UNISONIC TECHNOLOGIES CO., LTD LR9101 CMOS IC LOW NOISE 300mA LDO REGULATOR DESCRIPTION The UTC LR9101 is a typical LDO (linear regulator) with the features of high output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection. During operation of the UTC LR9101, the dropout voltage is very low and the response of line transient and load transient are very well. Internally, there’re many functions of UTC LR9101 which can be seen in the block figure. There are a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit in each UTC LR9101. The UTC LR9101 can be used as an ideal of the power supply for hand-held communication equipment, such as: power source for portable communication equipment, power source for electrical appliances, for example, cameras, VCRs and camcorders and power source for battery-powered equipment. FEATURES * Supply Current: 50µA (Typ.) * Standby Mode: 0.1µA (Typ.) * Ripple Rejection: 70dB (Typ.) @ f=1kHz,VOUT=2.5V * Well Line Regulation: 0.02%/ V (Typ.) * CIN=COUT=1µF or more (Ceramic capacitors) are recommended to be used with this IC ORDERING INFORMATION Note: Ordering Number LR9101G-xx-AE2-R LR9101G-xx-AE3-R LR9101G-xx-AE5-R LR9101G-xx-AL4-R LR9101G-xx-AL5-R xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd Package SOT-23-3 SOT-23 SOT-23-5 SOT-343 SOT-353 Packing Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel 1 of 5 QW-R502-A14.K LR9101 CMOS IC MARKING INFORMATION PACKAGE VOLTAGE CODE SOT-23 SOT-23-3 MARKING R1XXG 10: 1.0V 12: 1.2V 15: 1.5V 18: 1.8V 25: 2.5V 27: 2.7V 28: 2.8V 29: 2.9V 30: 3.0V 33: 3.3V SOT-23-5 SOT-353 Voltage Code SOT-343 PIN CONFIGURATION SOT-23/SOT-23-3 SOT-23-5/SOT-353 SOT-343 PIN DESCRIPTION SOT-23 SOT-23-3 3 1 2 PIN NO. SOT-23-5 SOT-353 1 2 3 4 5 SOT-343 4 2 1 3 PIN NAME VIN GND CE NC VOUT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw DESCRIPTION Input Pin Ground Pin Chip Enable Pin. Active when this Pin is high. No Connection Output Pin 2 of 5 QW-R502-A14.K LR9101 CMOS IC BLOCK DIAGRAM For SOT-23-5/SOT-343/SOT-353 Package VIN VOUT + Reference Voltage Current Limit CE GND For SOT-23 Package VIN VOUT + Reference Voltage Current Limit GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R502-A14.K LR9101 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS Input Voltage VIN 6 Input Voltage (CE Pin) VCE 6 Output Voltage VOUT -0.3~ VIN+0.3 Output Current IOUT 400 SOT-23/SOT-23-3 280 SOT-23-5 300 Power Dissipation PD SOT-343 250 SOT-353 260 Junction Temperature TJ +125 Operating Temperature TOPR -40~+85 Storage Temperature TSTG -55~+125 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. UNIT V V V mA mW mW mW mW °С °С °С ELECTRICAL CHARACTERISTICS (TA=25°С, VIN=Set VOUT+1V, IOUT=1mA, CI =CO=1µF, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS VOUT > 2.0V Output Voltage VOUT VIN = Set VOUT+1V, VOUT ≤ 2.0V Input Voltage VIN Load Regulation ∆VOUT 1mA≤IOUT≤150mA Output Current IOUT Supply Current ISS I OUT=0A Supply Current (Standby) IST-BY VCE=0V Short Current Limit ILIMIT VOUT=0V CE Pull-down Current IPD High VCEH CE Input Voltage Low VCEL Output Noise eN BW=10Hz to 100kHz, IOUT =30mA f=1kHz, Ripple 0.2VRMS VIN=Set VOUT+1V, IOUT=30mA Ripple Rejection RR (In case that V OUT=2.0V, VIN=3V) 1.0V≤VOUT<1.2V 1.2V≤VOUT<1.5V 1.5V≤VOUT<1.7V Dropout Voltage VD IOUT=150mA 1.7V≤VOUT<2.0V 2.0V≤VOUT<2.5V 2.5V≤VOUT<2.8V 2.8V≤VOUT≤5.0V ∆VOUT 1.2V≤VOUT≤4.0V, Line Regulation ∆VIN VSET+0.5V≤VIN≤5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN ×0.99 TYP MAX ×1.01 1.1 30 UNIT V mV V mV mA µA µA mA µA V V µVrms 70 dB 0.60 0.40 0.24 0.21 0.19 0.17 0.15 V ±20 20 6 40 300 50 0.1 200 0.3 2 1.5 0.02 0.10 %/V 4 of 5 QW-R502-A14.K LR9101 CMOS IC TEST CIRCUIT VIN C1 1.0µF VIN VOUT UTC LR9101 C2 1.0µF V VOUT IOUT A ISS Basic Test Circuit C1 1.0µF CE GND CE VOUT UTC LR9101 C2 1.0µF GND Test Circuit for Supply Current TYPICAL APPLICATION CIRCUIT IN C1 1.0μF VOUT VIN CE UTC LR9101 GND OUT C2 1.0μF UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R502-A14.K