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
Nov. 2012 Rev. 1. 5
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BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Pin Configuration
AZ1085C
S Package
(TO-263-3)
3
2
1
INPUT
OUTPUT
ADJ/GND
S2 Package
(TO-263-2)
3
2
1
INPUT
OUTPUT (TAB)
ADJ/GND
D Package
(TO-252-2 (3))
(TO-252-2 (4))
3
2
1
INPUT
3
2
1
INPUT
OUTPUT
ADJ/GND
OUTPUT
ADJ/GND
Figure 2. Pin Configuration of AZ1085C (Top View)
Nov. 2012 Rev. 1. 5
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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
Nov. 2012 Rev. 1. 5
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BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Ordering Information
AZ1085C
-
E1: Lead Free
G1: Green
TR: Tape and Reel
Blank: Tube
Package
S: TO-263-3
S2: TO-263-2
D: TO-252-2 (3)/TO-252-2 (4)
ADJ: Adjustable Output
1.5: Fixed Output 1.5V
1.8: Fixed Output 1.8V
2.5: Fixed Output 2.5V
3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
Marking ID
Green
AZ1085CS-ADJG1
AZ1085CS-ADJTRG1
AZ1085CS-1.5G1
AZ1085CS-1.5TRG1
AZ1085CS-1.8G1
AZ1085CS-1.8TRG1
AZ1085CS-2.5G1
AZ1085CS-2.5TRG1
AZ1085CS-3.3G1
AZ1085CS-3.3TRG1
AZ1085CS-5.0G1
AZ1085CS-5.0TRG1
AZ1085CS2-ADJG1
AZ1085CS2-ADJTRG1
AZ1085CS2-1.5G1
AZ1085CS2-1.5TRG1
AZ1085CS2-1.8G1
AZ1085CS2-1.8TRG1
AZ1085CS2-2.5G1
AZ1085CS2-2.5TRG1
AZ1085CS2-3.3G1
AZ1085CS2-3.3TRG1
AZ1085CS2-5.0G1
AZ1085CS2-5.0TRG1
AZ1085C
Circuit Type
Package
Temperature
Range
Part Number
Lead Free
AZ1085CS-ADJE1
AZ1085CS-ADJTRE1
AZ1085CS-1.5E1
AZ1085CS-1.5TRE1
AZ1085CS-1.8E1
Lead Free
AZ1085CS-ADJE1
AZ1085CS-ADJE1
AZ1085CS-1.5E1
AZ1085CS-1.5E1
AZ1085CS-1.8E1
AZ1085CS-1.8E1
AZ1085CS-2.5E1
AZ1085CS-2.5E1
AZ1085CS-3.3E1
AZ1085CS-3.3E1
AZ1085CS-5.0E1
AZ1085CS-5.0E1
AZ1085CS2-ADJE1
AZ1085CS2-ADJE1
AZ1085CS2-1.5E1
AZ1085CS2-1.5E1
AZ1085CS2-1.8E1
AZ1085CS2-1.8E1
AZ1085CS2-2.5E1
AZ1085CS2-2.5E1
AZ1085CS2-3.3E1
AZ1085CS2-3.3E1
AZ1085CS2-5.0E1
AZ1085CS2-5.0E1
Green
AZ1085CS-ADJG1
AZ1085CS-ADJG1
AZ1085CS-1.5G1
AZ1085CS-1.5G1
AZ1085CS-1.8G1
AZ1085CS-1.8G1
AZ1085CS-2.5G1
AZ1085CS-2.5G1
AZ1085CS-3.3G1
AZ1085CS-3.3G1
AZ1085CS-5.0G1
AZ1085CS-5.0G1
AZ1085CS2-ADJG1
AZ1085CS2-ADJG1
AZ1085CS2-1.5G1
AZ1085CS2-1.5G1
AZ1085CS2-1.8G1
AZ1085CS2-1.8G1
AZ1085CS2-2.5G1
AZ1085CS2-2.5G1
AZ1085CS2-3.3G1
AZ1085CS2-3.3G1
AZ1085CS2-5.0G1
AZ1085CS2-5.0G1
Packing
Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
TO-263-3
0 to 125
o
C
AZ1085CS-1.8TRE1
AZ1085CS-2.5E1
AZ1085CS-2.5TRE1
AZ1085CS-3.3E1
AZ1085CS-3.3TRE1
AZ1085CS-5.0E1
AZ1085CS-5.0TRE1
AZ1085CS2-ADJE1
AZ1085CS2-ADJTRE1
AZ1085CS2-1.5E1
AZ1085CS2-1.5TRE1
AZ1085CS2-1.8E1
TO-263-2
0 to 125
o
C
AZ1085CS2-1.8TRE1
AZ1085CS2-2.5E1
AZ1085CS2-2.5TRE1
AZ1085CS2-3.3E1
AZ1085CS2-3.3TRE1
AZ1085CS2-5.0E1
AZ1085CS2-5.0TRE1
Nov. 2012 Rev. 1. 5
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BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Ordering Information (Continued)
Package
Temperature
Range
Part Number
Lead Free
AZ1085CD-ADJE1
AZ1085CD-ADJTRE1
AZ1085CD-1.5E1
AZ1085CD-1.5TRE1
AZ1085CD-1.8E1
TO-252-2 (3)/
TO-252-2 (4)
0 to 125
o
C
AZ1085CD-1.8TRE1
AZ1085CD-2.5E1
AZ1085CD-2.5TRE1
AZ1085CD-3.3E1
AZ1085CD-3.3TRE1
AZ1085CD-5.0E1
AZ1085CD-5.0TRE1
AZ1085C
Marking ID
Green
Lead Free
AZ1085CD-ADJE1
AZ1085CD-ADJE1
AZ1085CD-1.5E1
AZ1085CD-1.5E1
AZ1085CD-1.8E1
AZ1085CD-1.8E1
AZ1085CD-2.5E1
AZ1085CD-2.5E1
AZ1085CD-3.3E1
AZ1085CD-3.3E1
AZ1085CD-5.0E1
AZ1085CD-5.0E1
Green
AZ1085CD-ADJG1
AZ1085CD-ADJG1
AZ1085CD-1.5G1
AZ1085CD-1.5G1
AZ1085CD-1.8G1
AZ1085CD-1.8G1
AZ1085CD-2.5G1
AZ1085CD-2.5G1
AZ1085CD-3.3G1
AZ1085CD-3.3G1
AZ1085CD-5.0G1
AZ1085CD-5.0G1
Packing
Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
AZ1085CD-ADJG1
AZ1085CD-ADJTRG1
AZ1085CD-1.5G1
AZ1085CD-1.5TRG1
AZ1085CD-1.8G1
AZ1085CD-1.8TRG1
AZ1085CD-2.5G1
AZ1085CD-2.5TRG1
AZ1085CD-3.3G1
AZ1085CD-3.3TRG1
AZ1085CD-5.0G1
AZ1085CD-5.0TRG1
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.
Nov. 2012 Rev. 1. 5
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BCD Semiconductor Manufacturing Limited
