5A LOW DROPOUT LINEAR REGULATOR AZ1084
Data Sheet
1
Oct. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
General Description
The AZ1084 is a series of low dropout positive voltage
regulators with a maximum dropout of 1.5V at 5A of
load current.
The series features on-chip thermal limiting which pro-
vides protection against any combination of overload
and ambient temperatures that would create excessive
junction temperatures. It also includes a trimmed band-
gap reference and a current limiting circuit.
The AZ1084 is available in 1.5V, 1.8V, 2.5V, 2.85V,
3.3V and 5.0V versions. The fixed versions integrate
the adjust resistors. It is also available in an adjustable
version which can set the output voltage with two
external resistors.
The AZ1084 series is available in standard packages of
TO-263-2, TO-263-3, TO-220 and TO-252.
Features
Low Dropout Voltage: 1.3V Typically at 5A
Current Limiting and Thermal Protection
Output Current: 5A
Current Limit: 6.5A
Operating Junction Temperature Range:
0 to
125
o
C
Line Regulation: 0.015% (Typical)
Load Regulation: 0.2% (Typical)
Applications
High Efficiency Linear Regulators
Battery Chargers
Post Regulation for Switching Supply
Microprocessor Supply
Desktop PCs, RISC and Embedded Processors'
Supply
Figure 1. Package Types of AZ1084
TO-252
TO-220
TO-263-3
TO-263-2
5A LOW DROPOUT LINEAR REGULATOR AZ1084
Data Sheet
2
Oct. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
Figure 2. Pin Configuration of AZ1084 (Top View)
Pin Configuration
Functional Block Diagram
Figure 3. Functional Block Diagram of AZ1084
T Package
(TO-220)
S Package
(TO-263-3)
INPUT
OUTPUT
ADJ/GND
1
2
3
1
2
3
ADJ/GND
OUTPUT
D Package
(TO-252)
1
2
3
ADJ/GND
OUTPUT
INPUT
INPUT
S Package
(TO-263-2)
ADJ/GND
INPUT
1
2
3
OUTPUT (TAB)
Thermal
Protection
+
-
For Adjustable Output, disconnect A1 and A2, connect B
INPUT
OUTPUT
ADJ/
GND
A1
A2
B
For Fixed Output, connect A1 and A2, disconnect B
1
2
3
5A LOW DROPOUT LINEAR REGULATOR AZ1084
Data Sheet
3
Oct. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
Circuit Type
Package
D: TO-252
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
E1: Lead Free
Blank: Tin Lead
AZ1084 -
TR: Tape and Reel
Blank: Tube
T: TO-220
S: TO-263-3
S2: TO-263-2
2.85: Fixed Output 2.85V
Package
Tempera-
ture Range
Part Number
Marking ID
Packing
Type
Tin Lead
Lead Free
Tin Lead
Lead Free
TO-252
0 to
125
o
C
AZ1084D-ADJ
AZ1084D-ADJE1
AZ1084D-ADJ
AZ1084D-ADJE1
Tube
AZ1084D-ADJTR
AZ1084D-ADJTRE1
AZ1084D-ADJ
AZ1084D-ADJE1
Tape & Reel
AZ1084D-1.5
AZ1084D-1.5E1
AZ1084D-1.5
AZ1084D-1.5E1
Tube
AZ1084D-1.5TR
AZ1084D-1.5TRE1
AZ1084D-1.5
AZ1084D-1.5E1
Tape & Reel
AZ1084D-1.8
AZ1084D-1.8E1
AZ1084D-1.8
AZ1084D-1.8E1
Tube
AZ1084D-1.8TR
AZ1084D-1.8TRE1
AZ1084D-1.8
AZ1084D-1.8E1
Tape & Reel
AZ1084D-2.5
AZ1084D-2.5E1
AZ1084D-2.5
AZ1084D-2.5E1
Tube
AZ1084D-2.5TR
AZ1084D-2.5TRE1
AZ1084D-2.5
AZ1084D-2.5E1
Tape & Reel
AZ1084D-2.85
AZ1084D-2.85E1
AZ1084D-2.85
AZ1084D-2.85E1
Tube
AZ1084D-2.85TR
AZ1084D-2.85TRE1
AZ1084D-2.85
AZ1084D-2.85E1
Tape & Reel
AZ1084D-3.3
AZ1084D-3.3E1
AZ1084D-3.3
AZ1084D-3.3E1
Tube
AZ1084D-3.3TR
AZ1084D-3.3TRE1
AZ1084D-3.3
AZ1084D-3.3E1
Tape & Reel
AZ1084D-5.0
AZ1084D-5.0E1
AZ1084D-5.0
AZ1084D-5.0E1
Tube
AZ1084D-5.0TR
AZ1084D-5.0TRE1
AZ1084D-5.0
AZ1084D-5.0E1
Tape & Reel
