rt9058 ? ds9058-00 april 2013 www.richtek.com 1 copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. ? 36v, 2 a i q , 100ma low dropout voltage linear regulator applications z portable, battery powered equipment z ultra low power microcontrollers z notebook computers features z z z z z 2 a quiescent current z z z z z 2% output accuracy z z z z z 100ma output current z z z z z 3.5v to 36v input voltage range z z z z z dropout voltage : 0.35v at 10ma/v cc 5v 0.5v at 10ma/v cc 3.5v z z z z z fixed output voltage : 2.5v, 3v, 3.3v, 5v, 6v, 9v, 12v z z z z z stable with ceramic or tantalum capacitors z z z z z current limit protection z z z z z over temperature protection z z z z z sot-23-3, sot-89-3 packages z z z z z rohs compliant and halogen free simplified application circuit general description the rt9058 is a low dropout (ldo) linear voltage regulator that features high input voltage, low dropout voltage, ultra- low operating current, and miniaturized packaging. with quiescent current as low as 2 a, the rt9058 is ideal for battery-powered equipment. the rt9058's stability requirements are easily met with all types of output capacitors, including tiny ceramic capacitors, over its wide input range (3.5v to 36v) and its load current range (0ma to 100ma). the rt9058 offers standard output voltages of 2.5v, 3v, 3.3v, 5v, 6v, 9v and 12v. pin configurations (top view) sot-23-3 vcc vout gnd 2 3 sot-23-3 (l-type) gnd vout vcc 2 3 sot-89-3 vcc gnd vout 23 pin no. sot-23-3 sot-23-3 (l-type) sot-89-3 pin name pin function 1 3 1 vcc supply voltage input. 2 2 3 vout output of the regulator. 3 1 2 gnd ground. functional pin description vcc gnd vout rt9058 v cc v out
rt9058 2 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. function block diagram operation the rt9058 is a high input voltage linear regulator specifically designed to minimize external components. the input voltage range is from 3.5v to 36v. output transistor the rt9058 includes a built-in low on-resistance p-mosfet output transistor for low dropout voltage applications. error amplifier the error amplifier compares the output feedback voltage from an internal feedback voltage divider to an internal reference voltage and controls the p-mosfet's gate voltage to maintain output voltage regulation. current limit protection the rt9058 provides a current limit function to prevent damage during output over-load or shorted-circuit conditions. the output current is detected by an internal sensing transistor. over temperature protection the over temperature protection function will turn off the p-mosfet when the internal junction temperature exceeds 150 c (typ.) and the output current exceeds 4ma. once the junction temperature cools down by approximately 20 c, the regulator will automatically resume operation. ocp otp bandgap reference + - vcc gnd vout r1 r2 ordering and marking information part number output voltage package marking information RT9058-25GV sot-23-3 00= RT9058-25GVl sot-23-3 (l) 2a= rt9058-25gx 2.5v sot-89-3 00= rt9058-30gv sot-23-3 2h= rt9058-30gvl sot-23-3 (l) 2g= rt9058-30gx 3.0v sot-89-3 10= rt9058-33gv sot-23-3 03= rt9058-33gvl sot-23-3 (l) 2b= rt9058-33gx 3.3v sot-89-3 01= rt9058-50gv sot-23-3 06= rt9058-50gvl sot-23-3 (l) 2c= rt9058-50gx 5.0v sot-89-3 02= part number output voltage package marking information rt9058-60gv sot-23-3 0r= rt9058-60gvl sot-23-3 (l) 2d= rt9058-60gx 6.0v sot-89-3 0d= rt9058-90gv sot-23-3 0n= rt9058-90gvl sot-23-3 (l) 2e= rt9058-90gx 9.0v sot-89-3 0c= rt9058-c0gv sot-23-3 0m= rt9058-c0gvl sot-23-3 (l) 2f= rt9058-c0gx 12.0v sot-89-3 0b=
rt9058 3 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. absolute maximum ratings (note 1) z vcc to gnd --------------------------------------------------------------------------------------------------------------- ? 0.3v to 40v z vout to gnd rt9058-c0/rt9058-60/rt9058-90 ----------------------------------------------------------------------------------- ? 0.3v to 15v rt9058-25/rt9058-30/rt9058-33/rt9058-50 --------------------------------------------------------------------- ? 0.3v to 6v z vout to vcc ------------------------------------------------------------------------------------------------------------- ? 