A1085
AiT Semiconductor Inc.
www.ait-ic.com
3A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
THERMAL SHUTDOWN AND CURRENT LIMIT FUNCTIONS
DESCRIPTION
FEATURES
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Provide Fixed Version and an Adjustable
Version, Output Value can be customized on
command.
The A1085 is a series of low dropout three terminal
regulators with a dropout of 1.3V at 3A load current.
Other than a fixed version (VOUT=1.8V, 2.5V, 3.3V,
5V), The A1085 has an adjustable version, which
can set the output voltage with only two external
resistors.
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Maximum Output Current: 3A
Output Voltage Accuracy within ±2%
Range of Operation Input Voltage: Max 15V
Line Regulation: 0.2% (Typ.)
Load Regulation: 0.4% (Typ.)
Environment Temperature: -50oC~+140oC
The A1085 offers thermal shut down and current
limit functions, to assure the stability of chip and
power system. And the A1085 uses trimming
technique to guarantee output voltage accuracy
within ±2%
Available in TO-252, TO-263-2 and TO-263-3
Package
APPLICATION
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Power Management for Computer Mother
Board, Graphic Card
The A1085 is available in TO-252, TO-263-2 and
TO-263-3 package.
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Battery Charger
Microprocessor Supply
Post Regulators for Switching Supplies
ORDERING INFORMATION
TYPICAL APPLICATION (Schematics 1)
Package Type
TO-252
Part Number
A1085DR-XX
D
A1085DVR-XX
A1085S2R-XX
A1085S2VR-XX
A1085S3R-XX
A1085S3VR-XX
TO-263-2
TO-263-3
S2
S3
Adjustable Version
XX: Output Voltage,
33 = 3.3V, 50 = 5V
ADJ: Adjustable
VOUT = VREF x (1 + R2 / R1) + IADJ x R2
Note
R : Tape & Reel
V: Green Package
AiT provides all Pb free products
Suffix “V” means Green Package
Fixed Output Version
REV1.2
-AUG 2006 RELEASED – SEP 2008 REVISED -
- 1 -
AITSEMI [ AiT Semiconductor ]
