器件名称: LM1117-3.3
功能描述: 1A Low Dropout Positive Voltage Regulator
文件大小: 185.11KB 共4页
简 介:CYStech Electronics Corp.
1A Low Dropout Positive Voltage Regulator
Spec. No. : C506L3 Issued Date : 2003.03.22 Revised Date :2005.10.07 Page No. : 1/4
LM1117L3
Features
Adjustable or Fixed Output Output Current of 1A ●Low Dropout, 1.3V max at 1A Output Current ●0.04% Line Regulation ●0.2% Load Regulation ●100% Thermal Limit Burn-in ●Fast Transient Response
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Description
The LM1117 series of positive adjustable and fixed regulators are designed to provide 1A with high efficiency. All internal circuitry is designed to operate down to 1.3V input to output differential. On-chip trimming adjusts the reference voltage to 1%.
Applications
High Efficiency Linear Regulators ● Post Regulators for Switching Supplies ● Adjustable Power Supply
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Typical Application Data
Fixed Voltage Regulator
VIN>4.75V
3
IN
TAB OUT GND
2
VOUT=3.3V
C1 10μF Tant
1
+
C2 10μF Tant.Min
Adjustable Voltage Regulator
VIN>4.75V IN C1 10μF, Tant
TAB
VOUT=3.45V
OUT
+
ADJ
+
C2 10μF Tant.Min R2 232 Ohm,1%
VOUT=VREF×(1+R2/R1)+IADJ×R2
Notes: 1) C1 needed if device is far from filter capacitors 2) C2 minimum value required for stability
LM1117L3
CYStek Product Specification
CYStech Electronics Corp.
Package Information
Pin 1 2 3 Function ADJ/GND OUTPUT INPUT
Spec. No. : C506L3 Issued Date : 2003.03.22 Revised Date :2005.10.07 Page No. : 2/4
1
2
3
SOT-223
Absolute Maximum Ratings
Symbol PD VIN TJ TSTG TLEAD Parameter Power Dissipation Input Voltage Operating Junction Temperature Range Co……
