UNISONIC TECHNOLOGIES CO., LTD LR1122B CMOS IC LOW NOISE 200 mA LDO REGULATOR DESCRIPTION The UTC LR1122B 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 LR1122B, 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 LR1122B 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 LR1122B. The UTC LR1122B 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: 18µA (Typ.) * Standby Mode: 0.1µA (Typ.) * Very Low Dropout Voltage: 0.13V (Typ.) @IOUT =150mA, VOUT =2.85V * Ripple Rejection: 75dB (Typ.) @f=1kHz,VOUT=2.85V * Temperature-Drift Coefficient of Output Voltage: ±30ppm/°C (Typ.) * Well Line Regulation: 0.02%/ V (Typ.) * Output Voltage Accuracy: ±0.8% (Typ.) * 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 LR1122BG-xx-AF5-R SOT-25 Note: xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd Packing Tape Reel 1 of 11 QW-R502-320.B LR1122B CMOS IC MARKING PACKAGE VOLTAGE CODE SOT-25 16:1.6V 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 3 Voltage Code 2 1 SBXX 4 L: Lead Free G: Halogen Free 5 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 11 QW-R502-320.B LR1122B CMOS IC BLOCK DIAGRAM VDD VOUT + Reference Voltage Current Limit CE UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw GND 3 of 11 QW-R502-320.B LR1122B 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) LR1122B-1.6V PARAMETER Output Voltage Input Voltage (Note) SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V VIN ΔVOUT 1mA≤IOUT≤150mA ΔIOUT Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current CE Input Voltage High Low Output Noise IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation Output Voltage Temperature Coefficient ΔVOUT ΔT TYP MAX 1.613 5.0 UNIT V V 20 40 mV 18 0.1 40 0.3 25 2 200 I OUT=0A VCE=0V VOUT=0V 30 mA µA µA mA µA V V µVrms 75 dB 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) I OUT=150mA 0.24 0.38 V Set VOUT+0.5V≤VIN≤5V 0.02 0.10 %/V -40°С≤TOPR≤85°С ±30 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.587 ppm/°С 4 of 11 QW-R502-320.B LR1122B CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) LR1122B-2.0V PARAMETER Output Voltage Input Voltage (Note) SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V VIN ΔVOUT 1mA≤IOUT≤150mA ΔIOUT Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current CE Input Voltage High Low Output Noise IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation Output Voltage Temperature Coefficient LR1122B-2.5V PARAMETER Output Voltage Input Voltage (Note) Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current High Low Output Noise IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation Output Voltage Temperature Coefficient ΔVOUT ΔT MAX 2.016 5.0 UNIT V V 20 40 mV 18 0.1 40 0.3 25 2 30 mA µA µA mA µA V V µVrms 75 dB 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) I OUT=150mA 0.17 0.30 V Set VOUT+0.5V≤VIN≤5V 0.02 0.10 %/V -40°С≤TOPR≤85°С ±30 MIN 2.484 ppm/°С TYP MAX 2.516 5.0 UNIT V V 20 40 mV 18 0.1 40 0.3 25 2 200 I OUT=0A VCE=0V VOUT=0V 30 mA µA µA mA µA V V µVrms 75 dB 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) I OUT=150mA 0.14 0.25 V Set VOUT+0.5V≤VIN≤5V 0.02 0.10 %/V -40°С≤TOPR≤85°С ±30 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 200 I OUT=0A VCE=0V VOUT=0V SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V VIN ΔVOUT 1mA≤IOUT≤150mA ΔIOUT Load Regulation CE Input Voltage ΔVOUT ΔT MIN 1.984 ppm/°С 5 of 11 QW-R502-320.B LR1122B CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) LR1122B-2.85V PARAMETER Output Voltage Input Voltage (Note) SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V VIN ΔVOUT 1mA≤IOUT≤150mA ΔIOUT Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current CE Input Voltage High Low Output Noise IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation Output Voltage Temperature Coefficient LR1122B-3.0V PARAMETER Output Voltage Input Voltage (Note) Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current High Low Output Noise IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation Output Voltage Temperature Coefficient ΔVOUT ΔT MAX 2.866 5.0 UNIT V V 20 40 mV 30 mA µA µA mA µA V V µVrms 75 dB 18 0.1 40 0.3 I OUT=0A VCE=0V VOUT=0V 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) I OUT=150mA 0.13 0.23 V Set VOUT+0.5V≤VIN≤5V 0.02 0.10 %/V -40°С≤TOPR≤85°С ±30 MIN 2.984 ppm/°С TYP MAX 3.016 5.0 UNIT V V 20 40 mV 18 0.1 40 0.3 25 2 200 I OUT=0A VCE=0V VOUT=0V 30 mA µA µA mA µA V V µVrms 75 dB 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) I OUT=150mA 0.13 0.23 V Set VOUT+0.5V≤VIN≤5V 0.02 0.10 %/V -40°С≤TOPR≤85°С ±30 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 200 SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V VIN ΔVOUT 1mA≤IOUT≤150mA ΔIOUT Load Regulation CE Input Voltage ΔVOUT ΔT MIN 2.834 ppm/°С 6 of 11 QW-R502-320.B LR1122B CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) LR1122B-3.3V PARAMETER Output Voltage Input Voltage (Note) SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V VIN ΔVOUT 1mA≤IOUT≤150mA ΔIOUT Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Pull-down Current CE Input Voltage High Low Output Noise IOUT ISS IST-BY ILIMIT IPD VCEH VCEL eN Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation TYP MAX 3.316 5.0 UNIT V V 20 40 mV 200 30 mA µA µA mA µA V V µVrms 75 dB 18 0.1 40 0.3 I OUT=0A VCE=0V VOUT=0V 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) I OUT=150mA 0.13 0.23 V Set VOUT+0.5V≤VIN≤5V 0.02 0.10 %/V ΔVOUT Output Voltage Temperature -40°С≤TOPR≤85°С ΔT Coefficient Note: Max. Input Voltage is 5.5V during 500hours UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 3.284 ±30 ppm/°С 7 of 11 QW-R502-320.B LR1122B CMOS IC TEST CIRCUIT IN ISS VOUT VDD CE OUT UTC LR1122B-xx GND 1.0µF 1.0µF TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 11 QW-R502-320.B LR1122B 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 VIN=3V VIN=4V VIN=5V 0 0 50 100 150 200 250 2.01 2.00 1.99 1.98 1.97 1.96 1.95 300 350 400 -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 3.0 250 200 150 100 Ta=25°C 0 0 50 100 150 10mV/div 300 50 Output Voltage IOUT =30mA tR = tF = 5µs 200 0 20 40 60 Output Current, IOUT (mA) Load Transient Response Output Voltage 0 20 40 60 VIN=3V 80 100 120 140 160 180 200 Time, t (µs) 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 Output Voltage 0 20 40 60 VIN=3V 80 100 120 140 160 180 200 Time, t (µs) 9 of 11 QW-R502-320.B LR1122B 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 2 Output Voltage 1 0 0 50 100 Output Voltage, VOUT (V) 3 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 CE Input Voltage 4 2 0 Output Voltage, VOUT (V) 2 CE Input Voltage, VCE (V) 4 0 100 2 3 100 IOUT = 30mA CE Input Voltage 50 4 Time, t (µs) Turn Off Speed With CE Pin 0 IOUT = 0mA 0 Time, t (µs) 1 100 CE Input Voltage 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 6 4 Time, t(µs) Turn On Speed With CE Pin 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 6 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) 10 of 11 QW-R502-320.B LR1122B 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 11 of 11 QW-R502-320.B