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? semiconductor components industries, llc, 2012 may, 2012 ? rev. 0 1 publication order number: ncv8702/d ncv8702 200 ma, ultra-low quiescent current, ultra-low noise, ldo linear voltage regulator the ncv8702 is a low noise, low power consumption and low dropout linear voltage regulator. with its excellent noise and psrr specifications, the device is ideal for use in products utilizing rf receivers, imaging sensors, audio processors or any component requiring an extremely clean power supply. the ncv8702 uses an innovative adaptive ground current circuit to ensure ultra low ground current during light load conditions. features ? operating input voltage range: 2.0 v to 5.5 v ? available in fixed voltage options: 0.8 to 3.5 v in 2.5 mv steps contact factory for other voltage options ? ultra ? low quiescent current of typ. 10 a ? ultra ? low noise: 11 v rms from 100 hz to 100 khz ? very low dropout: 140 mv typical at 200 ma ? 2% accuracy over full load/line/temperature ? high psrr: 68 db at 1 khz ? thermal shutdown and current limit protections ? internal soft ? start to limit the turn ? on inrush current ? stable with a 1 f ceramic output capacitor ? available in tsop ? 5 and xdfn 1.5 x 1.5 mm package ? active output discharge for fast output turn ? off ? these devices are pb ? free and are rohs compliant ? ncv prefix for automotive and other applications requiring unique site and control change requirements; aec ? q100 qualified and ppap capable typical applications ? satellite radio receivers, gps ? rear view camera, electronic mirrors, lane change detectors ? portable entertainment systems ? other battery powered applications figure 1. typical application schematic in en out gnd ncv8702 1 f 1 f c out v out c in v in http://onsemi.com see detailed ordering and shipping information in the package dimensions section on page 18 of this data sheet. ordering information tsop ? 5 sn suffix case 483 1 5 x, xxx = specific device code m = date code a = assembly location y = year w = work week = pb ? free package 1 5 xxxayw marking diagrams xdfn ? 6 mx suffix case 711ae x m 1 1 pin connections 5 ? pin tsop ? 5 (top view) 6 ? pin xdfn 1.5 x 1.5 mm (top view) out n/c n/c in en gnd in en n/c out gnd 1 1
ncv8702 http://onsemi.com 2 figure 2. simplified schematic block diagram in out active discharge thermal shutdown uvlo enable logic gnd en en bandgap reference mosfet driver with current limit auto low power mode integrated soft ? start eeprom ? + table 1. pin function description pin no. xdfn 6 pin no. tsop ? 5 pin name description 1 5 out regulated output voltage pin. a small 1 f ceramic capacitor is needed from this pin to ground to assure stability. 2 4 n/c not connected. this pin can be tied to ground to improve thermal dissipation. 3 2 gnd power supply ground. 4 3 en driving en over 0.9 v turns on the regulator. driving en below 0.4 v puts the regulator into shutdown mode. 5 n/c not connected. this pin can be tied to ground to improve thermal dissipation. 6 1 in input pin. it is recommended to connect a 1 f ceramic capacitor close to the device pin. table 2. absolute maximum ratings rating symbol value unit input voltage (note 1) v in ? 0.3 v to 6 v v output voltage v out ? 0.3 v to v in + 0.3 v v enable input v en ? 0.3 v to v in + 0.3 v v output short circuit duration t sc indefinite s maximum junction temperature t j(max) 125 c storage temperature t stg ? 55 to 150 c esd capability, human body model (note 2) esd hbm 2000 v esd capability, machine model (note 2) esd mm 200 v stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. 1. refer to electrical characteristics and application information for safe operating area. 2. this device series incorporates esd protection and is tested by the following methods: esd human body model tested per aec ? q100 ? 002 (eia/jesd22 ? a114) esd machine model tested per aec ? q100 ? 003 (eia/jesd22 ? a115) latchup current maximum rating tested per jedec standard: jesd78.
