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, 2.85V,
3.3V, 5.0V and adjustable versions. The fixed versions
integrate 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-263-2L, TO-263-3L, TO-220 and TO-252.
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-263-3L
TO-263-2L
TO-252
TO-220
Figure 1. Package Types of AZ1085
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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