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
·
·
·
·
·
·
·
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
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
Dec. 2012 Rev. 2. 1
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BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Functional Block Diagram
AZ1085
INPUT
Thermal
Protection
-
+
OUTPUT
A1
A2
For Adjustable Output, disconnect A1 and A2, connect B
For Fixed Output, connect A1 and A2, disconnect B
ADJ/
GND
B
Figure 3. Functional Block Diagram of AZ1085
Dec. 2012 Rev. 2. 1
3
BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Ordering Information
AZ1085
-
E1: Lead Free
G1: Green
TR: Tape and Reel
Blank: Tube
Package
D: TO-252-2 (1)/TO-252-2 (2)
/TO-252-2 (3)/TO-252-2 (4)
T: TO-220-3
S: TO-263-3
S2: TO-263-2
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
AZ1085
Circuit Type
Package
Tempera-
ture Range
Part Number
Lead Free
AZ1085D-ADJE1
AZ1085D-ADJTRE1
AZ1085D-1.5E1
AZ1085D-1.5TRE1
Green
AZ1085D-ADJG1
AZ1085D-ADJTRG1
AZ1085D-1.5G1
AZ1085D-1.5TRG1
AZ1085D-1.8G1
AZ1085D-1.8TRG1
AZ1085D-2.5G1
AZ1085D-2.5TRG1
AZ1085D-3.3G1
AZ1085D-3.3TRG1
AZ1085D-5.0G1
AZ1085D-5.0TRG1
AZ1085T-ADJG1
AZ1085T-1.5G1
AZ1085T-1.8G1
AZ1085T-2.5G1
AZ1085T-3.3G1
AZ1085T-5.0G1
Marking ID
Lead Free
AZ1085D-ADJE1
AZ1085D-ADJE1
AZ1085D-1.5E1
AZ1085D-1.5E1
AZ1085D-1.8E1
AZ1085D-1.8E1
AZ1085D-2.5E1
AZ1085D-2.5E1
AZ1085D-3.3E1
AZ1085D-3.3E1
AZ1085D-5.0E1
AZ1085D-5.0E1
AZ1085T-ADJE1
AZ1085T-1.5E1
AZ1085T-1.8E1
AZ1085T-2.5E1
AZ1085T-3.3E1
AZ1085T-5.0E1
Green
AZ1085D-ADJG1
AZ1085D-ADJG1
AZ1085D-1.5G1
AZ1085D-1.5G1
AZ1085D-1.8G1
AZ1085D-1.8G1
AZ1085D-2.5G1
AZ1085D-2.5G1
AZ1085D-3.3G1
AZ1085D-3.3G1
AZ1085D-5.0G1
AZ1085D-5.0G1
AZ1085T-ADJG1
AZ1085T-1.5G1
AZ1085T-1.8G1
AZ1085T-2.5G1
AZ1085T-3.3G1
AZ1085T-5.0G1
Packing
Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tube
Tube
Tube
Tube
Tube
TO-252-2 (1)/
TO-252-2 (2)/
TO-252-2 (3)/
TO-252-2 (4)
AZ1085D-1.8E1
0 to 125 C
o
AZ1085D-1.8TRE1
AZ1085D-2.5E1
AZ1085D-2.5TRE1
AZ1085D-3.3E1
AZ1085D-3.3TRE1
AZ1085D-5.0E1
AZ1085D-5.0TRE1
AZ1085T-ADJE1
AZ1085T-1.5E1
TO-220-3
0 to 125 C
o
AZ1085T-1.8E1
AZ1085T-2.5E1
AZ1085T-3.3E1
AZ1085T-5.0E1
Dec. 2012 Rev. 2. 1
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BCD Semiconductor Manufacturing Limited
Data Sheet
3A LOW DROPOUT LINEAR REGULATOR
Ordering Information (Continued)
Package
Tempera-
ture Range
Part Number
Lead Free
AZ1085S-ADJE1
AZ1085S-ADJTRE1
AZ1085S-1.5E1
AZ1085S-1.5TRE1
AZ1085S-1.8E1
TO-263-3
0 to 125
o
C
AZ1085S-1.8TRE1
AZ1085S-2.5E1
AZ1085S-2.5TRE1
AZ1085S-3.3E1
AZ1085S-3.3TRE1
AZ1085S-5.0E1
AZ1085S-5.0TRE1
AZ1085S2-ADJE1
AZ1085S2-ADJTRE1
AZ1085S2-1.5E1
AZ1085S2-1.5TRE1
AZ1085S2-1.8E1
TO-263-2
0
to 125
o
C
AZ1085S2-1.8TRE1
AZ1085S2-2.5E1
AZ1085S2-2.5TRE1
AZ1085S2-3.3E1
AZ1085S2-3.3TRE1
AZ1085S2-5.0E1
AZ1085S2-5.0TRE1
Green
AZ1085S-ADJG1
AZ1085S-ADJTRG1
AZ1085S-1.5G1
AZ1085S-1.5TRG1
AZ1085S-1.8G1
AZ1085S-1.8TRG1
AZ1085S-2.5G1
AZ1085S-2.5TRG1
AZ1085S-3.3G1
AZ1085S-3.3TRG1
AZ1085S-5.0G1
AZ1085S-5.0TRG1
AZ1085S2-ADJG1
AZ1085S2-ADJTRG1
AZ1085S2-1.5G1
AZ1085S2-1.5TRG1
AZ1085S2-1.8G1
AZ1085S2-1.8TRG1
AZ1085S2-2.5G1
AZ1085S2-2.5TRG1
AZ1085S2-3.3G1
AZ1085S2-3.3TRG1
AZ1085S2-5.0G1
AZ1085S2-5.0TRG1
Marking ID
Lead Free
AZ1085S-ADJE1
AZ1085S-ADJE1
AZ1085S-1.5E1
AZ1085S-1.5E1
AZ1085S-1.8E1
AZ1085S-1.8E1
AZ1085S-2.5E1
AZ1085S-2.5E1
AZ1085S-3.3E1
AZ1085S-3.3E1
AZ1085S-5.0E1
AZ1085S-5.0E1
AZ1085S2-ADJE1
AZ1085S2-ADJE1
AZ1085S2-1.5E1
AZ1085S2-1.5E1
AZ1085S2-1.8E1
AZ1085S2-1.8E1
AZ1085S2-2.5E1
AZ1085S2-2.5E1
AZ1085S2-3.3E1
AZ1085S2-3.3E1
AZ1085S2-5.0E1
AZ1085S2-5.0E1
Green
AZ1085S-ADJG1
AZ1085S-ADJG1
AZ1085S-1.5G1
AZ1085S-1.5G1
AZ1085S-1.8G1
AZ1085S-1.8G1
AZ1085S-2.5G1
AZ1085S-2.5G1
AZ1085S-3.3G1
AZ1085S-3.3G1
AZ1085S-5.0G1
AZ1085S-5.0G1
AZ1085S2-ADJG1
AZ1085S2-ADJG1
AZ1085S2-1.5G1
AZ1085S2-1.5G1
AZ1085S2-1.8G1
AZ1085S2-1.8G1
AZ1085S2-2.5G1
AZ1085S2-2.5G1
AZ1085S2-3.3G1
AZ1085S2-3.3G1
AZ1085S2-5.0G1
AZ1085S2-5.0G1
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
AZ1085
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.
Dec. 2012 Rev. 2. 1
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BCD Semiconductor Manufacturing Limited