ncv8702 http://onsemi.com 3 table 3. thermal characteristics (note 3) rating symbol value unit thermal characteristics, tsop ? 5, thermal resistance, junction ? to ? air thermal characterization parameter, junction ? to ? lead (pin 2) ja ja 224 115 c/w thermal characteristics, xdfn6 1.5 x 1.5 mm thermal resistance, junction ? to ? air thermal characterization parameter, junction ? to ? board ja jb 149 81 c/w 3. single component mounted on 1 oz, fr4 pcb with 645 mm 2 cu area. table 4. electrical characteristics ? 40 c t j 125 c; v in = v out(nom) + 0.3 v or 2.0 v, whichever is greater; v en = 0.9 v, i out = 10 ma, c in = c out = 1 f. typical values are at t j = +25 c. min/max values are specified for t j = ? 40 c and t j = 125 c respectively. (note 4) parameter test conditions symbol min typ max unit operating input voltage v in 2.0 5.5 v undervoltage lock ? out v in rising uvlo 1.2 1.6 1.9 v output voltage accuracy v out + 0.3 v v in 5.5 v, i out = 0 ? 200 ma v out ? 2 +2 % line regulation v out + 0.3 v v in 4.5 v, i out = 10 ma reg line 290 v/v v out + 0.3 v v in 5.5 v, i out = 10 ma reg line 440 v/v load regulation i out = 0 ma to 200 ma reg load 13 v/ma dropout voltage (note 5) i out = 200 ma, v out(nom) = 2.5 v v do 140 200 mv output current limit v out = 90% v out(nom) i cl 220 385 550 ma quiescent current i out = 0 ma i q 10 16 a ground current i out = 2 ma i gnd 60 a i out = 200 ma i gnd 160 a shutdown current (note 6) v en 0.4 v i dis 0.005 a v en 0.4 v, v in = 4.5 v i dis 0.01 1 a en pin threshold voltage high threshold low threshold v en voltage increasing v en voltage decreasing v en_hi v en_lo 0.9 0.4 v en pin input current v en = v in = 5.5 v i en 110 500 na turn ? on time (note 7) c out = 1.0 f, i out = 1 ma t on 300 s output voltage overshoot on start ? up (note 8) v en = 0 v to 0.9 v, 0 i out 200 ma v out 2 % load transient i out = 1 ma to 200 ma or i out = 200 ma to 1 ma in 10 s, c out = 1 f v out ? 30/+30 mv power supply rejection ratio v in = 3 v, v out = 2.5 v i out = 150 ma f = 100 hz f = 1 khz f = 10 khz psrr 70 68 53 db output noise voltage v out = 2.5 v, v in = 3 v, i out = 200 ma f = 100 hz to 100 khz v n 11 v rms active discharge resistance v en < 0.4 v r dis 1 k thermal shutdown temperature temperature increasing from t j = +25 c t sd 160 c thermal shutdown hysteresis temperature falling from t sd t sdh ? 20 ? c 4. performance guaranteed over the indicated operating temperature range by design and/or characterization. production tested at t j = t a = 25 c. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible . 5. characterized when v out falls 100 mv below the regulated voltage at v in = v out(nom) + 0.3 v. 6. shutdown current is the current flowing into the in pin when the device is in the disable state. 7. turn ? on time is measured from the assertion of en pin to the point when the output voltage reaches 0.98 v out(nom) 8. guaranteed by design.
ncv8702 http://onsemi.com 4 typical characteristics figure 3. output voltage noise spectral density for v out = 0.8 v, c out = 1 f frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0.001 0.01 0.1 1 10 figure 4. output voltage noise spectral density for v out = 0.8 v, c out = 4.7 f figure 5. output voltage noise spectral density for v out = 0.8 v, c out = 10 f output voltage noise ( v/rthz) v in = 2.0 v v out = 0.8 v c in = c out = 1 f mlcc, x5r, 0402 size i out = 1 ma i out = 10 ma i out = 200 ma 1 ma 21.74 21.17 10 ma 14.62 14.07 200 ma 10.74 10.02 10 hz ? 100 khz 100 hz ? 100 khz rms output noise i out frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0.001 0.01 0.1 1 10 output voltage noise ( v/rthz) v in = 2.0 v v out = 0.8 v c in = c out = 4.7 f mlcc, x7r, 1206 size i out = 1 ma i out = 10 ma i out = 200 ma 1 ma 14.16 13.43 10 ma 14.20 13.70 200 ma 10.99 10.48 10 hz ? 100 khz 100 hz ? 100 khz rms output noise i out frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0.001 0.01 0.1 1 10 output voltage noise ( v/rthz) v in = 2.0 v v out = 0.8 v c in = c out = 10 f mlcc, x7r, 1206 size i out = 1 ma i out = 10 ma i out = 200 ma 1 ma 12.94 12.11 10 ma 12.78 12.25 200 ma 11.33 10.83 10 hz ? 100 khz 100 hz ? 100 khz rms output noise i out
