3A LOW DROPOUT LINEAR REGULATOR AZ1085
Data Sheet
1
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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.
Features
·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
·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
Figure 1. Package Types of AZ1085
TO-252 TO-220TO-263-3L TO-263-2L