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BCD Semiconductor
BCD Semiconductor

AZ1085 Datasheet

3A LOW DROPOUT LINEAR REGULATOR


AZ1085 Datasheet Preview


3A LOW DROPOUT LINEAR REGULATOR
General Description
Features
Data Sheet
AZ1085
The AZ1085 is a series of low dropout positive voltage
regulators with a maximum dropout of 1.5V at 3A of
load current.
The series features on-chip thermal shutdown. It also
includes a bandgap reference and a current limiting cir-
cuit.
The AZ1085 is available in 1.5V, 1.8V, 2.5V, 3.3V,
5.0V and adjustable versions. The fixed versions inte-
grate the adjust resistors. The adjustable version can
set the output voltage with two external resistors.
The AZ1085 series is available in standard packages of
TO-263-2, TO-263-3, TO-220-3, TO-252-2 (1), TO-
252-2 (2), TO-252-2 (3) and TO-252-2 (4).
· Low Dropout Voltage: Typical 1.3V at 3A
· Current Limiting and Thermal Protection
· Output Current: 3A
· Current Limit: 4.5A
· Operating Junction Temperature: 0 to 125oC
· Line Regulation: 0.015% (Typical)
· Load Regulation: 0.1% (Typical)
Applications
· High Efficiency Linear Regulators
· Battery Charger
· Post Regulation for Switching Supplies
· Microprocessor Supply
· Mother Board Power Supplies
· DVD-Video Player
· Telecom Equipment
· Set Top boxes and Web Boxes Modules' Supply
TO-263-3
TO-263-2
TO-220-3
TO-252-2 (1)
Sept. 2011 Rev. 1. 9
TO-252-2 (2)
TO-252-2 (3)
Figure 1. Package Types of AZ1085
TO-252-2 (4)
BCD Semiconductor Manufacturing Limited
1
Page 1

3A LOW DROPOUT LINEAR REGULATOR
Pin Configuration
S Package
(TO-263-3)
3 INPUT
2 OUTPUT
1 ADJ/GND
Data Sheet
AZ1085
S2 Package
(TO-263-2)
3 INPUT
2 OUTPUT(TAB)
1 ADJ/GND
(TO-252-2 (1))
3 INPUT
2 OUTPUT
1 ADJ/GND
(TO-252-2 (3))
D Package
(TO-252-2 (2))
3 INPUT
2 OUTPUT
1 ADJ/GND
(TO-252-2 (4))
3 INPUT
2 OUTPUT
1 ADJ/GND
T Package
(TO-220-3)
3
2
1
3 INPUT
2 OUTPUT
1 ADJ/GND
INPUT
OUTPUT
ADJ/GND
Sept. 2011 Rev. 1. 9
Figure 2. Pin Configuration of AZ1085 (Top View)
BCD Semiconductor Manufacturing Limited
2
Page 2

3A LOW DROPOUT LINEAR REGULATOR
Functional Block Diagram
Data Sheet
AZ1085
INPUT
Thermal
Protection
-
+
A1
B
A2
For Adjustable Output, disconnect A1 and A2, connect B
For Fixed Output, connect A1 and A2, disconnect B
OUTPUT
ADJ/
GND
Figure 3. Functional Block Diagram of AZ1085
Sept. 2011 Rev. 1. 9
BCD Semiconductor Manufacturing Limited
3
Page 3
Part Number AZ1085
Manufactur BCD Semiconductor
Description 3A LOW DROPOUT LINEAR REGULATOR
Total Page 21 Pages
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