ncv8702 http://onsemi.com 5 typical characteristics figure 6. output voltage noise spectral density for v out = 3.3 v, c out = 1 f frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0.001 0.01 0.1 1 10 figure 7. output voltage noise spectral density for v out = 3.3 v, c out = 4.7 f figure 8. output voltage noise spectral density for v out = 3.3 v, c out = 10 f output voltage noise ( v/rthz) v in = 3.8 v v out = 3.3 v c in = c out = 1 f mlcc, x5r, 0402 size i out = 1 ma i out = 10 ma i out = 200 ma 1 ma 20.28 17.87 10 ma 16.73 13.90 200 ma 13.70 10.21 10 hz ? 100 khz 100 hz ? 100 khz rms output noise i out frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0.001 0.01 0.1 1 10 output voltage noise ( v/rthz) v in = 3.8 v v out = 3.3 v c in = c out = 4.7 f mlcc, x7r, 1202 size i out = 1 ma i out = 10 ma i out = 200 ma 1 ma 15.76 11.82 10 ma 17.09 13.88 200 ma 14.51 11.47 10 hz ? 100 khz 100 hz ? 100 khz rms output noise i out frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0.001 0.01 0.1 1 10 output voltage noise ( v/rthz) v in = 3.8 v v out = 3.3 v c in = c out = 10 f mlcc, x7r, 1206 size i out = 1 ma i out = 10 ma i out = 200 ma 1 ma 14.87 10.57 10 ma 16.00 12.65 200 ma 14.89 11.84 10 hz ? 100 khz 100 hz ? 100 khz rms output noise i out
ncv8702 http://onsemi.com 6 typical characteristics figure 9. power supply rejection ratio, v out = 0.8 v, c out = 1 f figure 10. power supply rejection ratio, v out = 0.8 v, c out = 4.7 f frequency (hz) frequency (hz) 10 m 1 m 100 k 10 k 1 k 100 10 0 10 20 40 60 70 90 100 figure 11. power supply rejection ratio, v out = 3.3 v, c out = 1 f figure 12. power supply rejection ratio, v out = 3.3 v, c out = 4.7 f frequency (hz) frequency (hz) figure 13. power supply rejection ratio, v out = 3.3 v, c out = 10 f figure 14. psrr vs. voltage differential, c out = 4.7 f, i out = 200 ma frequency (hz) v in ? v out voltage differential (v) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 10 30 40 50 60 80 90 psrr (db) psrr (db) psrr (db) psrr (db) psrr (db) psrr (db) 20 70 v out = 3.3 v c out = 4.7 f c in = none f = 100 hz f = 1 khz f = 100 khz f = 1 mhz f = 10 khz i out = 200 ma mlcc, x7r, 1206 size 30 50 80 v in = 2.0 v v out = 0.8 v c out = 1 f c in = none mlcc, x5r, 0402 size 10 m 1 m 100 k 10 k 1 k 100 10 0 10 20 40 60 70 90 100 30 50 80 10 m 1 m 100 k 10 k 1 k 100 10 0 10 20 40 60 70 90 100 30 50 80 v in = 3.8 v v out = 3.3 v c out = 10 f c in = none mlcc, x7r, 1206 size 10 m 1 m 100 k 10 k 1 k 100 10 0 10 20 40 60 70 90 30 50 80 v in = 3.8 v v out = 3.3 v c out = 4.7 f c in = none mlcc, x7r, 1206 size 10 m 1 m 100 k 10 k 1 k 100 10 0 10 20 40 60 70 90 110 30 50 80 100 i out = 1 ma i out = 10 ma i out = 50 ma i out = 150 ma i out = 200 ma i out = 1 ma i out = 10 ma i out = 50 ma i out = 150 ma i out = 200 ma i out = 1 ma i out = 10 ma i out = 50 ma i out = 150 ma i out = 200 ma i out = 1 ma i out = 10 ma i out = 50 ma i out = 150 ma i out = 200 ma i out = 1 ma i out = 10 ma i out = 50 ma i out = 150 ma i out = 200 ma v in = 3.8 v v out = 3.3 v c out = 1 f c in = none mlcc, x5r, 0402 size v in = 2.0 v v out = 0.8 v c out = 4.7 f c in = none mlcc, x7r, 1206 size
ncv8702 http://onsemi.com 7 typical characteristics figure 15. psrr vs. voltage differential, c out = 4.7 f, i out = 10 ma figure 16. quiescent current vs. input voltage, v out = 3.3 v v in ? v out voltage differential (v) v in , input voltage (v) 1.4 1.2 1.0 0.8 0.6 0.2 0.4 0 0 10 20 30 50 60 70 80 5.5 4.0 3.5 3.0 2.0 1.0 0.5 0 0 2 4 6 8 10 12 figure 17. quiescent current vs. input voltage, v out = 0.8 v figure 18. dropout voltage vs. output current, v out = 3.3 v v in , input voltage (v) i out , output current (ma) 180 140 100 80 60 40 20 0 0 20 40 60 80 100 120 140 figure 19. dropout voltage vs. output current, v out = 2.5 v figure 20. output voltage vs. temperature, v out = 0.8 v i out , output current (ma) t j , junction temperature ( c) 180 140 120 100 60 40 20 0 0 20 60 80 100 140 180 200 120 100 80 40 20 0 ? 20 ? 40 0.781 0.785 0.789 0.797 0.801 0.805 0.813 0.817 psrr (db) i q , quiescent current ( a) i q , quiescent current ( a) v drop , dropout voltage (mv) v drop , dropout voltage (mv) v out , output voltage (v) 40 f = 1 khz f = 100 khz f = 1 mhz f = 10 khz v out = 3.3 v c out = 4.7 f c in = none i out = 10 ma mlcc, x7r, 1206 size 1.5 2.5 4.5 5.0 t j = 25 c t j = ? 40 c t j = 125 c v out = 3.3 v i out = 0 ma c out = 1 f t j = 25 c t j = ? 40 c t j = 125 c v out = 0.8 v i out = 0 ma c out = 1 f 120 160 200 t j = 25 c t j = ? 40 c t j = 125 c v out(nom) = 3.3 v c in = c out = 1 f 80 160 200 40 120 160 t j = 25 c t j = ? 40 c t j = 125 c v out(nom) = 2.5 v c in = c out = 1 f 60 140 0.793 0.809 v in = 2.0 v v out(nom) = 0.8 v i out = 10 ma c out = c out = 1 f 0 2 4 6 8 10 12 0123456
