Advanced
Monolithic
Systems
AMS1117
1A LOW DROPOUT VOLTAGE REGULATOR
RoHS compliant
FEATURES
APPLICATIONS
• Three Terminal Adjustable or Fixed Voltages*
1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V
• Output Current of 1A
• High Efficiency Linear Regulators
• Post Regulators for Switching Supplies
• 5V to 3.3V Linear Regulator
• Battery Chargers
• Operates Down to 1V Dropout
• Line Regulation: 0.2% Max.
• Load Regulation: 0.4% Max.
• SOT-223, TO-252 and SO-8 package available
• Active SCSI Terminators
• Power Management for Notebook
• Battery Powered Instrumentation
GENERAL DESCRIPTION
The AMS1117 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 AMS1117 devices are pin compatible with other three-terminal SCSI regulators and are offered in the low profile surface
mount SOT-223 package, in the 8L SOIC package and in the TO-252 (DPAK) plastic package.
ORDERING INFORMATION:
PACKAGE TYPE
SOT-223
OPERATING JUNCTION
TEMPERATURE RANGE
TO-252
8L SOIC
AMS1117CD
AMS1117
AMS1117CS
-40 to 125° C
-40 to 125° C
-40 to 125° C
-40 to 125° C
-40 to 125° C
-40 to 125° C
-40 to 125° C
AMS1117CD-1.5 AMS1117-1.5
AMS1117CD-1.8 AMS1117-1.8
AMS1117CD-2.5 AMS1117-2.5
AMS1117CD-2.85 AMS1117-2.85
AMS1117CD-3.3 AMS1117-3.3
AMS1117CD-5.0 AMS1117-5.0
AMS1117CS-1.5
AMS1117CS-1.8
AMS1117CS-2.5
AMS1117CS-2.85
AMS1117CS-3.3
AMS1117CS-5.0
8L SOIC Top View
1
2
3
4
8
7
6
5
GND/ADJ
VOUT
N/C
VOUT
VOUT
VOUT
N/C
*For additional available fixed voltages contact factory.
VIN
PIN CONNECTIONS
SOT-223 Top View
TO-252 FRONT VIEW
3 PIN FIXED/ADJUSTABLE
VERSION
3
2
1
TAB IS
OUTPUT
1- Ground/Adjust
2- VOUT
1
2
3
3- VIN
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723