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L1131C Dataheets PDF



Part Number L1131C
Manufacturers UTC
Logo UTC
Description LOW NOISE 150mA LDO REGULATOR
Datasheet L1131C DatasheetL1131C Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD L1131C Preliminary LOW NOISE 150mA LDO REGULATOR CMOS IC „ DESCRIPTION The UTC L1131C is a typical LDO (linear regulator) with the features of High output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection. During normal operation of UTC L1131C, the dropout voltage is very low, and the response of line transient and load transient are very well. Inside each UTC L1131C, there’re many functions which can be seen in the block figu.

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UNISONIC TECHNOLOGIES CO., LTD L1131C Preliminary LOW NOISE 150mA LDO REGULATOR CMOS IC „ DESCRIPTION The UTC L1131C is a typical LDO (linear regulator) with the features of High output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection. During normal operation of UTC L1131C, the dropout voltage is very low, and the response of line transient and load transient are very well. Inside each UTC L1131C, there’re many functions which can be seen in the block figure, for example, a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit. The UTC L1131C can be used as an ideal of power source for hand-held communication equipment, such as cameras, VCRs, camcorders and other battery-powered equipment. „ FEATURES * Ultra Supply Current: 75µA(typ.) * Standby Mode: 0.1µA(typ.) * Very Low Dropout Voltage: 0.28V(typ.) @IOUT=150mA, VOUT=2.5V * Ripple Rejection: 70dB(typ.)@f=1kHz 60dB(typ.)@f=10kHz * Temperature-Drift Coefficient of Output Voltage: ±100ppm/°C(typ.) * Well Line Regulation: 0.02%/V(typ.) * Output Voltage Accuracy: ±2.0%(typ.) * Internal Fold Back Protection Circuit * CIN=COUT=1µF or more (Ceramic capacitors) are recommended to be used with this IC * Halogen Free „ ORDERING INFORMATION Ordering Number L1131CG-xx-AF5-R Note: Pin Assignment: I:VIN O:VOUT Package SOT-25 G:GND C:CE 1 I N:NC Pin Assignment 234 GCN 5 O Packing Tape Reel www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-308.b L1131C Preliminary „ MARKING PACKAGE VOLTAGE CODE SOT-25 20:2.0V 25:2.5V MARKING 321 HXXCG 45 Voltage Code „ PIN DESCRIPTION PIN NO 1 2 3 4 5 PIN NAME VIN GND CE NC VOUT DESCRIPTION Input pin Ground pin Input pin for chip enable, “high” means enable the chip. No connection Output pin CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-308.b L1131C „ BLOCK DIAGRAM VIN CE Preliminary + Reference Voltage Current Limit CMOS IC VOUT GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-308.b L1131C Preliminary CMOS IC „ ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 6.5 V Input Voltage (CE Pin) Output Voltage VCE VOUT 6.5 −0.3~VIN+0.3 V V Output Current IOUT 200 mA Power Dissipation Junction Temperature PD 420 mW TJ +125 °С Operating Temperature TOPR −40 ~ +85 °С Storage Temperature TSTG −55 ~ +125 °С 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. „ ELECTRICAL CHARACTERISTICS L1131C-2.0V PARAMETER Output Voltage Input Voltage Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Input Voltage Output Noise CE Pull-down Resistance High Low Ripple Rejection Dropout Voltage Line Regulation Output Voltage Temperature Coefficient On Resistance of Nch for Auto Discharge SYMBOL TEST CONDITIONS VOUT VIN ΔVOUT ΔIOUT VIN = Set VOUT+1V 1mA ≤ IOUT ≤30mA VIN = Set VOUT+1V 1mA ≤ IOUT≤ 150mA IOUT VIN−VOUT = 1.0V ISS VIN = Set VOUT+1V, IOUT = 0mA IST-BY VIN= Set VOUT+1V VCE = GND ILIMIT VOUT = 0V VCEH VCEL eN BW = 10Hz ~ 100kHz RPD RR Ripple 0.5Vp−p f=1kHz VIN−VOUT = 1.0V, IOUT = 30mA f=10kHz VD ΔVOUT ΔVIN ΔVOUT ΔT IOUT=150mA Set VOUT+0.5V ≤VIN≤6.0V, IOUT=30mA IOUT = 30mA −40°C ≤ TOPR ≤85°C RLOW VCE = 0V MIN TYP MAX UNIT 1.96 2.04 V 6.0 V 22 40 mV 150 mA 75 95 μA 0.1 1.0 μA 40 mA 1.5 VIN V 0.0 0.3 V 30 µVrms 0.7 2.0 8.0 MΩ 70 dB 60 dB 0.32 0.55 V 0.02 0.10 %/V ±100 60 ppm/°С Ω UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R502-308.b L1131C Preliminary CMOS IC „ ELECTRICAL CHARACTERISTICS(Cont.) L1131C-2.5V PARAMETER Output Voltage Input Voltage Load Regulation Output Current Supply Current Supply Current (Standby) Short Current Limit CE Input Voltage Output Noise CE Pull-down Resistance High Low Ripple Rejection Dropout Voltage Line Regulation Output Voltage Temperature Coefficient On Resistance of Nch for Auto Discharge SYMBOL TEST CONDITIONS VOUT VIN = Set VOUT+1V 1mA ≤ IOUT ≤30mA VIN ΔVOUT ΔIOUT VIN = Set VOUT+1V 1mA ≤ IOUT≤ 150mA IOUT VIN−VOUT = 1.0V ISS VIN = Set VOUT+1V, IOUT = 0mA IST-BY VIN= Set VOUT+1V VCE = GND ILIMIT VOUT = 0V VCEH VCEL eN BW = 10Hz ~ 100kHz RPD RR Ripple 0.5Vp−p f=1kHz VIN−VOUT = 1.0V, IOUT = 30mA f=10kHz VD ΔVOUT ΔVIN ΔVOUT ΔT IOUT=150mA Set VOUT+0.5V ≤VIN≤6.0V IOUT = 30mA IOUT = 30mA −40°C ≤ TOPR ≤85°C MIN 2.45 150 1.5 0.0 0.7 TYP 22 75 0.1 40 30 2.0 70 60 0.28 0.02 ±100 MAX UNIT 2.55 V 6.0 V 40 mV 95 1.0 VIN 0.3 8.0 0.50 mA μA μA mA V V µVrms MΩ dB dB V 0.10 %/V ppm/°С RLOW VCE = 0V 60 Ω UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-308.b L1131C „ TEST CIRCUIT IN ISS 1.0µF Preliminary VIN VOUT CE UTC L1131C-xx GND CMOS IC OUT 1.0µF „ TYPI.


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