ncv8702 http://onsemi.com 8 typical characteristics figure 21. output voltage vs. temperature, v out = 1.8 v figure 22. output voltage vs. temperature, v out = 3.3 v t j , junction temperature ( c) t j , junction temperature ( c) 120 100 80 40 20 0 ? 20 ? 40 1.780 1.784 1.788 1.796 1.800 1.808 1.812 1.816 figure 23. load regulation vs. temperature, v out = 0.8 v figure 24. load regulation vs. temperature, v out = 1.8 v t j , junction temperature ( c) t j , junction temperature ( c) 120 100 80 40 20 0 ? 20 ? 40 0 1 2 4 6 7 9 10 figure 25. load regulation vs. temperature, v out = 3.3 v figure 26. line regulation vs. temperature, v out = 0.8 v t j , junction temperature ( c) t j , junction temperature ( c) v out , output voltage (v) v out , output voltage (v) reg load , load regulation (mv) reg line , line regulation ( v/v) 60 140 1.792 1.804 v in = 2.1 v v out = 1.8 v i out = 10 ma c out = c out = 1 f 120 100 80 40 20 0 ? 20 ? 40 3.285 3.289 3.293 3.301 3.309 3.313 60 140 3.297 3.305 v in = 3.8 v v out = 3.3 v i out = 10 ma c out = c out = 1 f 3.317 60 140 3 5 8 v in = 2.0 v v out = 0.8 v i out = 0 ma ? 200 ma c out = c out = 1 f 120 100 80 40 20 0 ? 20 ? 40 0 1 2 4 6 7 9 10 reg load , load regulation (mv) 60 140 3 5 8 v in = 2.1 v v out = 1.8 v i out = 0 ma ? 200 ma c out = c out = 1 f 120 100 80 40 20 0 ? 20 ? 40 0 1 2 4 6 7 9 10 reg load , load regulation (mv) 60 140 3 5 8 v in = 3.6 v v out = 3.3 v i out = 0 ma ? 200 ma c out = c out = 1 f 120 100 80 40 20 0 ? 20 ? 40 0 100 200 400 600 700 900 1000 60 140 300 500 800 v out = 0.8 v i out = 10 ma c out = c out = 1 f v in = 2.0 v ? 5.5 v v in = 2.0 v ? 4.5 v
ncv8702 http://onsemi.com 9 typical characteristics figure 27. line regulation vs. temperature, v out = 1.8 v figure 28. line regulation vs. temperature, v out = 3.3 v t j , junction temperature ( c) t j , junction temperature ( c) 120 100 60 40 20 0 ? 20 ? 40 0 100 300 400 600 700 900 1000 figure 29. disable current vs. temperature, v out = 1.8 v figure 30. disable current vs. temperature, v out = 3.3 v t j , junction temperature ( c) t j , junction temperature ( c) 120 100 80 40 20 0 ? 20 ? 40 ? 0.05 0 0.10 0.15 0.25 0.35 0.45 0.50 figure 31. disable current vs. temperature, v out = 0.8 v figure 32. output current limit vs. temperature, v out = 0.8 v t j , junction temperature ( c) t j , junction temperature ( c) reg line , line regulation ( v/v) i dis , disable current ( a) i dis , disable current ( a) i out , output current (ma) 80 140 200 500 800 v in = v en = 2 v v out(nom) = 0.8 v c in = c out = 1 f output short circuit v out = 0 v output current limit v out = v out(nom) ? 0.1 v v out = 1.8 v i out = 10 ma c out = c out = 1 f v in = 2.1 v ? 5.5 v v in = 2.1 v ? 4.5 v 120 100 60 40 20 0 ? 20 ? 40 0 100 300 400 600 700 900 1000 reg line , line regulation ( v/v) 80 140 200 500 800 v out = 3.3 v i out = 10 ma c out = c out = 1 f v in = 3.6 v ? 5.5 v v in = 3.6 v ? 4.5 v 60 140 0.05 0.20 0.30 0.40 v in = 5.5 v v out = 1.8 v v en = 0 v c out = c out = 1 f 120 100 80 40 20 0 ? 20 ? 40 ? 0.05 0 0.10 0.15 0.25 0.35 0.45 0.50 i dis , disable current ( a) 60 140 0.05 0.20 0.30 0.40 v in = 5.5 v v out = 3.3 v v en = 0 v c out = c out = 1 f 120 100 80 40 20 0 ? 20 ? 40 ? 0.05 0 0.10 0.15 0.25 0.35 0.45 0.50 60 140 0.05 0.20 0.30 0.40 v in = 5.5 v v out = 0.8 v v en = 0 v c out = c out = 1 f 250 270 290 310 330 350 370 390 410 430 450 ? 40 ? 20 0 20 40 60 80 100 120 140
