AMS317
器件描述：1A LOW DROPOUT VOLTAGE REGULATOR
器件厂商：ADMOS [Advanced Monolithic Systems]
文件大小：78.75KB，共8页
Sponsor by e络盟器件资料摘要：
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced AMS317
Monolithic 1A LOW DROPOUT VOLTAGE REGULATOR
Systems
FEATURES APPLICATIONS
• Three Terminal Adjustable or Fixed Voltages* • High Efficiency Linear Regulators
1.8V, 2.5V, 2.85V, 3.3V and 5.0V • Post Regulators for Switching Supplies
• Output Current of 1A • 5V to 3.3V Linear Regulator
• Operates Down to 1V Dropout • Battery Chargers
• Line Regulation: 0.2% Max. • Active SCSI Terminators
• Load Regulation: 0.4% Max. • Power Management for Notebook
•TO-220, TO-263, TO-252 and SOT-223 package available • Battery Powered Instrumentation
GENERAL DESCRIPTION
The The AMS317 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate down
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 OPERATING JUNCTION
VOLTAGE 3 Lead TO-220 2 &3 Lead TO-263 TO-252 SOT-223 TEMPERATURE RANGE
ADJUSTABLE AMS317ACT AMS317ACM AMS317ACD AMS317A -40 to +125 ° C
AMS317CT AMS317CM AMS317CD AMS317 0 to 125 ° C
FIXED* AMS317ACT-X AMS317ACM-X AMS317ACD-X AMS317A-X -40 to +125 ° C
AMS317CT-X AMS317CM-X AMS317CD-X AMS317-X 0 to 125 ° C
X= 1.8V, 2.5V, 2.85V, 3.3V and 5.0V.
*For additional available fixed voltages contact factory.
PIN CONNECTIONS
FIXED VERSION ADJUSTABLE VERSION
1- Ground
2- V OUT
3- V IN
1 - Adjust
2- V OUT
3- V IN
SOT-223 Top View
1 2 3
TAB IS
OUTPUT
TO-252 FRONT VIEW
1
2
3
1
2
3TAB IS
OUTPUT
TO-263 FRONT VIEW
1
2
3TAB IS
OUTPUT
2L TO-263 FRONT VIEW
1
2
3
TAB IS
OUTPUT
TO-220 FRONT VIEW
Advanced AMS317
Monolithic 1A LOW DROPOUT VOLTAGE REGULATOR
Systems
FEATURES APPLICATIONS
• Three Terminal Adjustable or Fixed Voltages* • High Efficiency Linear Regulators
1.8V, 2.5V, 2.85V, 3.3V and 5.0V • Post Regulators for Switching Supplies
• Output Current of 1A • 5V to 3.3V Linear Regulator
• Operates Down to 1V Dropout • Battery Chargers
• Line Regulation: 0.2% Max. • Active SCSI Terminators
• Load Regulation: 0.4% Max. • Power Management for Notebook
•TO-220, TO-263, TO-252 and SOT-223 package available • Battery Powered Instrumentation
GENERAL DESCRIPTION
The The AMS317 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate down
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 OPERATING JUNCTION
VOLTAGE 3 Lead TO-220 2 &3 Lead TO-263 TO-252 SOT-223 TEMPERATURE RANGE
ADJUSTABLE AMS317ACT AMS317ACM AMS317ACD AMS317A -40 to +125 ° C
AMS317CT AMS317CM AMS317CD AMS317 0 to 125 ° C
FIXED* AMS317ACT-X AMS317ACM-X AMS317ACD-X AMS317A-X -40 to +125 ° C
AMS317CT-X AMS317CM-X AMS317CD-X AMS317-X 0 to 125 ° C
X= 1.8V, 2.5V, 2.85V, 3.3V and 5.0V.
*For additional available fixed voltages contact factory.
PIN CONNECTIONS
FIXED VERSION ADJUSTABLE VERSION
1- Ground
2- V OUT
3- V IN
1 - Adjust
2- V OUT
3- V IN
SOT-223 Top View
1 2 3
TAB IS
OUTPUT
TO-252 FRONT VIEW
1
2
3
1
2
3TAB IS
OUTPUT
TO-263 FRONT VIEW
1
2
3TAB IS
OUTPUT
2L TO-263 FRONT VIEW
1
2
3
TAB IS
OUTPUT
TO-220 FRONT VIEW