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Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS1085CT
Monolithic
3A LOW DROPOUT VOLTAGE REGULATOR
Systems
FEATURES APPLICATIONS
••
Three Terminal Adjustable or Fixed Voltages
••
High Efficiency Linear Regulators
1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
••
Post Regulators for Switching Supplies
••
Output Current of 3A
••
Microprocessor Supply
••
Operates Down to 1V Dropout
••
Battery Chargers
••
Load Regulation: 0.1%
••
Constant Current Regulators
••
Line Regulation: 0.015%
••
Notebook/Personal Computer Supplies
••
TO-220, TO-263 and TO-252 packages available
••
Portable Instrumentation
GENERAL DESCRIPTION
The AMS1085 series of adjustable and fixed voltage regulators are designed to provide 3A output current and to operate
down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V 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 AMS1085 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package, 3
and 2 lead TO-263 (Plastic DD) and TO-252 (D PAK) package.
ORDERING INFORMATION:
PACKAGE TYPE OPERATING JUNCTION
3 LEAD TO-220 2&3 LEAD TO-263 TO-252 TEMPERATURE RANGE
AMS1085CT AMS1085CM AMS1085CD 0 to 125
°
C
AMS1085CT-1.5 AMS1085CM-1.5 AMS1085CD-1.5
0 to 125
°
C
AMS1085CT-2.5 AMS1085CM-2.5 AMS1085CD-2.5
0 to 125
°
C
AMS1085CT-2.85 AMS1085CM-2.85 AMS1085CD-2.85
0 to 125
°
C
AMS1085CT-3.0 AMS1085CM-3.0 AMS1085CD-3.0
0 to 125
°
C
AMS1085CT-3.3 AMS1085CM-3.3 AMS1085CD-3.3
0 to 125
°
C
AMS1085CT-3.5 AMS1085CM-3.5 AMS1085CD-3.5
0 to 125
°
C
AMS1085CT-5.0 AMS1085CM-5.0 AMS1085CD-5.0 0 to 125
°
C
PIN CONNECTIONS
FIXED VERSION
ADJUSTABLE VERSION
1- Ground
2- V
OUT
3- V
IN
1 - Adjust
2- V
OUT
3- V
IN
TAB IS
OUTPUT
TO-252 FRONT VIEW
1
2
3
1
2
3
TAB IS
OUTPUT
2L TO-263 FRONT VIEW
1
2
3
TAB IS
OUTPUT
TO-220 FRONT VIEW
1
2
3
TAB IS
OUTPUT
3L TO-263 FRONT VIEW
2 1