DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 4

Technical content

UNISONIC TECHNOLOGIES CO., LTD L1183B CMOS IC www.unisonic.com.tw 1 of 4 Copyright © 2013 Unisonic Technologies Co., Ltd QW-R502-422.C 300mA CMOS LDO  DESCRIPTION The UTC L1183B is a positive, linear regulator. One of the feature is the very low ground current typically as low as 30 μA, and the dropout voltage is extremely low. For stable operation, the output capacitance value should be 2.2μF or more. The internal circuit includes thermal shutdown and current fold-back device to prevent device failure when the circuit is operated in bad conditions. The UTC L1183B is generally suitable for applications, such as instrumentation, portable electr onics, wireless devices, cordless phones, PC peripherals, battery powered widgets.  FEATURES * Very Low Dropout Voltage * Guaranteed Output Current: 300mA * Quiescent Current: 30μA (TYP.) * Typical Accuracy Within 2% * Over-Temperature Shutdown * Current Limiting * Short Circuit Current Fold-Back * Power Good Detector (6 pin version only) * Power-Saving Shutdown Mode * Adjustable Output Voltages * Low Temperature Coefficient * RoHS-Compliant Product SOT-26  ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free L1183BG-xx-AG6-R L1183BG-xx-AG6-R SOT-26 Tape Reel Note: xx: Output Voltage, refer to Marking Information.

UNISONIC TECHNOLOGIES CO., LTD 2 of 4 www.unisonic.com.tw Q W - R 5 0 2 - 4 2 2 . C  MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING SOT-26 12 :1.2V 15 :1.5V 28 :2.8V 31 :3.1V 33 :3.3V SXXBG 123 456 Voltage Code G: Halogen Free L: Lead Free  PIN CONFIGURATION  PIN DESCRIPTION PIN NO PIN NAME DESCRIPTION

1 V IN Input voltage pin

2 GND Ground connection pin

3 EN Enable pin

4 PG Power-Good output

5 ADJ Feedback output voltage for adjustable device

6 V OUT LDO voltage regulator output pin

 BLOCK DIAGRAM GND ADJ AMP Vref=1.2V PG VREF×110% VREF×90% Thermal Shutdown IN EN OUT Overcurrent Shutdown

UNISONIC TECHNOLOGIES CO., LTD 3 of 4 www.unisonic.com.tw Q W - R 5 0 2 - 4 2 2 . C  ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage V IN 8 V Input, Output Voltage GND - 0.3 ~ V IN + 0.3 V Output Current I OUT P D / (VIN - VOUT) mA Power Dissipation P D 400 mW Operating Temperature T OPR -40 ~ +85 °C Junction Temperature T J -40 ~ +125 °C Notes: 1. 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. 2. Caution: Stress above t he listed absolute maximum rating may cause permanent damage to the device.  THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θJA 280 °C/W Junction to Case θJC 140  ELECTRICAL CHARACTERISTICS (TA = 25°C, VIN=5V unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage V IN Note 7 V Output Voltage V OUT I OUT=1mA -3 3 % Dropout Voltage V D IOUT=300mA VOUT=VONOM -2.0% 1.2V≤VO(NOM) ≤2.0V 1300 mV 2.0V<VO(NOM) ≤2.8V 400 2.8V<VO(NOM)<3.8V 300 Output Current I OUT V OUT>1.2V 300 mA Current Limit I LIMIT V OUT>1.2V 300 450 mA Short Circuit Current I SC V OUT<0.8V 150 300 mA Quiescent Current I Q I OUT=0mA 30 50 μA Ground Pin Current I GND I OUT=1mA ~ 300mA 35 μA Line Regulation REG LINE IOUT=5mA VIN=VO+1 ~ VO+2 VOUT < 2.0V 0.15 % VOUT ≥ 2.0V 0.02 0.1 % Load Regulation REG LOAD I OUT=1mA ~ 300mA 0.2 1 % Over Temperature Shutdown OTS 150 °C Over Temperature Hysterisis OTH 30 °C VO Temperature Coefficient TC 30 ppm/°C Power Supply Rejection PSRR IOUT=100mA CO=2.2μF f=1kHz 50 dB f=10kHz 20 f=100kHz 15 Output Voltage Noise e N f=10Hz ~ 100kHz IO=10mA,CBYP=0μF CO=2.2μF 30 μVrms ADJ Input Bias Current I ADJ 1 μA ADJ Reference Voltage V REF 1.176 1.2 1.224 V EN Input Threshold VEH V IN=2.7V ~ 7V 2.0 V IN V VEL V IN=2.7V ~ 7V 0 0.4 V EN Input Bias Current IEH V EN=VIN, VIN=2.7V ~ 7V 0.1 μA IEL V EN=0V, VIN=2.7V ~ 7V 0.5 μA Shutdown Supply Current I SD V IN=5V, VO=0V, VEN<VEL 0.5 1 μA Shutdown Output Voltage V OUT,SD I O=35μA,VEN<VEL 0 0.1 V Output Under Voltage V UV 85 %V O(NOM) Output Over Voltage V OV 115 %V O(NOM) PG Leakage Current I LC V PG=7V 1 μA PG Voltage Rating V PG V O in regulation 7 V PG Voltage Low V OL I SINK=0.4mA 0.4 V Note: VIN(MIN)=VOUT+VD

UNISONIC TECHNOLOGIES CO., LTD 4 of 4 www.unisonic.com.tw Q W - R 5 0 2 - 4 2 2 . C  ADVANCED APPLICATION VIN=3.3V 100µ 100K PG EN GND ADJ VOUT VIN 1µ 100 100µ 10K VO=1.2V  TYPICAL APPLICATION CIRCUIT IN GND ADJ OUT IN OUT 2.2µF 100p 1µF EN PG VOUT= 1.2 (R1 +R2)/R2 C2 is unnecessary when R1 or R2 < 20K PG pin is only available in the SOT-26 package option EN 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.