Harman Kardon HK 990/230 Service Manual page 11

Advanced
Monolithic
Systems
FEATURES
• • Three Terminal Adjustable or Fixed Voltages*
1.5V, 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.
• • SOT-223, TO-252 and SO-8 package available
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
TO-252
AMS1117CD AMS1117
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
*For additional available fixed voltages contact factory.
PIN CONNECTIONS
3 PIN FIXED/ADJUSTABLE
VERSION
1- Ground/Adjust
2- V
OUT
3- V
IN
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
SOT-223 8L SOIC
AMS1117CS
AMS1117CS-1.5
AMS1117CS-1.8
AMS1117CS-2.5
AMS1117CS-2.85
AMS1117CS-3.3
AMS1117CS-5.0
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
OPERATING JUNCTION
TEMPERATURE RANGE
-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
SOT-223 Top View
1 2 3
Phone (925) 443-0722 Fax (925) 443-0723
9
AMS1117
8L SOIC Top View
GND/ADJ
1 8 N/C
V
V 2 7
OUT OUT
V V
3 6
OUT OUT
V N/C
4 5
IN
TO-252 FRONT VIEW
3
TAB IS
2
OUTPUT
1