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UNISONIC TECHNOLOGIES CO., LTD L1183A Preliminary CMOS IC www.unisonic.com.tw 1 of 6 Copyright © 2014 Unisonic Technologies Co., Ltd QW-R502-315.k 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 30 μA and its dropout voltage is extremely low with 300mA output current. The internal circuit includes 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.  FEATURES * Accurate To Within 1.5% * Quiescent Current: 30μA * With Current Limiting * Internal Short Circuit Current Fold-Back * Has Power-Saving Shutdown Mode * Very Low Temperature Coefficient  ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free L1183AL-xx-AF5-R L1183AG-xx-AF5-R SOT-25 Tape Reel L1183AL-xx-AG6-R L1183AG-xx-AG6-R SOT-26 Tape Reel Note: xx: Output Voltage, refer to Marking Information. (1) R: Tape Reel (2) AF5: SOT-25, AG6: SOT-26 (3) xx: Refer to Marking Information (4) L: Lead Free, G: Halogen Free L1183AL-xx-AF5-R (1) Packing Type (2) Package Type (3) Output Voltage Code (4) Lead Free

L1183A Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 2 of 6 www.unisonic.com.tw QW-R502-315.k  MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING SOT-25 12:1.2V 15 :1.5V 18:1.8V 25:2.5V 28 :2.8V 30: 3.0V 31 :3.1V 33 :3.3V 50:5.0V SOT-26 SXXA□ 123 456 Voltage Code G: Halogen Free L: Lead Free  PIN CONFIGURATION  PIN DESCRIPTION PACKAGE PIN NO. PIN NAME DESCRIPTION SOT-25 1 V IN Input for voltage input. A 1µF or gr eater capacitor should be placed in this pin. 2 GND Ground. 3 EN Enable pin. Pulling his pin low, can shut down the PMOS pass transistor, and the current consuming can be set less than 1µA. 4 NC

5 V OUT

Output voltage pin. The capacitor which connected between this pin and GND should be decoupled with a 2.2µF or a greater value low ESR ceramic capacitor. SOT-26 1 SENSE Remote Sense. 2 GND Ground. 3 BYP Bypass capacitor for noise reduction. 4 EN Enable Input. 5 V DD Supply Input. 6 V OUT Output Voltage.

L1183A Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 3 of 6 www.unisonic.com.tw QW-R502-315.k  BLOCK DIAGRAM Overcurrent Shutdown AMP GND VOUT VREF=1.215V EN NC VIN

L1183A Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 4 of 6 www.unisonic.com.tw QW-R502-315.k  ABSOLUTE MAXIMUM RATING (Unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Input Voltage V IN -0.3~ +6.5 V Input Voltage (EN,BYP) -0.3~ +6.5 V Output Voltage V OUT -0.3~ V IN+0.3 V Output Current I OUT 300 mA Power Dissipation P D 400 mW 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 SYMBOL RATINGS UNIT Ambient Temperature T A - 40 ~ +85 °C Junction Temperature T J 150 °C Storage Temperature T STG -65 ~ +150 °C  THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θJA 280 °C/W Junction to Case (Note) θJC 140 °C/W Note: θJC on center of molding compound if IC has on tab.

L1183A Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 5 of 6 www.unisonic.com.tw QW-R502-315.k  ELECTRICAL CHARACTERISTICS (TA = 25°C, Unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage V IN Note1 6.5 V Line Regulation OUT OUT V VIN=VOUT+1~VOUT+2 IOUT=1mA VIN=VOUT+1~VOUT+1.5V IOUT=1mA VOUT=5.0V -0.1 0.02 0.1 % Load Regulation OUT OUT V V∆ IOUT=1mA~300mA -1 0.2 1 % Output Voltage Accuracy IOUT=1mA -1.5 1.5 % IOUT=300mA -2.5 2.5 % Quiescent Current I Q I OUT=0mA 30 50 µA Dropout Voltage V D IOUT=300mA VOUT=VO(NOM)-2.0% 1.2V≤VO(NOM)≤2.0V 1300 mV2.4V<VO(NOM)≤2.8V 400 2.8V<VO(NOM)≤5.0V 300 Power Supply Ripple Rejection PSRR IOUT=100mA COUT=2.2µF f=100Hz 60 dB f=1kHz 50 dB f=10kHz 20 dB Output Voltage Noise eN I OUT=10mA,COUT=2.2µF,f=10Hz~100kHz 30 µV RMS Output Current I OUT V OUT>1.2V 300 mA Current Limit I LIMIT V OUT>1.2V 300 450 mA Short Circuit Current (Note2) I SC V OUT<0.8V 150 300 mA Ground Pin Current I GND I OUT=1mA ~300mA 35 µA Temperature Coefficient of Output Voltage TCVO 30 ppm/°C EN Input Threshold VEH V IN=2.7V~6.5V 2.0 V IN V VEL V IN=2.7V~6.5V 0 0.4 V EN Input Bias Current IEH V EN=VIN, VIN=2.7V~6.5V 2.0 µA IEL V EN=0V, VIN=2.7V~6.5V 0.5 µA Shutdown Supply Current I SD V IN=6.5V, VO=0V, VEN<VEL 0.5 1 µA Shutdown Output Voltage V SD I O=0.4mA, VEN<VEL 0 0.4 V Notes: 1. VIN(MIN) =VOUT +VD 2. To prevent the short circuit curr ent protection feature from being prematurely activa ted, the input voltage must be applied before a current source load is applied. Notes: 1. VIN(MIN) =VOUT +VD. 2. To prevent the short circuit curr ent protection feature from being prematurely activa ted, the input voltage must be applied before a current source load is applied.

L1183A Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 6 of 6 www.unisonic.com.tw QW-R502-315.k  TYPICAL APPLICATION CIRCUIT INPUT 1µF GND VIN VOUT OUTPUT 2.2µF NC EN L1183A 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.