40v to 0.3v z power dissipation, p d @ t a = 25 c sot-23-3 ------------------------------------------------------------------------------------------------------------------- 0.41w sot-89-3 ------------------------------------------------------------------------------------------------------------------- 0.6w z package thermal resistance (note 2) sot-23-3, ja -------------------------------------------------------------------------------------------------------------- 243.3 c/w sot-89-3, ja -------------------------------------------------------------------------------------------------------------- 167.7 c/w z lead temperature (soldering, 10 se c.) ------------------------------------------------------------------------------ 260 c z junction temperature ---------------------------------------------------------------------------------------------------- 150 c z storage temperature range ------------------------------------------------------------------------------------------- ? 65 c to 150 c z esd susceptibility (note 3) hbm (human body model) --------------------------------------------------------------------------------------------- 2kv mm (ma chine model) ---------------------------------------------------------------------------------------------------- 200v recommended operating conditions (note 4) z supply input voltage, vcc --------------------------------------------------------------------------------------------- 3.5v to 3 6v z junction temperature range ------------------------------------------------------------------------------------------- ? 40 c to 125 c z ambient temperature range ------------------------------------------------------------------------------------------- ? 40 c to 85 c electrical characteristics ((v out + 1v) < v cc < 36v, t a = 25 c, unless otherwise specified.) parameter symbol test conditions min typ max unit output voltage range 2.5 -- 12 v dc output accuracy i load = 10ma ? 2 -- 2 % dropout voltage i load = 10ma -- 0.3 0.5 v v cc quiescent current i q i load = 0ma, v out 5.5v, v cc = 12v -- 2 3.5 a i load = 0ma, v out > 5.5v, v cc = 12v -- 3.5 5 line regulation i load = 10ma -- 0.2 0.5 % load regulation 0 < i load < 50ma, v cc = v out + 2v ? 0.5 -- 0.5 % output current limit v out = 0.5 x v out (normal) 115 175 300 ma power supply rejection rate psrr f = 100hz, i out = 25ma -- ? 70 -- db f = 100khz, i out = 25ma --- ? 40 -- output noise voltage bw = 10hz ? 100khz v on c out = 1 f -- 27 x v out -- v rms thermal shutdown temperature i load = 30ma -- 150 -- c thermal shutdown hysteresis -- 20 -- c
rt9058 4 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. typical application circuit note 1. stresses beyond those listed ? absolute maximum ratings ? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions may affect device reliability. note 2. ja is measured at t a = 25 c on a high effective thermal conductivity four-layer test board per jedec 51-7. note 3. devices are esd sensitive. handling precaution is recommended. note 4. the device is not guaranteed to function outside its operating conditions. vcc gnd vout rt9058 1f v cc v out 1f
rt9058 5 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. output voltage vs. temperature 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 -50 -25 0 25 50 75 100 125 temperature (c) output voltage (v) v cc = 12v, v out = 3.3v load = 0ma load = 10ma load = 20ma load = 50ma typical operating characteristics output voltage vs. input voltage 3.20 3.25 3.30 3.35 3.40 4 8 12 16 20 24 28 32 36 input voltage (v) output voltage (v) v cc = 5v to 36v, v out = 3.3v load = 0ma load = 10ma load = 20ma load = 50ma quiescent current vs. input voltage 0.0 0.5 1.0 1.5 2.0 2.5 3.0 4 8 12 16 20 24 28 32 36 input voltage (v) quiescent current (a ) v cc = 4v to 36v, v out = 3.3v output voltage vs. output current 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 0 102030405060708090100 output current (ma) output voltage (v) v out = 3.3v v cc = 24v v cc = 12v v cc = 36v dropout voltage vs. temperature 0.0 0.4 0.9 1.3 1.8 2.2 -50 -25 0 25 50 75 100 125 temperature (c) dropout voltage (v) v out = 3.3v load = 10ma load = 20ma load = 50ma quiescent current vs. temperature 1.0 1.5 2.0 2.5 3.0 -50 -25 0 25 50 75 100 125 temperature (c) quiescent current (a ) v cc = 24v v cc = 36v v cc = 12v v out = 3.3v
