Advanced
Monolithic
Systems
FEATURES
•
Three Terminal Adjustable or Fixed Voltages*
1.8V, 2.5V, 2.85V, 3.3V and 5.0V
•
Output Current of 1A
•
Operates Down to 1V Dropout
•
Line Regulation: 0.2% Max.
•
Load Regulation: 0.4% Max.
•
TO-220, TO-263, TO-252 and SOT-223 package available
AMS317
1A LOW DROPOUT VOLTAGE REGULATOR
APPLICATIONS
•
High Efficiency Linear Regulators
•
Post Regulators for Switching Supplies
•
5V to 3.3V Linear Regulator
•
Battery Chargers
•
Active SCSI Terminators
•
Power Management for Notebook
•
Battery Powered Instrumentation
GENERAL DESCRIPTION
The AMS317 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate down
The
to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V at maximum output
current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload
conditions on both the regulator and power source circuitry.
The AMS317 devices are pin compatible with other three-terminal regulators and are offered in 3 lead TO-220 package, in
the 2 & 3 Lead TO-263 (Plastic DD), in the TO-252 (D PAK) and in the low profile surface mount SOT-223 package.
ORDERING INFORMATION:
OUTPUT
PACKAGE TYPE
TO-252
AMS317ACD
AMS317CD
AMS317ACD-X
AMS317CD-X
SOT-223
AMS317A
AMS317
AMS317A-X
AMS317-X
OPERATING JUNCTION
TEMPERATURE RANGE
-40 to +125° C
0 to 125° C
-40 to +125° C
0 to 125° C
3 Lead TO-220 2 &3 Lead TO-263
VOLTAGE
ADJUSTABLE AMS317ACT
AMS317ACM
AMS317CT
AMS317CM
FIXED*
AMS317ACT-X
AMS317ACM-X
AMS317CT-X
AMS317CM-X
X= 1.8V, 2.5V, 2.85V, 3.3V and 5.0V.
*For additional available fixed voltages contact factory.
PIN CONNECTIONS
FIXED VERSION
1- Ground
2- V
OUT
3- V
IN
ADJUSTABLE VERSION
SOT-223 Top View
TO-263 FRONT VIEW
3
2
1
TAB IS
OUTPUT
1- Adjust
2- V
OUT
3- V
IN
TO-220 FRONT VIEW
TAB IS
OUTPUT
1
2
3
TO-252 FRONT VIEW
3
2
1
2L TO-263 FRONT VIEW
3
2
1
3
TAB IS
OUTPUT
2
1
TAB IS
OUTPUT
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
ADMOS [ ADVANCED MONOLITHIC SYSTEMS ]