ncv8702 http://onsemi.com 10 typical characteristics figure 33. output current limit vs. temperature, v out = 3.3 v figure 34. enable low threshold voltage t j , junction temperature ( c) t j , junction temperature ( c) figure 35. enable high threshold voltage figure 36. enable turn ? on response, v out = 3.3 v, c out = 1 f t j , junction temperature ( c) 120 100 60 40 20 0 ? 20 ? 40 0.2 0.3 0.4 0.5 0.7 0.8 0.9 1.0 figure 37. enable turn ? on response, v out = 3.3 v, c out = 3 f figure 38. enable turn ? on response, v out = 0.8 v, c out = 1 f i out , output current (ma) v en_hi , en high threshold (v) 80 140 0.6 120 100 60 40 20 0 ? 20 ? 40 0.2 0.3 0.4 0.5 0.7 0.8 0.9 1.0 v en_low , en low threshold (v) 80 140 0.6 v out(nom) = 3.3 v v in = 3.6 v i out = 10 ma c out = c out = 1 f v out(nom) = 3.3 v v in = 3.6 v i out = 10 ma c out = c out = 1 f v in = v en = 3.6 v v out(nom) = 3.3 v c in = c out = 1 f output short circuit v out = 0 v output current limit v out = v out(nom) ? 0.1 v 290 310 330 350 370 390 410 430 450 470 490 ? 40 ? 20 0 20 40 60 80 100 120 140 v in = 3.6 v v out(nom) = 3.3 v c out = 1 f c in = none i out = 1 ma t a = 25 c out en i inrush i inrush = 60 ma 100 s/div 1 v/div 1 v/div 50 ma/div i inrush = 115 ma v in = 3.6 v v out(nom) = 3.3 v c out = 3 f c in = none i out = 1 ma t a = 25 c out en i inrush 1 v/div 1 v/div 50 ma/div 0.5 v/div 1 v/div v in = 2.0 v v out(nom) = 0.8 v c out = 1 f c in = none i out = 1 ma t a = 25 c 50 ma/div 100 s/div i inrush = 20 ma 100 s/div
ncv8702 http://onsemi.com 11 typical characteristics figure 39. enable turn ? on response, v out = 0.8 v, c out = 3 f 0.5 v/div 1 v/div v in = 2.0 v v out(nom) = 0.8 v c out = 3 f c in = none i out = 1 ma t a = 25 c 50 ma/div i inrush = 45 ma 100 s/div 0 40 80 120 160 200 1 1.5 2 2.5 3 3.5 4 4.5 5 c out , output capacitance ( f) i inrush , inrush current (ma) figure 40. turn ? on inrush current vs. output capacitance v in = v out + 0.3 v or 2 v whichever is greater v en = 0 v to 1 v c in = none, t j = 25 c i out = 1 ma v out = 3.3 v v out = 0.8 v figure 41. enable turn ? off response, v out = 3.3 v, c out = 1 f figure 42. enable turn ? off response, v out = 3.3 v, c out = 4.7 f figure 43. enable turn ? off response, v out = 3.3 v, c out = 10 f figure 44. slow input voltage turn ? on/turn ? off, v out = 3.3 v
ncv8702 http://onsemi.com 12 typical characteristics figure 45. line transient response ? rising edge, v out = 3.3 v figure 46. line transient response ? falling edge, v out = 3.3 v figure 47. load transient response ? rising edge, i out = 1 ma ? 200 ma, v out = 0.8 v figure 48. load transient response ? falling edge, i out = 1 ma ? 200 ma, v out = 0.8 v figure 49. load transient response ? rising edge, i out = 1 ma ? 200 ma, c out = 1.0 f figure 50. load transient response ? falling edge, i out = 1 ma ? 200 ma, c out = 1.0 f
ncv8702 http://onsemi.com 13 typical characteristics figure 51. load transient response ? rising edge, i out = 1 ma ? 200 ma, c out = 4.7 f figure 52. load transient response ? falling edge, i out = 1 ma ? 200 ma, c out = 4.7 f figure 53. load transient response ? rising edge, i out = 1 ma ? 200 ma, c out = 10 f figure 54. load transient response ? falling edge, i out = 1 ma ? 200 ma, c out = 10 f figure 55. output short circuit response figure 56. cycling between output short circuit and thermal shutdown
ncv8702 http://onsemi.com 14 typical characteristics figure 57. ground current vs. output current, i out = 0 ma to 5 ma figure 58. ground current vs. output current, i out = 0 ma to 200 ma i out , output current (ma) i out , output current (ma) 160 140 120 100 60 40 20 0 0 20 40 60 100 120 160 180 i gnd , ground current ( a) i gnd , ground current ( a) v in = 3.6 v v out = 3.3 v c in = c out = 1 f mlcc, x7r, 1206 size t j = 25 c t j = ? 40 c t j = 125 c 80 180 200 80 140 v in = 3.6 v v out = 3.3 v c in = c out = 1 f mlcc, x7r, 1206 size t j = 25 c t j = ? 40 c t j = 125 c 0 10 20 30 40 50 60 70 80 00.511.522.533.544.5 figure 59. en pin input current vs. enable pin voltage figure 60. output capacitor esr vs. output current v en , enable voltage (v) i out , output current (ma) 4.5 4.0 3.5 2.5 2.0 1.0 0.5 0 0 0.02 0.04 0.06 0.08 0.10 0.12 180 140 100 80 60 40 20 0 0.001 0.01 0.1 1 10 i en , en pin input current ( a) esr ( ) 120 160 200 1.5 3.0 5.0 5.5 v in = 5.5 v v out = 1.8 v i out = 10 ma t j = 25 c c in = c out = 1 f v in = v out(nom) + 0.3 v or 2 v c out = c in = 1 f t a = 25 c unstable operation stable operation v out = 0.8 v v out = 3.3 v
