View NCP511-D_5890167.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

? semiconductor components industries, llc, 2002 may, 2002 rev. 5 1 publication order number: ncp511/d ncp511 150 ma cmos low iq low-dropout voltage regulator the ncp511 series of fixed output low dropout linear regulators are designed for handheld communication equipment and portable battery powered applications which require low quiescent current. the ncp511 series features an ultralow quiescent current of 40 a. each device contains a voltage reference unit, an error amplifier, a pmos power transistor, resistors for setting output voltage, current limit, and temperature limit protection circuits. the ncp511 has been designed to be used with low cost ceramic capacitors and requires a minimum output capacitor of 1.0 f. the device is housed in the microminiature tsop5 surface mount package. standard voltage versions are 1.5, 1.8, 2.7, 2.8, 3.0, 3.3, and 5.0 v. other voltages are available in 100 mv steps. features ? low quiescent current of 40 a typical ? low dropout voltage of 100 mv at 100 ma ? excellent line and load regulation ? maximum operating voltage of 6.0 v ? low output voltage option ? high accuracy output voltage of 2.0% ? industrial temperature range of 40 c to 85 c typical applications ? cellular phones ? battery powered instruments ? handheld instruments ? camcorders and cameras driver w/ current limit v in v out thermal shutdown enable gnd off on 1 3 5 2 figure 1. representative block diagram this device contains 82 active transistors see detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ordering information tsop5 (sot235, sc595) sn suffix case 483 1 5 pin connections and marking diagram 1 3 n/c v in 2 gnd enable 4 v out 5 xxxyw xxx = version y = year w = work week (top view) http://onsemi.com
ncp511 http://onsemi.com 2 pin function description pin no. pin name description 1 vin positive power supply input voltage. 2 gnd power supply ground. 3 enable this input is used to place the device into lowpower standby. when this input is pulled low, the device is disabled. if this function is not used, enable should be connected to vin. 4 n/c no internal connection. 5 vout regulated output voltage. maximum ratings rating symbol value unit input voltage v in 0 to 6.0 v enable voltage enable 0.3 to v in +0.3 v output voltage v out 0.3 to v in +0.3 v power dissipation and thermal characteristics power dissipation thermal resistance, junction to ambient p d r ja internally limited 250 w c/w operating junction temperature t j +125 c operating ambient temperature t a 40 to +85 c storage temperature t stg 55 to +150 c 1. this device series contains esd protection and exceeds the following tests: human body model 2000 v per milstd883, method 3015 machine model method 200 v 2. latch up capability (85 c) 100 ma dc with trigger voltage.
ncp511 http://onsemi.com 3 electrical characteristics (v in = v out(nom.) + 1.0 v, v enable = v in , c in = 1.0 f, c out = 1.0 f, t j = 25 c, unless otherwise noted.) characteristic symbol min typ max unit output voltage (t a = 25 c, i out = 1.0 ma) 1.5 v 1.8 v 2.7 v 2.8 v 3.0 v 3.3 v 5.0 v v out 1.455 1.746 2.646 2.744 2.94 3.234 4.900 1.5 1.8 2.7 2.8 3.0 3.3 5.0 1.545 1.854 2.754 2.856 3.06 3.366 5.100 v output voltage (t a = 40 c to 85 c, i out = 1.0 ma) 1.5 v 1.8 v 2.7 v 2.8 v 3.0 v 3.3 v 5.0 v v out 1.455 1.746 2.619 2.716 2.910 3.201 4.900 1.5 1.8 2.7 2.8 3.0 3.3 5.0 1.545 1.854 2.781 2.884 3.09 3.399 5.100 v line regulation (i out = 10 ma) 1.5 v4.4 v (v in = v out(nom.) + 1.0 v to 6.0 v) 4.5 v5.0 v (v in = 5.5 v to 6.0 v) reg line 1.0 1.0 3.5 3.5 mv/v load regulation (i out = 1.0 ma to 150 ma) reg load 0.3 0.8 mv/ma output current (v out = (v out at i out = 150 ma) 3%) 1.5 v1.8 v (v in = 4.0 v) 1.9 v3.0 v (v in = 5.0 v) 3.1 v5.0 v (v in = 6.0 v) i out(nom.) 150 150 150 ma dropout voltage (i out = 100 ma, measured at v out 3.0%) 1.5 v 1.8 v 2.7 v 2.8 v 3.0 v 3.3 v 5.0 v v in v out 245 160 100 100 100 90 75 350 200 200 200 200 200 200 mv quiescent current (enable input = 0 v) (enable input = v in , i out = 1.0 ma to i o(nom.) ) i q 0.1 40 1.0 100 a output voltage temperature coefficient t c 100 ppm/ c enable input threshold voltage (voltage increasing, output turns on, logic high) (voltage decreasing, output turns off, logic low) v th(en) 1.3 0.3 v output short circuit current (v out = 0 v) 1.5 v1.8 v (v in = 4.0 v) 1.9 v3.0 v (v in = 5.0 v) 3.1 v5.0 v (v in = 6.0 v) i out(max) 200 200 200 400 400 400 800 800 800 ma ripple rejection (f = 1.0 khz, i o = 60 ma) rr 50 db output noise voltage (f = 20 hz to 100 khz, i out = 60 ma) v n 110 vrms 3. maximum package power dissipation limits must be observed. pd t j(max) t a r ja 4. low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
ncp511 http://onsemi.com 4 45 40 30 35 25 5 0 2.5 1.5 3.0 1.0 2.0 0 3.5 39 03 2 1 v in , input voltage (v) v out , output voltage (v) 50 50 45 35 50 25 0 40 30 25 20 25 75 100 125 temperature ( c) i out , output current (ma) ground pin current ( a) i q , quiescent current ( a) v in , input voltage (v) ground pin current ( a) 04 3 2 156 057 0 75 100 50 125 25 150 35 41 33 37 25 43 45 v out(nom.) = 3.0 v i out = 50 ma t a = 25 c 56 0.5 10 15 20 31 29 27 v in = v out(nom.) + 0.5 v v out(nom.) = 3.0 v i o = 0 ma 12 34 6 4 v out(nom.) = 3.0 v v in = 5.0 v t a = 25 c v out(nom.) = 3.0 v i o = 0 ma c in = 1.0 f c out = 1.0 f t a = 25 c v enable = v in 60 200 180 160 140 20 0 20 120 100 80 40 0 40 40 60 140 temperature ( c) dropout voltage (mv) 20 60 80 100 120 i out = 150 ma i out = 1 ma i out = 10 ma i out = 50 ma i out = 100 ma 350 200 current limit (ma) 0 450 v in , input voltage (v) 250 300 400 150 100 50 v out(nom.) = 3.0 v c in = 1.0 f figure 2. dropout voltage vs. temperature figure 3. output voltage vs. input voltage figure 4. quiescent current vs. temperature figure 5. ground pin current vs. output current figure 6. ground pin current vs. input voltage figure 7. current limit vs. input voltage v out(nom.) = 3.0 v
ncp511 http://onsemi.com 5 60 figure 8. line transient response time ( s) 100 500 600 400 300 700 200 900 0 3 20 40 40 4 20 800 v in , input voltage (v) v in = 3.5 v to 4.5 v v out = 3.0 v c out = 1 f i out = 1 ma 5 output voltage deviation (mv) 150 3 4 5 50 50 100 0 v in , input voltage (v) 4 figure 9. line transient response figure 10. line transient response time ( s) time ( s) 0 3 5 20 100 120 80 60 140 40 180 160 20 100 120 80 60 140 40 180 160 v in , input voltage (v) v in = 3.5 v to 4.5 v v out = 3.0 v c out = 1 f i out = 100 ma c out = 1 f i out = 150 ma 100 v in = 3.5 v to 4.5 v v out = 3.0 v 200 output voltage deviation (mv) output voltage deviation (mv) 50 100 150 i out , output current (ma) 0 100 200 10 1000 400 200 time ( s) figure 11. load transient response figure 12. load transient response 10 0 20 1200 1800 600 800 1400 1600 1000 400 200 1200 1800 600 800 1400 1600 0 150 i out , output current (ma) v in = 3.5 v v out = 3.0 v c in = 1 f c out = 1 f i o = 1 ma to 150 ma v in = 3.5 v v out = 3.0 v c in = 1 f c out = 10 f i out = 1 ma to 150 ma output voltage deviation (mv) 150 0 output voltage deviation (mv) 100 200 time ( s) 50 100
ncp511 http://onsemi.com 6 2 0 1 4 0 figure 13. turnon response time ( s) 3 20 100 120 80 60 140 40 180 160 v out , output voltage (v) enable voltage (v) v in = 3.5 v v out = 3.0 v t a = 25 c i out = 1 ma c in = 1 f c out = 1 f c out = 10 f 1 2 1.2 0.4 figure 14. output noise density f, frequency (khz) 0.2 0.6 1.0 1.4 0.01 10 100 1.0 0.1 1000 v out = 1.5 v v in = 2.5 v i out = 60 ma c out = 2.2 f output noise density ( v/ hz) 0 0.8 1.6 60 20 figure 15. ripple rejection vs. frequency f, frequency (hz) 10 30 50 70 100 100 k 1 m 10 k 1 k v out = 3.0 v v in = 3.5 v dc 0.25 v i out = 60 ma c out = 1.0 f rr, ripple rejection (db) 0 40
