UNISONIC TECHNOLOGIES CO., LTD LR1122D CMOS IC LOW NOISE 200mA LDO REGULATOR DESCRIPTION The UTC LR1122D 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 LR1122D, 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 LR1122D 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 LR1122D. The UTC LR1122D 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 * Ultra Supply Current: * Standby Mode: * Very Low Dropout Voltage: * Ripple Rejection: 20µA (Typ.) 0.1µA (Typ.) 0.13V (Typ.) @IOUT =150mA, VOUT =2.85V 75dB (Typ.) @f=1kHz,VOUT=2.85V ±30ppm/°C (Typ.) * Temperature-Drift Coefficient of Output Voltage: 0.02%/ V (Typ.) * Well Line Regulation: ±1.0% (Typ.) * Output Voltage Accuracy: * Internal Fold Back Protection Circuit: 40mA (Typ.) @ short mode * CIN=COUT=1µF or more (Ceramic capacitors) are recommended to be used with this IC ORDERING INFORMATION Ordering Number Package LR1122DG-xx-AF5-R LR1122DG-xx-AB3-C-R Note: xx: Output Voltage, refer to Marking Information. SOT-25 SOT-89 www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 I G Pin Assignment 2 3 4 G CE NC I O - 5 O - Packing Tape Reel Tape Reel 1 of 7 QW-R502-320.M LR1122D MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING 12: 1.2V 15: 1.5V 16: 1.6V 18: 1.8V 20: 2.0V 22: 2.2V 25: 2.5V 2J: 2.85V 30: 3.0V 33: 3.3V 50: 5.0V SOT-89 SOT-25 CMOS IC 4 5 Voltage Code SDXXG 1 2 3 PIN CONFIGURATION SOT-89 SOT-25 PIN CODE: C PIN DESCRIPTIONS PIN NAME VIN GND CE NC VOUT DESCRIPTION Input Pin Ground Pin Chip Enable Pin. Active when this Pin is high. No Connection Output Pin BLOCK DIAGRAM VIN VOUT + Reference Voltage Current Limit CE UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw GND 2 of 7 QW-R502-320.M LR1122D CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER Input Voltage Input Voltage(CE Pin) Output Voltage Output Current SYMBOL VIN VCE VOUT IOUT RATINGS UNIT 9 V 8.5 V -0.3~ VIN+0.3 V 200 mA SOT-25 420 Power Dissipation PD mW SOT-89 550 Junction Temperature TJ +125 °С Operating Temperature TOPR -40~+85 °С Storage Temperature TSTG -55~+125 °С 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. ELECTRICAL CHARACTERISTICS (TA=25°С, VIN=Set VOUT+1V, IOUT=1mA, CI =CO=1µF, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN VIN = Set VOUT+1V VOUT > 2.0V ×0.99 Output Voltage VOUT IOUT=30mA -20 VOUT ≤ 2.0V Input Voltage VIN Load Regulation ∆VOUT 1mA≤IOUT≤150mA Output Current IOUT 200 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 1.5 CE Input Voltage Low VCEL Output Noise eN BW=10Hz to 100kHz, IOUT =30mA f=1kHz, Ripple 0.2VP-P VIN=Set VOUT+1V, IOUT=30mA Ripple Rejection RR (In case that V OUT=2.0V, VIN=3V) 1.2V≤VOUT＜1.5V 1.5V≤VOUT＜1.7V 1.7V≤VOUT＜2.0V Dropout Voltage VD I OUT=150mA 2.0V≤VOUT＜2.5V 2.5V≤VOUT＜2.8V Line Regulation Output Voltage Temperature Coefficient Low Output Nch Tr. ON Resistance ∆VOUT ∆VIN ∆VOUT ∆T RLOW 2.8V≤VOUT≤5.0V 1.2V≤VOUT≤4.0V, VSET+1V≤VIN≤5V 4.0V<VOUT≤5.0V, VSET+1V≤VIN≤6.5V 30 UNIT V mV V mV mA µA µA mA µA V V µVrms 75 dB 20 20 0.1 40 0.3 MAX ×1.01 +20 