rt9058 6 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. load transient response time (25ms/div) v cc = 12v, v out = 3.3v, i out = 1ma to 50ma v out (50mv/div) i out (50ma/div) time (25 s/div) v out (2v/div) i out (50ma/div) v in = 12v, v out = 3.3v, i out = 50ma power up response v in (10v/div) time (100 s/div) v cc (5v/div) v out (10mv/div) v cc = 10v to 14v, v out = 3.3v, i out = 100ma line transient response output current limit vs. temperature 0 30 60 90 120 150 180 210 240 270 300 -50 -25 0 25 50 75 100 125 temperature (c) output current limit (ma ) v out = 3.3v v cc = 24v v cc = 36v v cc = 12v psrr -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 frequency (hz) psrr (db) i out = 25ma i out = 10ma v cc = 12v, v out = 3.3v ground current vs. load current 0 50 100 150 200 0.001 0.01 0.1 1 10 100 1000 load current (ma) ground current ( a ) v cc = 12v, v out = 3.3v rising, t a = 125 c falling, t a = 125 c rising, t a = 25 c falling, t a = 25 c rising, t a = ? 40 c falling, t a = ? 40 c
rt9058 7 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. figure 1. derating curve of maximum power dissipation 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 25 50 75 100 125 ambient temperature (c) maximum power dissipation (w) 1 sot-89-3 four-layer pcb sot-23-3 applications information like any low dropout linear regulator, the rt9058's external input and output capacitors must be properly selected for stability and performance. use a 1 f or larger input capacitor and place it close to the ic's vcc and gnd pins. any output capacitor meeting the minimum 1m esr (equivalent series resistance) requirement may be used. place the output capacitor close to the ic's vout and gnd pins. increasing capacitance and decreasing esr can improve the circuit's psrr and line transient response. thermal considerations for continuous operation, do not exceed absolute the maximum junction temperature. the maximum power dissipation depends on the thermal resistance of the ic package, pcb layout, rate of surrounding airflow, and the allowed difference between the junction and ambient temperatures. the maximum power dissipation can be calculated by the following formula : p d(max) = (t j(max) ? t a ) / ja where t j(max) is the maximum junction temperature, t a is the ambient temperature, and ja is the junction to ambient thermal resistance. the recommended operating conditions specify a maximum junction temperature is 125 c. the junction to ambient thermal resistance, ja , is layout dependent. on a standard jedec 51-7 four-layer thermal test board , the thermal resistance, ja , of the sot-23-3 package is 243.3 c/w. for the sot-89-3 package, the ja , is 167.7 c/w. the maximum power dissipation at t a = 25 c can be calculated by the following formula : p d(max) = (125 c ? 25 c) / (243.3 c/w) = 0.41w for sot-23-3 package p d(max) = (125 c ? 25 c) / (167.7 c/w) = 0.6w for sot-89-3 package for a fixed t j(max) of 125 c, the maximum power dissipation depends on the operating ambient temperature and the package's thermal resistance, ja . the derating curve in figure 1 shows the effect of rising ambient temperature on the maximum recommended power dissipation.
rt9058 8 ds9058-00 april 2013 www.richtek.com ? copyright 2013 richtek technology corporation. all rights reserved. is a registered trademark of ric htek technology corporation. a b a1 b d c e h l sot-23-3 surface mount package dimensions in millimeters dimensions in inches symbol min max min max a 0.889 1.295 0.035 0.051 a1 0.000 0.152 0.000 0.006 b 1.397 1.803 0.055 0.071 b 0.356 0.508 0.014 0.020 c 2.591 2.997 0.102 0.118 d 2.692 3.099 0.106 0.122 e 1.803 2.007 0.071 0.079 h 0.080 0.254 0.003 0.010 l 0.300 0.610 0.012 0.024 outline dimension
rt9058 9 ds9058-00 april 2013 www.richtek.com richtek technology corporation 5f, no. 20, taiyuen street, chupei city hsinchu, taiwan, r.o.c. tel: (8863)5526789 richtek products are sold by description only. richtek reserves the right to change the circuitry and/or specifications without notice at any time. customers should obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. richtek cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a richtek product. information furnish ed by richtek is believed to be accurate and reliable. however, no responsibility is assumed by richtek or its subsidiaries for its use; nor for any infringeme nts of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of r ichtek or its subsidiaries. c1 b b b1 b a c e e d d1 h a 3-lead sot-89 surface mount package dimensions in millimeters dimensions in inches symbol min max min max a 1.397 1.600 0.055 0.063 b 0.356 0.483 0.014 0.019 b 2.388 2.591 0.094 0.102 b1 0.406 0.533 0.016 0.021 c 3.937 4.242 0.155 0.167 c1 0.787 1.194 0.031 0.047 d 4.394 4.597 0.173 0.181 d1 1.397 1.753 0.055 0.069 e 1.448 1.549 0.057 0.061 h 0.356 0.432 0.014 0.017
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