ncv8702 http://onsemi.com 15 applications information general the ncv8702 is a high performance 200 ma low dropout linear regulator. this device delivers excellent noise and dynamic performance. thanks to its adaptive ground current feature the device consumes only 10 a of quiescent current at no ? load condition. the regulator features ultra ? low noise of 11 v rms , psrr of 68 db at 1 khz and very good load/line transient performance. such excellent dynamic parameters and small package size make the device an ideal choice for powering the precision analog and noise sensitive circuitry in portable applications. the ldo achieves this ultra low noise level output without the need for a noise bypass capacitor. a logic en input provides on/off control of the output voltage. when the en is low the device consumes as low as typ. 10 na from the in pin. the ldo achieves ultra ? low output voltage noise without the need for additional noise bypass capacitor. the device is fully protected in case of output overload, output short circuit condition and overheating, assuring a very robust design. input capacitor selection (c in ) it is recommended to connect a minimum of 1 f ceramic x5r or x7r capacitor close to the in pin of the device. this capacitor will provide a low impedance path for unwanted ac signals or noise modulated onto constant input voltage. there is no requirement for the min./max. esr of the input capacitor but it is recommended to use ceramic capacitors for their low esr and esl. a good input capacitor will limit the influence of input trace inductance and source resistance during sudden load current changes. larger input capacitor may be necessary if fast and large load transients are encountered in the application. output decoupling (c out ) the ncv8702 is designed to be stable with a small 1.0 f ceramic capacitor on the output. to assure proper operation it is strongly recommended to use min. 1.0 f capacitor with the initial tolerance of 10%, made of x7r or x5r dielectric material types. there is no requirement for the minimum value of equivalent series resistance (esr) for the c out but the maximum value of esr should be less than 700 m . larger output capacitors could be used to improve the load transient response or high frequency psrr as shown in typical characteristics. the initial tolerance requirements can be wider than 10% when using capacitors larger than 1 f. it is not recommended to use tantalum capacitors on the output due to their large esr. the equivalent series resistance of tantalum capacitors is also strongly dependent on the temperature, increasing at low temperature. the tantalum capacitors are generally more costly than ceramic capacitors. the table on this page lists the capacitors which were used during the ic evaluation. no ? load operation the regulator remains stable and regulates the output voltage properly within the 2% tolerance limits even with no external load applied to the output. in en out gnd c2 c1 ncv8702 2 v ... 5.5 v 0 ma ... 200 ma u1 figure 61. typical applications schematics v out v in list of recommended capacitors: symbol manufacturer part number description c1, c2 kemet c0402c105k8pactu 1 f ceramic 10%, 10 v, 0402, x5r tdk c1005x5r1a105k ? || ? murata GRM155R61A105KE15D ? || ? avx 0402zd105kat2a ? || ? multicomp mcca000571 1 f ceramic 10%, 50 v, 1206, x7r panason ? ecg ecj ? 0eb0j475m 4.7 f ceramic 20%, 6.3 v, 0402, x5r