ncp511 http://onsemi.com 7 definitions load regulation the change in output voltage for a change in output current at a constant temperature. dropout voltage the input/output differential at which the regulator output no longer maintains regulation against further reductions in input voltage. measured when the output drops 3.0% below its nominal. the junction temperature, load current, and minimum input supply requirements affect the dropout level. maximum power dissipation the maximum total dissipation for which the regulator will operate within its specifications. quiescent current the quiescent current is the current which flows through the ground when the ldo operates without a load on its output: internal ic operation, bias, etc. when the ldo becomes loaded, this term is called the ground current. it is actually the difference between the input current (measured through the ldo input pin) and the output current. line regulation the change in output voltage for a change in input voltage. the measurement is made under conditions of low dissipation or by using pulse technique such that the average chip temperature is not significantly affected. line transient response typical over and undershoot response when input voltage is excited with a given slope. thermal protection internal thermal shutdown circuitry is provided to protect the integrated circuit in the event that the maximum junction temperature is exceeded. when activated at typically 160 c, the regulator turns off. this feature is provided to prevent failures from accidental overheating. maximum package power dissipation the maximum power package dissipation is the power dissipation level at which the junction temperature reaches its maximum operating value, i.e. 125 c. depending on the ambient power dissipation and thus the maximum available output current.
ncp511 http://onsemi.com 8 applications information a typical application circuit for the ncp511 series is shown in figure 16. input decoupling (c1) a 1.0 f capacitor either ceramic or tantalum is recommended and should be connected close to the ncp511 package. higher values and lower esr will improve the overall line transient response. output decoupling (c2) the ncp511 is a stable regulator and does not require any specific equivalent series resistance (esr) or a minimum output current. capacitors exhibiting esrs ranging from a few m up to 3.0 can thus safely be used. the minimum decoupling value is 1.0 f and can be augmented to fulfill stringent load transient requirements. the regulator accepts ceramic chip capacitors as well as tantalum devices. larger values improve noise rejection and load regulation transient response. enable operation the enable pin will turn on or off the regulator. these limits of threshold are covered in the electrical specification section of this data sheet. if the enable is not used then the pin should be connected to v in . hints please be sure the vin and gnd lines are suf ficiently wide. when the impedance of these lines is high, there is a chance to pick up noise or cause the regulator to malfunction. set external components, especially the output capacitor, as close as possible to the circuit, and make leads a short as possible. thermal as power across the ncp511 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 also the ambient temperature effect the rate of temperature rise for the part. this is stating that when the ncp511 has good thermal conductivity through the pcb, the junction temperature will be relatively low with high power dissipation applications. the maximum dissipation the package can handle is given by: pd t j(max) t a r ja if junction temperature is not allowed above the maximum 125 c, then the ncp511 can dissipate up to 400 mw @ 25 c. the power dissipated by the ncp511 can be calculated from the following equation: p tot [ v in *i gnd (i out ) ] [ v in v out ] *i out or v inmax p tot v out * i out i gnd i out if a 150 ma output current is needed then the ground current from the data sheet is 40 a. for an ncp51 1sn30t1 (3.0 v), the maximum input voltage will then be 5.6 v. figure 16. typical application circuit vout battery or unregulated voltage c1 c2 off on 1 2 3 5 4 + + 1 10 0.1 0.01 100 i o , output current (ma) figure 17. output capacitor vs. output current esr, output capacitor ( ) 0 150 25 50 75 100 125 c out = 1 f to 10 f t a = 25 c to 125 c v in = up to 6.0 v unstable stable
