Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
General Description
The AZ1085C is a series of low dropout positive volt-
age 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 AZ1085C 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 AZ1085C series is available in standard packages
of TO-263-3, TO-263-2, TO-252-2 (3) and TO-252-2
(4).
AZ1085C
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
Compatible with Low ESR Ceramic Capacitor
Line Regulation: 0.015% (Typ)
Load Regulation: 0.1% (Typ)
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-252-2 (3)
TO-252-2 (4)
Figure 1. Package Types of AZ1085C
Jan. 2013 Rev. 1. 7
1
BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Functional Block Diagram
AZ1085C
3
INPUT
Thermal
Protection
-
+
2
OUTPUT
A1
A2
For Adjustable Output, disconnect A1 and A2, connect B
For Fixed Output, connect A1 and A2, disconnect B
1
B
ADJ/
GND
Figure 3. Functional Block Diagram of AZ1085C
Jan. 2013 Rev. 1. 7
3
BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Ordering Information (Continued)
Packing
Type
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
AZ1085C
Package
Temperature Range
Part Number
Marking ID
AZ1085CD-ADJTRG1
AZ1085CD-1.5TRG1
TO-252-2(3)/TO-252-2(4)
0 to 125
o
C
AZ1085CD-1.8TRG1
AZ1085CD-2.5TRG1
AZ1085CD-3.3TRG1
AZ1085CD-5.0TRG1
AZ1085CD-ADJG1
AZ1085CD-1.5G1
AZ1085CD-1.8G1
AZ1085CD-2.5G1
AZ1085CD-3.3G1
AZ1085CD-5.0G1
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Jan. 2013 Rev. 1. 7
5
BCD Semiconductor Manufacturing Limited
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