ncv8702 http://onsemi.com 16 applications information enable operation the ncv8702 uses the en pin to enable/disable its output and to deactivate/activate the active discharge function. if the en pin voltage is <0.4 v the device is guaranteed to be disabled. the pass transistor is turned ? off so that there is virtually no current flow between the in and out. the active discharge transistor is active so that the output voltage v out is pulled to gnd through a 1 k resistor. in the disable state the device consumes as low as typ. 10 na from the v in . if the en pin voltage >0.9 v the device is guaranteed to be enabled. the ncv8702 regulates the output voltage and the active discharge transistor is turned ? off. the en pin has internal pull ? down current source with typ. value of 110 na which assures that the device is turned ? off when the en pin is not connected. a build in 2 mv of hysteresis in the en prevents from periodic on/off oscillations that can occur due to noise. in the case where the en function isn?t required the en pin should be tied directly to in. undervoltage lockout the internal uvlo circuitry assures that the device becomes dis abled when the v in falls below typ. 1.5 v. when the v in voltage ramps ? up the ncv8702 becomes enabled, if v in rises above typ. 1. 6 v. the 100 mv hysteresis prevents on/off oscillations that can occur due to noise on v in line. reverse current the pmos pass transistor has an inherent body diode which will be forward biased in the case that v out > v in . due to this fact in cases where the extended reverse current condition is anticipated the device may require additional external protection. output current limit output current is internally limited within the ic to a typical 380 ma. the ncv8702 will source this amount of current measured with the output voltage 100 mv lower than the nominal v out . if the output voltage is directly shorted to ground (v out = 0 v), the short circuit protection will limit the output current to 390 ma (typ). the current limit and short circuit protection will work properly up to v in = 5.5 v at t a = 25 c. there is no limitation for the short circuit duration. thermal shutdown when the die temperature exceeds the thermal shutdown threshold (t sd ? 160 c typical), thermal shutdown event is detected and the device is disabled. the ic will remain in this state until the die temperature decreases below the thermal shutdown reset threshold (t sdu ? 140 c typical). once the ic temperature falls below the 140 c the ldo is enabled again. the thermal shutdown feature provides protection from a catastrophic device failure due to accidental overheating. this protection is not intended to be used as a substitute for proper heat sinking. power dissipation as power dissipated in the ncv8702 increases, it might become necessary to provide some thermal relief. the maximum power dissipation supported by the device is dependent upon board design and layout. mounting pad configuration on the pcb, the board material, and the ambient temperature affect the rate of junction temperature rise for the part. the maximum power dissipation the ncv8702 can handle is given by: p d(max) t j(max) t a ja (eq. 1) the power dissipated by the ncv8702 for given application conditions can be calculated from the following equations: p d v in i gnd @i out i out v in v out (eq. 2) figure 62. ja and p d(max) vs. copper area (tsop5) pcb copper area (mm 2 ) 600 500 400 700 300 200 100 0 150 170 190 230 250 270 310 330 ja , junction to ambient thermal resistance ( c/w) 210 290 0.20 0.25 0.30 0.40 0.45 0.50 0.60 0.65 0.35 0.55 p d(max) , maximum power dissipation (w) ja , 2 oz cu ja , 1 oz cu p d(max) , t a = 25 c, 1 oz cu p d(max) , t a = 25 c, 2 oz cu
ncv8702 http://onsemi.com 17 figure 63. ja and p d(max) vs. copper area (xdfn6) pcb copper area (mm 2 ) 600 500 400 800 300 200 100 0 50 100 200 250 350 400 ja , junction to ambient thermal resistance ( c/w) 150 300 0.1 0.2 0.3 0.5 0.7 0.8 0.4 0.6 p d(max) , maximum power dissipation (w) ja , 2 oz cu ja , 1 oz cu p d(max) , t a = 25 c, 1 oz cu p d(max) , t a = 25 c, 2 oz cu 700 load regulation the ncv8702 features very good load regulation of maximum 2.6 mv in the 0 ma to 200 ma range. in order to achieve this very good load regulation a special attention to pcb design is necessary. the trace resistance from the out pin to the point of load can easily approach 100 m which will cause a 20 mv voltage drop at full load current, deteriorating the excellent load regulation. line regulation the ic features very good line regulation of 0.44 mv/v measured from v in = v out + 0.3 v to 5.5 v. for battery operated applications it may be important that the line regulation from v in = v out + 0.3 v up to 4.5 v is only 0.29 mv/v. power supply rejection ratio the ncv8702 features very good power supply rejection ratio. if desired the psrr at higher frequencies in the range 100 khz ? 