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| UNISONIC TECHNOLOGIES CO., LTD L1183A 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 30A 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 2.2F 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. Preliminary CMOS IC FEATURES * Accurate To Within 1.5% * Quiescent Current: 30A * 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 L1183AG-xx-AF5-R L1183AG-XX-AG6-R Package SOT-25 SOT-26 Packing Tape Reel Tape Reel Note: xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright (c) 2010 Unisonic Technologies Co., Ltd 1 of 5 QW-R502-315.e L1183A MARKING INFORMATION PACKAGE VOLTAGE CODE Preliminary CMOS IC MARKING 3 2 1 SOT-25 12 :1.2V 15 :1.5V 28 :2.8V 31 :3.1V 33 :3.3V Voltage Code SXXAG 4 5 SOT-26 PIN CONFIGURATION VIN 1 GND 2 EN 3 5 VOUT 4 NC SOT-25 SOT-26 PIN DESCRIPTION PACKAGE PIN NO. 1 2 SOP-25 3 4 5 1 2 SOP-26 3 4 5 6 PIN NAME VIN GND EN NC VOUT SENSE GND BYP EN VDD VOUT Output voltage pin. The capacitor which connected between this pin and GND should be decoupled with a 1F or a greater value low ESR ceramic capacitor. Remote Sense. Ground. Bypass capacitor for noise reduction. Enable Input. Supply Input. Output Voltage. DESCRIPTION Input for voltage input. A 1F 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 1A. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-315.e L1183A BLOCK DIAGRAM VIN Preliminary CMOS IC 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.e L1183A ABSOLUTE MAXIMUM RATING Preliminary CMOS IC 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 SYMBOL Ta TJ TSTG SYMBOL JA JC RATINGS - 40~ +85 - 40~ +125 -65~ +125 RATINGS 280 140 UNIT C C C UNIT C/W C/W THERMAL DATA PARAMETER Junction to Ambient Junction to Case (Note) Note: JC on center of molding compound if IC has on tab ELECTRICAL CHARACTERISTICS (Ta = 25C, Unless otherwise specified) PARAMETER Input Voltage Line Regulation Load Regulation Output Voltage Accuracy Quiescent Current Dropout Voltage 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 IQ VD PSRR eN IOUT ILIMIT ISC IGND OTS OTH TCVO VEH VEL IEH IEL ISD VSD 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 TEST CONDITIONS 1.2VVOUT1.4V VIN=VOUT+1~VOUT+2 1.4V MAX 6.5 0.2 0.15 0.1 1 1.5 2.5 50 1300 400 UNIT V % % % % % % A mV mV dB dB dB VRMS mA mA mA A C C ppm/C 1.2VVO(NOM)2.0V 2.4V 60 50 20 30 300 300 450 150 35 150 30 30 VIN 0.4 0.1 0.5 1 0.4 300 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. V V A A A V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-315.e L1183A TYPICAL APPLICATION CIRCUIT Preliminary 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 5 of 5 QW-R502-315.e |
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