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: 18µA (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: ±0.8% (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 Lead Free Halogen Free LR1122DL-xx-AF5-R LR1122DG-xx-AF5-R Note: xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing SOT-25 Tape Reel 1 of 9 QW-R502-320.E LR1122D CMOS IC MARKING PACKAGE SOT-25 VOLTAGE CODE 12:1.2V 15:1.5V 16:1.6V 18:1.8V 20:2.0V 25:2.5V 2J:2.85V 30:3.0V 33:3.3V PIN CONFIGURATION PIN DESCRIPTIONS PIN NO. 1 2 3 4 5 PIN NAME VDD GND CE NC VOUT MARKING 4 5 Voltage Code SBXX 1 2 L: Lead Free G: Halogen Free 3 DESCRIPTION Input Pin Ground Pin Chip Enable Pin. Active when this Pin is high. No Connection Output Pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 9 QW-R502-320.E LR1122D CMOS IC BLOCK DIAGRAM VDD VOUT + Reference Voltage Current Limit CE UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw GND 3 of 9 QW-R502-320.E LR1122D CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 6.0 V Input Voltage(CE Pin) VCE 6.0 V Output Voltage VOUT -0.3~ VIN+0.3 V Output Current IOUT 300 mA Power Dissipation PD 420 mW 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 VOUT > 2.0V Output Voltage VOUT VIN = Set VOUT+1V VOUT ≤ 2.0V Input Voltage VIN ΔVOUT Load Regulation 1mA≤IOUT≤150mA ΔIOUT Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current CE Input Voltage High Low Output Noise Ripple Rejection IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN RR MIN ×0.992 -16 TYP 20 MAX UNIT ×1.008 V +16 mV 5.0 V 40 200 I OUT=0A VCE=0V VOUT=0V mV 30 mA µA µA mA µA V V µVrms 75 dB 18 0.1 40 0.3 25 2 1.5 0.3 BW=10Hz to 100kHz, IOUT =30mA f=1kHz, Ripple 0.2VP-P VIN=Set VOUT+1V, IOUT=30mA (In case that V OUT=2.0V, VIN=3V) 1.2V≤VOUT＜1.5V 1.5V≤VOUT＜1.7V 1.7V≤VOUT＜2.0V I OUT=150mA 2.0V≤VOUT＜2.5V 2.5V≤VOUT＜2.8V 2.8V≤VOUT＜3.3V 0.40 0.24 0.21 0.17 0.14 0.13 0.50 0.38 0.34 0.30 0.25 0.23 V 0.10 %/V Dropout Voltage VD Line Regulation ΔVOUT ΔVIN Set VOUT+0.5V≤VIN≤5V 0.02 ΔVOUT ΔT -40°С≤TOPR≤85°С ±30 ppm/°С RLOW VIN=4.0,VCE=0V 70 Ω Output Voltage Temperature Coefficient Low Output Nch Tr. ON Resistance UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 9 QW-R502-320.E LR1122D CMOS IC TEST CIRCUIT VDD C1 1.0µF CE VDD VOUT UTC LR1122D C2 1.0µF V VOUT GND Basic Test Circuit UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw IOUT A ISS VOUT UTC LR1122D C1 1.0µF CE C2 1.0µF GND Test Circuit for Supply Current 5 of 9 QW-R502-320.E LR1122D CMOS IC TYPICAL APPLICATION CIRCUIT IN CE Cap. VOUT VDD UTC LR1122D + + Cap. GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUT 6 of 9 QW-R502-320.E 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 7 of 9 QW-R502-320.E 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) 8 of 9 QW-R502-320.E 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 9 of 9 QW-R502-320.E