Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
General Description
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).
AZ1085
Features
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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 125
o
C
Line Regulation: 0.015% (Typical)
Load Regulation: 0.1% (Typical)
Applications
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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)
TO-252-2 (2)
TO-252-2 (3)
TO-252-2 (4)
Figure 1. Package Types of AZ1085
Sept. 2011 Rev. 1. 9
1
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