10 mhz can be tuned by the selection of c out capacitor and proper pcb layout. output noise the ic is designed for ultra ? low noise output voltage. figures 3 ? 8 illustrate the noise performance for different v out , i out , c out . generally the noise performance in the indicated frequency range improves with increasing output current, although even at i out = 1 ma the noise levels are below 22 v rms . turn ? on time the turn ? on time is defined as the time period from en assertion to the point in which v out will reach 98% of its nominal value. this time is dependent on v out(nom) , c out , t a . the turn ? on time temperature dependence is shown below: figure 64. turn ? on time vs. temperature t j , junction temperature ( c) en, turn ? on time ( s) v out = 0.8 v v out = 3.3 v v out = 1.8 v v in = v out + 0.3 v or 2 v i out = 10 ma c in = c out = 1 f v en = 0 v ? > 0.9 v 0 40 80 120 160 200 240 280 320 360 400 ? 40 ? 20 0 20 40 60 80 100 120 140 internal soft-start the internal soft ? start circuitry will limit the inrush current during the ldo turn-on phase. please refer to figure 43 for typical inrush current values for given output capacitance. the soft ? start function prevents from any output voltage overshoots and assures monotonic ramp-up of the output voltage. pcb layout recommendations to obtain good transient performance and good regulation characteristics place c in and c out capacitors close to the device pins and make the pcb traces wide. in order to minimize the solution size use 0402 capacitors. larger copper area connected to the pins will also improve the device thermal resistance. the actual power dissipation can be calculated by the formula given in equation 2.
ncv8702 http://onsemi.com 18 ordering information device voltage option marking package shipping ? ncv8702mx18tcg 1.8 v p xdfn6 3000 / tape & reel ncv8702mx28tcg 2.8 v 2 ncv8702mx30tcg 3.0 v 3 ncv8702mx33tcg 3.3 v 4 ncv8702sn18t1g 1.8 v a5j tsop-5 3000 / tape & reel ncv8702sn28t1g 2.8 v adv ncv8702sn30t1g 3.0 v a5r ncv8702sn33t1g 3.3 v a5t ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d.
ncv8702 http://onsemi.com 19 package dimensions notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimension b applies to plated terminal and is measured between 0.10 and 0.20mm from terminal tip. c a seating plane d e 0.10 c a3 a1 2x 2x 0.10 c xdfn6 1.5x1.5, 0.5p case 711ae issue o dim a min max millimeters 0.35 0.45 a1 0.00 0.05 a3 0.13 ref b 0.20 0.30 d e e l pin one reference 0.05 c 0.05 c a 0.10 c note 3 l2 e b b 3 6 6x 1 4 0.05 c mounting footprint* l1 1.50 bsc 1.50 bsc 0.50 bsc 0.40 0.60 --- 0.15 bottom view l 5x dimensions: millimeters 0.73 6x 0.35 5x 1.80 0.50 pitch *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. l1 detail a l alternate terminal constructions l2 0.50 0.70 top view b side view recommended 0.83 a
ncv8702 http://onsemi.com 20 package dimensions tsop ? 5 case 483 ? 02 issue h notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. maximum lead thickness includes lead finish thickness. minimum lead thickness is the minimum thickness of base material. 4. dimensions a and b do not include mold flash, protrusions, or gate burrs. 5. optional construction: an additional trimmed lead is allowed in this location. trimmed lead not to extend more than 0.2 from body. dim min max millimeters a 3.00 bsc b 1.50 bsc c 0.90 1.10 d 0.25 0.50 g 0.95 bsc h 0.01 0.10 j 0.10 0.26 k 0.20 0.60 l 1.25 1.55 m 0 10 s 2.50 3.00 123 54 s a g l b d h c j 0.7 0.028 1.0 0.039 mm inches scale 10:1 0.95 0.037 2.4 0.094 1.9 0.074 *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* 0.20 5x c ab t 0.10 2x 2x t 0.20 note 5 t seating plane 0.05 k m detail z detail z on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. ncv8702/d publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5817 ? 1050 literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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