UNISONIC TECHNOLOGIES CO., LTD L1131C Preliminary CMOS IC LOW NOISE 150mA LDO REGULATOR DESCRIPTION The UTC L1131C 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 normal operation of UTC L1131C, the dropout voltage is very low, and the response of line transient and load transient are very well. Inside each UTC L1131C, there’re many functions which can be seen in the block figure, for example, a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit. The UTC L1131C can be used as an ideal of power source for hand-held communication equipment, such as cameras, VCRs, camcorders and other battery-powered equipment. FEATURES * Ultra Supply Current: 75µA(typ.) * Standby Mode: 0.1µA(typ.) * Very Low Dropout Voltage: 0.28V(typ.) @IOUT=150mA, VOUT=2.5V * Ripple Rejection: 70dB(typ.)@f=1kHz 60dB(typ.)@f=10kHz * Temperature-Drift Coefficient of Output Voltage: ±100ppm/°C(typ.) * Well Line Regulation: 0.02%/V(typ.) * Output Voltage Accuracy: ±2.0%(typ.) * Internal Fold Back Protection Circuit * CIN=COUT=1µF or more (Ceramic capacitors) are recommended to be used with this IC ORDERING INFORMATION Ordering Number Package Lead Free Halogen Free L1131CL-xx-AF5-R L1131CG-xx-AF5-R SOT-25 Note: Pin Assignment: I:VIN O:VOUT G:GND C:CE N:NC www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 I Pin Assignment 2 3 4 5 G C N O Packing Tape Reel 1 of 6 QW-R502-308.c L1131C Preliminary MARKING PACKAGE VOLTAGE CODE MARKING 4 5 SOT-25 20:2.0V 25:2.5V HXXCG G: Halogen Free L: Lead Free Voltage Code 1 CMOS IC 2 3 PIN DESCRIPTION PIN NO 1 2 3 4 5 PIN NAME VIN GND CE NC VOUT DESCRIPTION Input pin Ground pin Input pin for chip enable, “high” means enable the chip. No connection Output pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-308.c L1131C Preliminary CMOS IC BLOCK DIAGRAM VIN VOUT + Reference Voltage Current Limit CE UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw GND 3 of 6 QW-R502-308.c L1131C Preliminary CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 6.5 V Input Voltage (CE Pin) VCE 6.5 V Output Voltage VOUT -0.3~VIN+0.3 V Output Current IOUT 200 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 L1131C-2.0V PARAMETER Output Voltage Input Voltage Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Input Voltage High Low Output Noise CE Pull-down Resistance Ripple Rejection Dropout Voltage Line Regulation SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V, 1mA ≤ IOUT ≤30mA VIN ΔVOUT VIN = Set VOUT+1V ΔIOUT 1mA ≤ IOUT≤ 150mA IOUT VIN−VOUT = 1.0V ISS VIN = Set VOUT+1V, IOUT = 0mA IST-BY VIN= Set VOUT+1V VCE = GND ILIMIT VOUT = 0V VCEH VCEL eN BW = 10Hz ~ 100kHz RPD f=1kHz Ripple 0.5Vp−p RR VIN−VOUT = 1.0V, IOUT = 30mA f=10kHz VD IOUT=150mA ΔVOUT Set VOUT+0.5V ≤VIN≤6.0V, IOUT=30mA ΔVIN Output Voltage Temperature Coefficient On Resistance of Nch for Auto Discharge ΔVOUT ΔT RLOW IOUT = 30mA -40°C ≤ TOPR ≤85°C VCE = 0V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.96 TYP MAX 2.04 6.0 UNIT V V 22 40 mV 150 30 2.0 70 60 0.32 mA μA μA mA VIN V 0.3 V µVrms 8.0 MΩ dB dB 0.55 V 0.02 0.10 75 0.1 40 1.5 0.0 0.7 95 1.0 %/V ±100 ppm/°С 60 Ω 4 of 6 QW-R502-308.c L1131C Preliminary CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) L1131C-2.5V PARAMETER Output Voltage Input Voltage SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V, 1mA ≤ IOUT ≤30mA VIN ΔVOUT VIN = Set VOUT+1V, 1mA ≤ IOUT≤ 150mA ΔIOUT Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Input Voltage High Low Output Noise CE Pull-down Resistance Ripple Rejection Dropout Voltage Line Regulation Output Voltage Temperature Coefficient On Resistance of Nch for Auto Discharge IOUT ISS IST-BY ILIMIT VCEH VCEL eN RPD RR VIN−VOUT = 1.0V VIN = Set VOUT+1V, IOUT = 0mA VIN= Set VOUT+1V, VCE = GND VOUT = 0V MAX 2.55 6.0 UNIT V V 22 40 mV 30 2.0 70 60 0.28 mA μA μA mA VIN V 0.3 V µVrms 8.0 MΩ dB dB 0.50 V 0.02 0.10 75 0.1 40 1.5 0.0 BW = 10Hz ~ 100kHz 0.7 Ripple 0.5Vp−p VIN−VOUT = 1.0V, IOUT = 30mA IOUT=150mA f=1kHz f=10kHz ΔVOUT IOUT = 30mA, -40°C ≤ TOPR ≤85°C ΔT VCE = 0V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 150 VD ΔVOUT Set VOUT+0.5V ≤VIN≤6.0V, IOUT = 30mA ΔVIN RLOW MIN 2.45 95 1.0 %/V ±100 ppm/°С 60 Ω 5 of 6 QW-R502-308.c L1131C Preliminary CMOS IC TEST CIRCUIT IN ISS VOUT VIN CE OUT UTC L1131C-xx GND 1.0µF 1.0µF TYPICAL APPLICATION CIRCUIT 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 6 of 6 QW-R502-308.c