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UNISONIC TECHNOLOGIES CO., LTD L1183B
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 30A, and the dropout voltage is extremely low. For stable operation, the output capacitance value should be 2.2F 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 electronics, wireless devices, cordless phones, PC peripherals, battery powered widgets.
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Preliminary
CMOS IC
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FEATURES
* Very Low Dropout Voltage * Guaranteed Output Current: 300mA * Quiescent Current: 30A (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 L1183BG-XX-AG6-R SOT-26 Note: xx: Output Voltage, refer to Marking Information. Packing Tape Reel
www.unisonic.com.tw Copyright (c) 2010 Unisonic Technologies Co., Ltd
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L1183B
MARKING INFORMATION
PACKAGE VOLTAGE CODE 12 :1.2V 15 :1.5V 28 :2.8V 31 :3.1V 33 :3.3V
Preliminary
CMOS IC
MARKING 65 Voltage Code 4
SOT-26
SXXBG 1 2 3
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO 1 2 3 4 5 6 PIN NAME VIN GND EN PG ADJ VOUT DESCRIPTION Input voltage pin Ground connection pin Enable pin Power-Good output Feedback output voltage for adjustable device LDO voltage regulator output pin
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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L1183B
BLOCK DIAGRAM
IN
Preliminary
CMOS IC
Thermal Shutdown
Overcurrent Shutdown
EN OUT + AMP + ADJ + VREFx90% Vref=1.2V GND
VREFx110% PG
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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L1183B
ABSOLUTE MAXIMUM RATING
PARAMETER Input Voltage Input, Output Voltage Output Current Power Dissipation
Preliminary
CMOS IC
SYMBOL VIN IOUT PD
RATINGS 8 GND - 0.3 ~ VIN + 0.3 PD / (VIN - VOUT) 400
UNIT V V mA mW
Ambient Operating Temperature TOPR -40 ~ +85 C Junction Temperature TJ -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 the listed absolute maximum rating may cause permanent damage to the device.
THERMAL DATA
PARAMETER Junction to Ambient Junction to Case SYMBOL JA JC RATINGS 140 280 UNIT C/W
ELECTRICAL CHARACTERISTICS (TA = 25C, VIN=5V unless otherwise specified)
PARAMETER Input Voltage Output Voltage Dropout Voltage Output Current Current Limit Short Circuit Current Quiescent Current Ground Pin Current Line Regulation Load Regulation Over Temperature Shutdown Over Temperature Hysterisis VO Temperature Coefficient Power Supply Rejection Output Voltage Noise ADJ Input Bias Current ADJ Reference Voltage EN Input Threshold EN Input Bias Current Note: VIN(min)=VOUT+VD SYMBOL VIN VOUT VD IOUT ILIMIT ISC IQ IGND REGLINE REGLOAD OTS OTH TC PSRR eN IADJ VREF VEH VEL IEH IEL TEST CONDITIONS IOUT=1mA 1.2VVO(NOM) 2.0V IOUT=300mA VOUT=VONOM 2.0V1.2V VOUT>1.2V VOUT<0.8V IOUT=0mA IOUT=1mA ~ 300mA IOUT=5mA VOUT < 2.0V VIN=VO+1 ~ VO+2 VOUT 2.0V IOUT=1mA ~ 300mA MIN Note -3 TYP MAX 7 3 1300 400 300 450 150 30 35 UNIT V % mV
300 300
IOUT=100mA CO=2.2F f=10Hz ~ 100kHz IO=10mA,CBYP=0F
f=1kHz f=10kHz f=100kHz Co=2.2F 1.176 2.0 0
mA mA 300 mA 50 A A 0.15 % 0.02 0.1 % 0.2 1 % 150 C 30 C 30 ppm/C 50 dB 20 15 30 1 1.2 1.224 VIN 0.4 0.1 0.5 Vrms A V V V A A
VIN=2.7V ~ 7V VIN=2.7V ~ 7V VEN=VIN, VIN=2.7V ~ 7V VEN=0V, VIN=2.7V ~ 7V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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PARAMETER Shutdown Supply Current Shutdown Output Voltage Output Under Voltage Output Over Voltage PG Leakage Current PG Voltage Rating PG Voltage Low SYMBOL ISD VOUT,SD VUV VOV ILC VPG VOL
Preliminary
TEST CONDITIONS VIN=5V, VO=0V, VENCMOS IC
TYP MAX UNIT 0.5 1 A 0.1 V 85 %VO(NOM) %VO(NOM) 1 A 7 V 0.4 V
ELECTRICAL CHARACTERISTICS (Cont.)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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ADVANCED APPLICATION
VIN=3.3V
Preliminary
CMOS IC
100K VIN PG 100 VOUT 1 100 VO=1.2V
EN GND
ADJ 100 10K
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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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
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