参数资料
型号: GM1117-3.3TA3R
厂商: American Power Management Inc.
英文描述: 1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
中文描述: 安培率低压差线性稳压精度
文件页数: 1/13页
文件大小: 190K
代理商: GM1117-3.3TA3R
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Microprocessor Supply
Description
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.
Pin-to-pin compatible with the LT1086 family of regulators,
GM1117 is available in surface-mount SOT-223 and TO-
252 packages.
Application
Features
Adjustable or Fixed Output
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
Current Limit Protection
Thermal Shutdown Protection
TYPICAL APPLICATION CIRCUITS
Hard Drive Controllers
Battery Chargers
Adjustable Power Supply
(Adjustable Version)
VOUT
GND
VIN
GM1117-3.3
(Fixed Version)
G
M
1
7
V
0
.1
www.gammamicro.com
1
+
C1
10F
Tant
C2
10F
Tant. Min
V
= 3.3V
OUT
V > 4.75V
IN
VOUT
ADJ
VIN
+
C1
10F
Tant
C2
10F
Tant. Min
V
= 3.45V
OUT
V > 4.75V
IN
GM1117-Adj
R1
133W
1.0%
R2
232W
1.0%
2
3
1
2
3
1
Notes:
1. C1 needed if device is far from filter capacitors
2. C2 minimum value required for stability
V
R2
=
X (1 +
) + I
X
OUT
REF
ADJ
R2
R1
A
MICROELECTRONICS
GM1117
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
Power Management
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