GM1117-1.8TA3T PDF预览

GM1117-1.8TA3T

更新时间: 2025-07-16 03:39:35
品牌 Logo 应用领域
GAMMA 稳压器
页数 文件大小 规格书
13页 228K
描述
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS

GM1117-1.8TA3T 数据手册

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Power Management  
A
MICROELECTRONICS  
GM1117  
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS  
Features  
Description  
Adjustable or Fixed Output  
GM1117 of positive adjustable and fixed regulators is de-  
signed to provide 1.0A output with low dropout voltage per-  
formance. On-chip trimming adjusts the reference voltage  
to 1%. For usage on working in post regulators or micro-  
processor power supplies, low voltage operation and fast  
transient response are required.  
Output Current of 1.0A  
Dropout Voltage (Typical) 1.15V @ 1.0A  
Line Regulation 0.2% max.  
Load Regulation 0.4% max.  
Fast Transient Response  
Pin-to-pin compatible with the LT1086 family of regulators,  
GM1117 is available in surface-mount SOT-223 and TO-  
252 packages.  
Current Limit Protection  
Thermal Shutdown Protection  
Application  
Hard Drive Controllers  
Battery Chargers  
High Efficiency Linear Regulators  
Post Regulators for Switching Supplies  
Microprocessor Supply  
Adjustable Power Supply  
TYPICAL APPLICATION CIRCUITS  
(Adjustable Version)  
(Fixed Version)  
GM1117-Adj  
GM1117-3.3  
V
IN  
> 4.75V  
V > 4.75V  
IN  
V
OUT  
= 3.45V  
V
= 3.3V  
OUT  
3
3
2
2
V
V
V
V
OUT  
OUT  
IN  
IN  
R1  
GND  
ADJ  
1
133W  
1.0%  
1
+
+
+
+
C1  
C2  
C1  
C2  
10µF  
Tant. Min  
10µF  
Tant  
10µF  
10µF  
Tant  
R2  
Tant. Min  
232W  
1.0%  
R2  
R1  
V
OUT  
= V  
REF  
X (1 +  
) + I  
X R2  
ADJ  
Notes:  
1. C1 neededif device isfar from filter capacitors  
2. C2 minimumvalue required forstability  
www.gammamicro.com  
1

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