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 * Halogen Free ORDERING INFORMATION Ordering Number Package L1131CG-xx-AF5-R SOT-25 Note: Pin Assignment: I:VIN O:VOUT G:GND C:CE N:NC www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd 1 I Pin Assignment 2 3 4 G C N 5 O Packing Tape Reel 1 of 6 QW-R502-308.b L1131C Preliminary MARKING PACKAGE VOLTAGE CODE MARKING 3 SOT-25 20:2.0V 25:2.5V 2 1 HXXCG 4 CMOS IC Voltage Code 5 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.b 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.b 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 SYMBOL Output Voltage VOUT Input Voltage VIN ΔVOUT ΔIOUT Load Regulation TEST CONDITIONS MIN VIN = Set VOUT+1V 1mA ≤ IOUT ≤30mA TYP 1.96 VIN = Set VOUT+1V 1mA ≤ IOUT≤ 150mA 22 MAX UNIT 2.04 V 6.0 V 40 mV Output Current IOUT VIN−VOUT = 1.0V Supply Current ISS VIN = Set VOUT+1V, IOUT = 0mA 75 95 Supply Current (Standby) IST-BY VIN= Set VOUT+1V VCE = GND 0.1 1.0 Short Current Limit ILIMIT VOUT = 0V 40 CE Input Voltage 150 High VCEH 1.5 Low VCEL 0.0 Output Noise eN CE Pull-down Resistance RPD Ripple Rejection RR Dropout Voltage VD ΔVOUT ΔVIN Line Regulation Output Voltage Temperature Coefficient On Resistance of Nch for Auto Discharge ΔVOUT ΔT RLOW 0.7 VIN 0.3 2.0 μA V V µVrms 8.0 70 60 MΩ dB dB IOUT=150mA 0.32 0.55 V Set VOUT+0.5V ≤VIN≤6.0V, IOUT=30mA 0.02 0.10 %/V IOUT = 30mA −40°C ≤ TOPR ≤85°C ±100 ppm/°С 60 Ω VCE = 0V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw f=1kHz f=10kHz μA mA 30 BW = 10Hz ~ 100kHz Ripple 0.5Vp−p VIN−VOUT = 1.0V, IOUT = 30mA mA 4 of 6 QW-R502-308.b L1131C Preliminary CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) L1131C-2.5V PARAMETER SYMBOL Output Voltage VOUT Input Voltage TEST CONDITIONS MIN VIN = Set VOUT+1V 1mA ≤ IOUT ≤30mA 2.45 VIN ΔVOUT VIN = Set VOUT+1V ΔIOUT 1mA ≤ IOUT≤ 150mA Load Regulation TYP 22 MAX UNIT 2.55 V 6.0 V 40 mV Output Current IOUT VIN−VOUT = 1.0V Supply Current ISS VIN = Set VOUT+1V, IOUT = 0mA 75 95 μA IST-BY VIN= Set VOUT+1V VCE = GND 0.1 1.0 μA ILIMIT VOUT = 0V Supply Current (Standby) Short Current Limit CE Input Voltage 150 mA 40 mA High VCEH 1.5 VIN V Low VCEL 0.0 0.3 V Output Noise eN CE Pull-down Resistance RPD Ripple Rejection RR Dropout Voltage Line Regulation Output Voltage Temperature Coefficient On Resistance of Nch for Auto Discharge 0.7 Ripple 0.5Vp−p VIN−VOUT = 1.0V, IOUT = 30mA VD IOUT=150mA ΔVOUT Set VOUT+0.5V ≤VIN≤6.0V ΔVIN IOUT = 30mA ΔVOUT IOUT = 30mA ΔT −40°C ≤ TOPR ≤85°C RLOW VCE = 0V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 30 BW = 10Hz ~ 100kHz 2.0 µVrms 8.0 MΩ f=1kHz 70 dB f=10kHz 60 dB 0.28 0.50 V 0.02 0.10 %/V ±100 ppm/°С 60 Ω 5 of 6 QW-R502-308.b 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.b