ncp511 http://onsemi.com 9 0 3 100 2 120 40 16 0 time (ms) v out, output voltage (v) 2 1 20 4 1 0 140 80 60 0 enable voltage (v) t a = 25 c v in = 3.5 v v out = 3.0 v r = 1.0 m c = 1.0 f r = 1.0 m c = 0.1 f no delay 3 output r 1 2 3 5 4 input 1.0 f 1.0 f output 1 2 3 5 4 input 1.0 f 1.0 f q2 q1 r3 r1 r2 output 1 2 3 5 4 input 1.0 f 1.0 f output 1 2 3 5 4 enable 1.0 f 1.0 f c output 1 2 3 5 4 input 1.0 f 1.0 f q1 r 5.6 v 0 100 120 40 16 0 time (ms) 20 140 80 60 r = 1.0 m c = 1.0 f r = 1.0 mw c = 0.1 f no delay figure 18. current boost regulator figure 19. current boost regulator with short circuit limit figure 20. delayed turnon figure 21. delayed turnon figure 22. input voltages greater than 6.0 v the ncp511 series can be current boosted with a pnp transis- tor. resistor r in conjunction with v be of the pnp determines when the pass transistor begins conducting; this circuit is not short circuit proof. input/output differential voltage minimum is increased by v be of the pass resistor. short circuit current limit is essentially set by the v be of q2 and r1. i sc = ((v beq2 ib * r2) / r1) + i o(max) regulator if a delayed turnon is needed during power up of several volt- ages then the above schematic can be used. resistor r, and capacitor c, will delay the turnon of the bottom regulator. a few values were chosen and the resulting delay can be seen in figure 21. the graph shows the delay between the enable signal and output turnon for various resistor and capacitor values. a regulated output can be achieved with input voltages that exceed the 6.0 v maximum rating of the ncp511 series with the addition of a simple preregulator circuit. care must be taken to prevent q1 from overheating when the regulated output (v out ) is shorted to g nd. q1 r application circuits
ncp511 http://onsemi.com 10 minimum recommended footprint for surface mounted applications surface mount board layout is a critical portion of the total design. the footprint for the semiconductor packages must be the correct size to insure proper solder connection interface between the board and the package. with the correct pad geometry, the packages will self align when subjected to a solder reflow process. inches mm 0.028 0.7 0.074 1.9 0.037 0.95 0.037 0.95 0.094 2.4 0.039 1.0 tsop5 (footprint compatible with sot235)
ncp511 http://onsemi.com 11 ordering information device nominal output voltage marking package shipping ncp511sn15t1 1.5 lbu ncp511sn18t1 1.8 lbv ncp511sn27t1 2.7 lbx ncp511sn28t1 2.8 lby tsop5 3000 units/ ncp511sn30t1 3.0 lbz tsop 5 3000 units/ 7 tape & reel ncp511sn31t1 3.1 lfg 7 ta e & reel ncp511sn33t1 3.3 lca ncp511sn50t1 5.0 lcb additional voltages in 100 mv steps are available upon request by contacting your on semiconductor representative.
ncp511 http://onsemi.com 12 package dimensions tsop5 (sot235, sc595) sn suffix plastic package case 48301 issue b notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. maximum lead thickness includes lead finish thickness. minimum lead thickness is the minimum thickness of base material. dim min max min max inches millimeters a 2.90 3.10 0.1142 0.1220 b 1.30 1.70 0.0512 0.0669 c 0.90 1.10 0.0354 0.0433 d 0.25 0.50 0.0098 0.0197 g 0.85 1.05 0.0335 0.0413 h 0.013 0.100 0.0005 0.0040 j 0.10 0.26 0.0040 0.0102 k 0.20 0.60 0.0079 0.0236 l 1.25 1.55 0.0493 0.0610 m 0 10 0 10 s 2.50 3.00 0.0985 0.1181 0.05 (0.002) 123 54 s a g l b d h c k m j 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 any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso 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 indem nify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized u se, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employ er. publication ordering information japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. ncp511/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com n. american technical support : 8002829855 toll free usa/canada

▲Up To Search▲

Price & Availability of NCP511-D

	To Download NCP511-D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .