UNISONIC TECHNOLOGIES CO., LTD L1183A Preliminary CMOS IC 300mA CMOS LDO DESCRIPTION The UTC L1183A is a COMS positive linear regulator. One of it’s feature is the very low quiescent current typical as low as 30μA and its dropout voltage is extremely low with 300mA output current. The internal circuit includes thermal shutdown and current fold-back to prevent device failure when the circuit is operated in the bad conditions. In application, the UTC L1183A needs a low noise, regulated supply. For stable operation, the output capacitance value should be 2.2μF or more. The UTC L1183A is an ideal for battery applications, such as instrumentations, portable electronics, wireless devices, cordless phones, PC peripherals, and battery powered widgets. 4 5 1 2 3 SOT-25 FEATURES * Accurate to within 1.5% * Quiescent current: 30μA * Internal over-temperature shutdown * With current limiting * Internal short circuit current fold-back * Has power-saving shutdown mode * Very low temperature coefficient * Halogen Free ORDERING INFORMATION Ordering Number Package L1183AG-xx-AF5-R SOT-25 Note: xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd Packing Tape Reel 1 of 5 QW-R502-315.d L1183A Preliminary CMOS IC MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING 12 :1.2V 15 :1.5V SOT-25 28 :2.8V 31 :3.1V 33 :3.3V PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 PIN NAME VIN GND 3 EN 4 NC 5 VOUT DESCRIPTION Input for voltage input. A 1µF or greater capacitor should be placed in this pin. Ground. Enable pin. Pulling his pin low, can shut down the PMOS pass transistor, and the current consuming can be set less than 1µA. Output voltage pin. The capacitor which connected between this pin and GND should be decoupled with a 1µF or a greater value low ESR ceramic capacitor. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-315.d L1183A Preliminary CMOS IC BLOCK DIAGRAM VIN Overcurrent Shutdown EN Thermal Shutdown - NC AMP + VOUT R1 VREF=1.215V R2 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R502-315.d L1183A Preliminary CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN -0.3~ +8 V Input Voltage (EN,BYP) -0.3~ +8 V Output Voltage VOUT -0.3~ VIN+0.3 V Output Voltage IOUT PD / (VIN - VOUT) mA Power Dissipation PD 400 mW Junction Temperature TJ 150 °C Storage Temperature TSTG -65~ +150 °C 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. RECOMMENDED OPERATING CONDITIONS PARAMETER Ambient Temperature Junction Temperature Storage Temperature THERMAL DATA SYMBOL Ta TJ TSTG RATINGS - 40~ +85 - 40~ +125 -65~ +125 UNIT °C °C °C PARAMETER SYMBOL θJA θJC RATINGS 280 140 UNIT °C/W °C/W Junction to Ambient Junction to Case (Note) Note: θJC on center of molding compound if IC has on tab ELECTRICAL CHARACTERISTICS (Ta = 25°C, Unless otherwise specified) PARAMETER Input Voltage SYMBOL VIN TEST CONDITIONS MIN TYP Note1 -0.2 -0.15 -0.1 0.02 Line Regulation ΔVOUT VOUT 1.2V≤VOUT≤1.4V VIN=VOUT+1~VOUT+2 1.4V<VOUT≤2.0V IOUT=1mA 2.0V<VOUT<4.0V Load Regulation ΔVOUT VOUT IOUT=1mA~300mA -1 -1.5 -2.5 Quiescent Current IQ Dropout Voltage VD IOUT=1mA IOUT=300mA IOUT=0mA IOUT=300mA VOUT=VO(NOM)-2.0% Output Voltage Accuracy Power Supply Ripple Rejection Output Voltage Noise Output Current Current Limit Short Circuit Current (Note2) Ground Pin Current Over Temperature Shutdown Over Temperature Hysteresis Temperature Coefficient of Output Voltage EN Input Threshold EN Input Bias Current PSRR eN IOUT ILIMIT ISC IGND OTS OTH 1.2V≤VO(NOM)≤2.0V 2.4V<VO(NOM)≤2.8V f=100Hz IOUT=100mA f=1kHz COUT=2.2µF f=10kHz IOUT=10mA,COUT=2.2µF,f=10Hz~100kHz, VOUT>1.2V VOUT>1.2V VOUT<0.8V IOUT=1mA ~300mA UNIT V % % % 0.2 1 % 30 1.5 2.5 50 1300 400 % % µA mV mV dB dB dB µVRMS mA mA mA µA °C °C 60 50 20 30 300 300 TCVO VEH VEL IEH IEL ISD VSD MAX 6.5 0.2 0.15 0.1 450 150 35 150 30 300 30 VIN=2.7V~6.5V VIN=2.7V~6.5V VEN=VIN, VIN=2.7V~6.5V VEN=0V, VIN=2.7V~6.5V VIN=5V, VO=0V, VEN<VEL IO=0.4mA, VEN<VEL 2.0 0 ppm/°C VIN 0.4 0.1 0.5 1 0.4 V V µA µA µA V Shutdown Supply Current 0.5 Shutdown Output Voltage 0 Notes: 1. VIN(MIN) =VOUT +VD 2. To prevent the short circuit current protection feature from being prematurely activated, the input voltage must be applied before a current source load is applied. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-315.d L1183A Preliminary CMOS IC 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 5 of 5 QW-R502-315.d