7.5 40 40 2 0.3 0.90 0.60 0.21 0.17 0.14 0.13 1.00 0.80 0.36 0.30 0.25 0.23 V 0.02 0.30 %/V -40°С≤TOPR≤85°С ±30 ppm/°С VIN=4.0,VCE=0V 70 Ω UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 3 of 7 QW-R502-320.M LR1122D CMOS IC TEST CIRCUIT VIN C1 1.0µF CE VIN VOUT UTC LR1122D C2 1.0µF V VOUT GND Basic Test Circuit IOUT A ISS VOUT UTC LR1122D C1 1.0µF CE C2 1.0µF GND Test Circuit for Supply Current TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R502-320.M LR1122D CMOS IC TYPICAL CHARACTERISTICS Output Voltage vs. Output Current 2.4 Output Voltage vs. Temperature 2.05 (VIN=3V) 2.04 2.03 Output Voltage, VOUT (V) 1.6 1.2 0.8 VOUT=2V VIN=3V VIN=4V VIN=5V 0 0 50 100 150 200 250 300 2.01 2.00 1.99 1.98 1.97 1.96 VOUT=2V 1.95 350 400 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Temperature, TOPR (°С) Output Current, IOUT (mA) Dropout Voltage vs. Output Current 450 Input Transient Response 3.0 300 200 150 100 TA=25°C VOUT=2V 0 0 50 100 150 VOUT=2V IOUT =30mA tR = tF = 5µs 10mV/div 250 50 Output Voltage 200 0 20 40 60 Output Current, IOUT (mA) Load Transient Response VOUT=2V VIN=3V 80 100 120 140 160 180 200 Time, t (µs) Output Voltage 0 20 40 60 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 100 0 Output Current 10mA 150mA 50mV/div 0 20mV/div 100mA 200 Output Voltage, VOUT (V) 50 Output Current, IOUT (mA) 100 Output Current 50mA 80 100 120 140 160 180 200 Time, t (µs) Load Transient Response 150 Output Voltage, VOUT (V) 4.0 Input Voltage 350 Output Voltage, VOUT (V) Dropout Voltage, VD (mV) 400 Input Voltage, VIN (V) 0.4 2.02 Output Current, IOUT (mA) Output Voltage, VOUT (V) 2.0 VOUT=2V VIN=3V 80 100 120 140 160 180 200 Time, t (µs) Output Voltage 0 20 40 60 5 of 7 QW-R502-320.M LR1122D 2 0 3 Output Voltage 1 0 0 20 40 60 80 CE Input Voltage 3 2 Output Voltage 1 0 0 20 40 60 Time, t (µs) 0 3 2 Output Voltage 1 0 0 20 40 60 80 3 2 Output Voltage 1 0 0 50 100 2 Output Voltage 0 150 150 200 200 250 300 Time, t (µs) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Turn Off Speed With CE Pin 250 300 IOUT = 150mA VOUT=2.5V CE Input Voltage 4 2 0 Output Voltage, VOUT (V) Output Voltage, VOUT (V) 3 CE Input Voltage, VCE (V) 2 0 100 2 0 100 IOUT = 30mA 4 VOUT=2.5V CE Input Voltage 50 4 Time, t (µs) Turn Off Speed With CE Pin 0 IOUT = 0mA CE Input Voltage Time, t (µs) 1 100 VOUT=2.5V Output Voltage, VOUT (V) 2 CE Input Voltage, VCE (V) Output Voltage, VOUT (V) CE Input Voltage 80 Turn Off Speed With CE Pin 6 4 2 0 100 IOUT=150mA Turn On Speed With CE Pin 6 4 Time, t(µs) VOUT=2.5V IOUT=30mA 3 CE Input Voltage, VCE (V) Output Voltage, VOUT (V) CE Input Voltage Output Voltage, VOUT (V) 4 2 Turn On Speed With CE Pin VOUT=2.5V 6 VOUT=2.5V CE Input Voltage, VCE (V) IOUT=0mA Turn On Speed With CE Pin CE Input Voltage, VCE (V) TYPICAL CHARACTERISTICS(Cont.) CE Input Voltage, VCE (V) CMOS IC 2 1 Output Voltage 0 0 50 100 150 200 250 300 Time, t (µs) 6 of 7 QW-R502-320.M LR1122D CMOS IC 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 7 of 7 QW-R502-320.M