________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 1/7 um165xx 300ma, micropower, vldo linear regulator um165xx sot23-3 general description the um165xx series are vldo (very low dropout) linear regulators designed for low power portable applications. typical output noise is only 75 v rms and maximum dropout is just 90mv at the load current of 150ma.the internal p-ch annel mosfet pass transistor requires no base current, allowing the device to draw only 100 a during normal operation at the maximum load current of 300ma. other features include high output voltage accu racy, excellent transient response, under voltage lockout, stability with ultralow esr ceramic capacitors as small as 1 f, reverse-battery protection, short-circuit and thermal overload pr otection and output current limiting. the um165xx series are available in a low profile sot23-3 package. applications features z bluetooth/802.11 cards z pdas and notebook computers z portable instruments and battery-powered systems z cellular phones z very low dropout: 90mv(max) at 150ma z maximum input voltage: 6.0v z low noise:75 v rms (10hz to 100khz) z 2%voltage accuracy at 150ma z fast transient response z under voltage lockout z fixed output voltage: 3.3v/3.0v/2.8v/2.7v/2.5v/1.8v/1.5v/1.3v/ 1.2v z output current limit z reverse-battery protection z no protection diodes needed z stable with 1 f output capacitor z short-circuit and thermal overload protection z low profile sot23-3 package pin configurations top view um165xx m: monthly code sot23-3
________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 2/7 um165xx ordering information part number output voltage packaging type marking code shipping qty um165415 4.15v 53s um16535 3.5v 53z um16533 3.3v 53u um16530 3.0v 53r um16528 2.8v 53q UM16527 2.7v 53p um16525 2.5v 53n um16518 1.8v 53k um16515 1.5v 53j um16513 1.3v 53e um16512 1.2v sot23-3 53d 3000pcs/7inch tape & reel pin description pin number symbol function 1 gnd ground 2 out voltage regulated output 3 in power supply absolute maximum ratings (note 1) symbol parameter value unit v in supply voltage on in pin -7.5 to +7.5 v v out voltage on out pin -0.3 to +7.5 v output short-circuit duration indefinite t j operating junction temperature (notes 2, 3) -40 to +125 c t stg storage temperature range -65 to +150 c t l lead temperature for sold ering 10 seconds +300 c note 1: absolute maximum ratings are those valu es beyond which the life of a device may be impaired. note 2: the um165xx is tested and specifi ed under pulse load conditions such that t j t a . the device is guaranteed to meet performance specifications from 0 to 70 . specifications over the ? 40 to 125 operating junction temperature range are assured by design, characterization and correlation with statistical process controls. note 3: this ic includes overtemperature protec tion that is intended to protect the device during momentary overload conditions. junc tion temperature will exceed 125 when overtemperature protection is active. contin uous operation above the specified maximum operating junction temperature may impair device reliability.
________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 3/7 um165xx electrical characteristics symbol parameter test conditions min typ max unit v in input voltage range v out + v drop 6.0 v v uvlo1 note1 input under voltage lockout v in falling 2.0 2.6 v v uvlo2 note2 input under voltage lockout v in falling 2.1 2.3 v i out =0ma 90 a i q operating quiescent current i out =300ma 100 esd rating human body mode 2 kv i out output current 300 ma 1m a i out 150ma, t a =+25 -1 +1 % 1ma i out 150ma, t a =-40 to +85 -2 +2 output voltage accuracy 1ma i out 300ma, t a =-40 to +85 -2.5 +2.5 v do dropout voltage i out =150ma 90 mv i limt output current limit v in 2.5v 450 ma input reverse leakage current (out to in leakage current) v in =4v, v out =5.5v chip active 0.01 1.5 a t shdn thermal-shutdown temperature 160 t shdn thermal-shutdown hysteresis 20 line regulation v out +1 v v in v out +2v i out =10ma 0.09 %/v load regulation v in =v out +1v 1ma i out 150ma 0.2 % output voltage noise 10hz to 100khz c in =0.1 f, i out =10ma 75 v rms f=100hz 70 db f=1khz 65 f=10khz 50 psrr power supply ripple rejection v in =v out +1v i out =100ma f=100khz 40 note1: v uvlo1 is measured for devices with v out 1.8v. note2: v uvlo2 is measured for devices with v out 1.5v. note3: v do just define for device with v out 2.5v .
________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 4/7 um165xx pin function gnd (pin1) : ground and heat sink. solder to a ground plane or large pad to maximize heat dissipation. out (pin 2): voltage regulated output. the out pin supplies power to the load. a minimum output capacitor of 1 f is required to ensure stability. larger output capacitors may be required for applications with large transient loads to limit peak voltage transients. see the applications information section for more information on output capacitance. in (pin 3): power for um165xx and load. power is supp lied to the devices through the in pin. the in pin should be locally bypassed to ground if the um165xx series are more than a few inches away from another source of bulk capacitance. in general, the output impedance of a battery rises with frequency, so it is usually advisab le to include an input bypass capacitor in battery-powered circuits. a cap acitor in the range of 0.1 f to 1 f is usually sufficient. the um165xx series are designed to withstand reverse voltages on the in pin with respect to both ground and the output pin. in the case of a reversed input, which can happen if a battery is plugged in backwards, the um165xx will act as if there is a large resistor in series with its input with only a small amount of current flow. typical application circuit
________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 5/7 um165xx typical performance characteristics i out =30ma to 200ma (200ma/div) v out (20mv/div) um16533s vin=4.3v,100us/div v in =3.5v to 4.5v (2.0v/div) v out (100mv/div) um16533s i load =100ma,100us/div load transient response line transient response quiescent current vs input voltage 0 20 40 60 80 100 120 140 2.533.544.555.56 input voltage(v) quiescent current(ua) dropout voltage vs output current 0 20 40 60 80 100 120 0 25 50 75 100 125 150 175 200 225 250 275 300 output current(ma) dropout voltage(mv) outpout voltage vs output current 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 0 1 50 100 150 200 250 300 output current(ma) dropout voltage(v) outpout voltage vs output current 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 0 1 50 100 150 200 250 300 output current(ma) dropout voltage(v)
________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 6/7 um165xx package information um165xx: sot23-3 outline drawing dimensions millimeters inches symbol min max min max a 1.050 1.250 0.041 0.049 a1 0.000 0.100 0.000 0.004 a2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 d 2.820 3.020 0.111 0.119 e 1.500 1.700 0.059 0.067 e1 2.650 2.950 0.104 0.116 e 0.950ref 0.037ref e1 1.800 2.000 0.071 0.079 l 0.550ref 0.022ref l1 0.300 0.600 0.012 0.024 0 8 0 8 land pattern notes: 1. compound dimension: 2.921.60 2. unit: mm; 3. general tolerance 0.05mm unless otherwise specified; 4. the layout is just for reference. tape and reel orientation
________________________________________________________________________ http://www.union-ic.com rev.04 feb.2012 7/7 um165xx important notice the information in this document has been car efully reviewed and is believed to be accurate. nonetheless, this doc ument is subject to change without notice. union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. union rese rves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. union semiconductor, inc add: 2f, no. 3, lane 647 songtao road, shanghai 201203 tel: 021-51093966 fax: 021-51026018 website: www.union-ic.com
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