Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
Advanced AMS1117
Monolithic 1A LOW DROPOUT VOLTAGE REGULATOR
Systems
FEATURES APPLICATIONS
•• Three Terminal Adjustable or Fixed Voltages* •• High Efficiency Linear Regulators
1.5V, 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
•• SOT-223, TO-252 and SO-8 package available •• Battery Powered Instrumentation
GENERAL DESCRIPTION
The
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 OPERATING JUNCTION
TO-252 SOT-223 8L SOIC
TEMPERATURE RANGE
AMS1117CD AMS1117 AMS1117CS
-40 to 125° C
AMS1117CD-1.5 AMS1117-1.5 AMS1117CS-1.5
-40 to 125° C
AMS1117CD-1.8 AMS1117-1.8 AMS1117CS-1.8
-40 to 125° C
AMS1117CD-2.5 AMS1117-2.5 AMS1117CS-2.5
-40 to 125° C
AMS1117CD-2.85
AMS1117-2.85 AMS1117CS-2.85
-40 to 125° C
AMS1117CD-3.3 AMS1117-3.3 AMS1117CS-3.3
-40 to 125° C
AMS1117CD-5.0 AMS1117-5.0 AMS1117CS-5.0
-40 to 125° C
*For additional available fixed voltages contact factory.
PIN CONNECTIONS
3 PIN FIXED/ADJUSTABLE
VERSION
1- Ground/Adjust
2- V
OUT
3- V
IN
SOT-223 Top View
1 2
3
8L SOIC Top View
1
2
8
4
3
7
5
6
V
OUT
N/C
V
OUT
GND/ADJ
V
OUT
V
OUT
N/C
V
IN
TAB IS
OUTPUT
TO-252 FRONT VIEW
1
2
3
cospo
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