TO-220
0 to
125
o
C
AZ1084T-ADJ
AZ1084T-ADJE1
AZ1084T-ADJ
AZ1084T-ADJE1
Tube
AZ1084T-1.5
AZ1084T-1.5E1
AZ1084T-1.5
AZ1084T-1.5E1
Tube
AZ1084T-1.8
AZ1084T-1.8E1
AZ1084T-1.8
AZ1084T-1.8E1
Tube
AZ1084T-2.5
AZ1084T-2.5E1
AZ1084T-2.5
AZ1084T-2.5E1
Tube
AZ1084T-2.85
AZ1084T-2.85E1
AZ1084T-2.85
AZ1084T-2.85E1
Tube
AZ1084T-3.3
AZ1084T-3.3E1
AZ1084T-3.3
AZ1084T-3.3E1
Tube
AZ1084T-5.0
AZ1084T-5.0E1
AZ1084T-5.0
AZ1084T-5.0E1
Tube
Ordering Information
5A LOW DROPOUT LINEAR REGULATOR AZ1084
Data Sheet
4
Oct. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
Package
Tempera-
ture Range
Part Number
Marking ID
Packing
Type
Tin Lead
LeadFree
Tin Lead
LeadFree
TO-263-3
0 to
125
o
C
AZ1084S-ADJ
AZ1084S-ADJE1
AZ1084S-ADJ
AZ1084S-ADJE1
Tube
AZ1084S-ADJTR
AZ1084S-ADJTRE1
AZ1084S-ADJ
AZ1084S-ADJE1
Tape & Reel
AZ1084S-1.5
AZ1084S-1.5E1
AZ1084S-1.5
AZ1084S-1.5E1
Tube
AZ1084S-1.5TR
AZ1084S-1.5TRE1
AZ1084S-1.5
AZ1084S-1.5E1
Tape & Reel
AZ1084S-1.8
AZ1084S-1.8E1
AZ1084S-1.8
AZ1084S-1.8E1
Tube
AZ1084S-1.8TR
AZ1084S-1.8TRE1
AZ1084S-1.8
AZ1084S-1.8E1
Tape & Reel
AZ1084S-2.5
AZ1084S-2.5E1
AZ1084S-2.5
AZ1084S-2.5E1
Tube
AZ1084S-2.5TR
AZ1084S-2.5TRE1
AZ1084S-2.5
AZ1084S-2.5E1
Tape & Reel
AZ1084S-2.85
AZ1084S-2.85E1
AZ1084S-2.85
AZ1084S-2.85E1
Tube
AZ1084S-2.85TR
AZ1084S-2.85TRE1
AZ1084S-2.85
AZ1084S-2.85E1
Tape & Reel
AZ1084S-3.3
AZ1084S-3.3E1
AZ1084S-3.3
AZ1084S-3.3E1
Tube
AZ1084S-3.3TR
AZ1084S-3.3TRE1
AZ1084S-3.3
AZ1084S-3.3E1
Tape & Reel
AZ1084S-5.0
AZ1084S-5.0E1
AZ1084S-5.0
AZ1084S-5.0E1
Tube
AZ1084S-5.0TR
AZ1084S-5.0TRE1
AZ1084S-5.0
AZ1084S-5.0E1
Tape & Reel
TO-263-2
0 to
125
o
C
AZ1084S2-ADJ
AZ1084S2-ADJE1
AZ1084S2-ADJ
AZ1084S2-ADJE1
Tube
AZ1084S2-ADJTR
AZ1084S2-ADJTRE1
AZ1084S2-ADJ
AZ1084S2-ADJE1
Tape & Reel
AZ1084S2-1.5
AZ1084S2-1.5E1
AZ1084S2-1.5
AZ1084S2-1.5E1
Tube
AZ1084S2-1.5TR
AZ1084S2-1.5TRE1
AZ1084S2-1.5
AZ1084S2-1.5E1
Tape & Reel
AZ1084S2-1.8
AZ1084S2-1.8E1
AZ1084S2-1.8
AZ1084S2-1.8E1
Tube
AZ1084S2-1.8TR
AZ1084S2-1.8TRE1
AZ1084S2-1.8
AZ1084S2-1.8E1
Tape & Reel
AZ1084S2-2.5
AZ1084S2-2.5E1
AZ1084S2-2.5
AZ1084S2-2.5E1
Tube
AZ1084S2-2.5TR
AZ1084S2-2.5TRE1
AZ1084S2-2.5
AZ1084S2-2.5E1
Tape & Reel
AZ1084S2-2.85
AZ1084S2-2.85E1
AZ1084S2-2.85
AZ1084S2-2.85E1
Tube
AZ1084S2-2.85TR
AZ1084S2-2.85TRE1
AZ1084S2-2.85
AZ1084S2-2.85E1
Tape & Reel
AZ1084S2-3.3
AZ1084S2-3.3E1
AZ1084S2-3.3
AZ1084S2-3.3E1
Tube
AZ1084S2-3.3TR
AZ1084S2-3.3TRE1
AZ1084S2-3.3
AZ1084S2-3.3E1
Tape & Reel
AZ1084S2-5.0
AZ1084S2-5.0E1
AZ1084S2-5.0
AZ1084S2-5.0E1
Tube
AZ1084S2-5.0TR
AZ1084S2-5.0TRE1
AZ1084S2-5.0
AZ1084S2-5.0E1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Ordering Information (Continued)
5A LOW DROPOUT LINEAR REGULATOR AZ1084
Data Sheet
5
Oct. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
Note 1:
Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated under"Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum
Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
Operating Junction Temperature Range
T
J
150
o
C
Storage Temperature Range
T
S
-65
150
o
C
Lead Temperature (Soldering, 10 sec.)
T
LEAD
300
o
C
ESD (Human Body Model)
ESD
2000
V
Parameter
Symbol
Min
Max
Unit
Input Voltage
V
IN
12
V
Operating Junction Temperature Range
T
J
0
125
o
C
Absolute Maximum Ratings (Note 1)
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