AiT Semiconductor Inc.
www.ait-ic.com
A1084
BIPOLAR LDO REGULATOR
5A BIPOLAR LINEAR REGULATOR
REV1.3 - JUN 2007 RELEASED, APR 2020 UPDATED - - 1 -
DESCRIPTION
FEATURES
A1084 is a series of low dropout three terminal
regulators with a typical dropout voltage of 1.4V at
5A load current.
Other than fixed voltage versions (1.8V, 2.5V, 3.3V,
5.0V), A1084 has an adjustable voltage version, with
which desired voltage can be achieved by setting the
values of two external resistors of the application
circuitry.
A1084 offers thermal shut down and current limit
functions to assure the stability of chip and power
system.
The A1084 is available in TO-252, TO-263-2 and
TO-263-3 packages.
Fixed and adjustable versions.
Maximum output current : 5A
Maximum input voltage: 15V
Line regulation: 0.2％ (Typical)
Load regulation: 0.2％ (Typical)
On-Chip Thermal Shutdown
Operation environment Temperature:
-40℃~ 85℃
Available in TO-252, TO-263-2 and TO-263-3
packages
APPLICATION
Power Management for Computer Mother
Board, Graphic Card
Battery Charger
Post Regulators for Switching Supplies
Microprocessor Supply
ORDERING INFORMATION
TYPICAL APPLICATION
Package Type
Part Number
TO-252
SPQ: 2,500pcs/Reel
D
TO-263-2
SPQ: 800pcs/Reel
S2
TO-263-3
SPQ: 800pcs/Reel
S3
Note
XX: Output Voltage,
18 = 1.8V, 33 = 3.3V,
ADJ: Adjustable
V: Halogen free Package
R: Tape & Reel
AiT provides all RoHS products
Fig 1. A1084 fixed version application circuit
NOTE: Input capacitor (C
IN
=10uF) and Output
capacitor (C
OUT
=22uF) are recommended in all
application circuit. Tantalum capacitor is preferred.
AiT Semiconductor Inc.
www.ait-ic.com
A1084
BIPOLAR LDO REGULATOR
5A BIPOLAR LINEAR REGULATOR
REV1.3 - JUN 2007 RELEASED, APR 2020 UPDATED - - 2 -
PIN DESCRIPTION
Top View
Top View
Top View
Pin #
TO-252
TO-263-2
TO-263-3
A1084DR-XX
A1084DR-ADJ
A1084S2R-XX
A1084S2R-ADJ
A1084S3R-XX
A1084S3R-ADJ
1
GND
ADJ
GND
ADJ
GND
ADJ
2
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
3
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN