Data Sheet
5A LOW DROPOUT LINEAR REGULATOR
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-220-3 and TO-252-2 (1).
AZ1084
Features
·
·
·
·
·
·
·
Low Dropout Voltage: 1.3V Typical 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 (Adj Version): 0.015% (Typical)
Load Regulation (Adj Version): 0.1% (Typical)
Applications
·
·
·
·
·
High Efficiency Linear Regulators
Battery Chargers
Post Regulation for Switching Supply
Microprocessor Supply
Desktop PCs, RISC and Embedded Processors'
Supply
TO-263-3
TO-263-2
TO-252-2 (1)
TO-220-3
Figure 1. Package Types of AZ1084
Mar. 2007 Rev. 1. 4
1
BCD Semiconductor Manufacturing Limited
Data Sheet
5A LOW DROPOUT LINEAR REGULATOR
Pin Configuration
T Package
(TO-220-3)
D Package
(TO-252-2(1))
3
INPUT
OUTPUT
ADJ/GND
2
1
OUTPUT
ADJ/GND
INPUT
AZ1084
3
2
1
S Package
(TO-263-3)
S2 Package
(TO-263-2)
3
2
1
INPUT
OUTPUT
ADJ/GND
3
2
1
INPUT
OUTPUT (TAB)
ADJ/GND
Figure 2. Pin Configuration of AZ1084 (Top View)
Functional Block Diagram
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 AZ1084
Mar. 2007 Rev. 1. 4
2
BCD Semiconductor Manufacturing Limited
Data Sheet
5A LOW DROPOUT LINEAR REGULATOR
Ordering Information
AZ1084
-
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Blank: Tube
Package
D: TO-252-2 (1)
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
2.85: Fixed Output 2.85V
3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
AZ1084
Circuit Type
Package
Tempera-
ture Range
Part Number
Tin Lead
AZ1084D-ADJ
AZ1084D-ADJTR
AZ1084D-1.5
AZ1084D-1.5TR
AZ1084D-1.8
AZ1084D-1.8TR
Lead Free
AZ1084D-ADJE1
AZ1084D-ADJTRE1
AZ1084D-1.5E1
AZ1084D-1.5TRE1
AZ1084D-1.8E1
AZ1084D-1.8TRE1
AZ1084D-2.5E1
AZ1084D-2.5TRE1
AZ1084D-2.85E1
AZ1084D-2.85TRE1
AZ1084D-3.3E1
AZ1084D-3.3TRE1
AZ1084D-5.0E1
AZ1084D-5.0TRE1
AZ1084T-ADJE1
AZ1084T-1.5E1
AZ1084T-1.8E1
AZ1084T-2.5E1
AZ1084T-2.85E1
AZ1084T-3.3E1
AZ1084T-5.0E1
Tin Lead
Marking ID
Lead Free
AZ1084D-ADJE1
AZ1084D-ADJE1
AZ1084D-1.5E1
AZ1084D-1.5E1
AZ1084D-1.8E1
AZ1084D-1.8E1
AZ1084D-2.5E1
AZ1084D-2.5E1
AZ1084D-2.85E1
AZ1084D-2.85E1
AZ1084D-3.3E1
AZ1084D-3.3E1
AZ1084D-5.0E1
AZ1084D-5.0E1
AZ1084T-ADJE1
AZ1084T-1.5E1
AZ1084T-1.8E1
AZ1084T-2.5E1
AZ1084T-2.85E1
AZ1084T-3.3E1
AZ1084T-5.0E1
Packing
Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tube
Tube
Tube
Tube
Tube
Tube
AZ1084D-ADJ
AZ1084D-ADJ
AZ1084D-1.5
AZ1084D-1.5
AZ1084D-1.8
AZ1084D-1.8
AZ1084D-2.5
AZ1084D-2.5
AZ1084D-2.85
AZ1084D-2.85
AZ1084D-3.3
AZ1084D-3.3
AZ1084D-5.0
AZ1084D-5.0
AZ1084T-ADJ
AZ1084T-1.5
AZ1084T-1.8
AZ1084T-2.5
AZ1084T-2.85
AZ1084T-3.3
AZ1084T-5.0
TO-252-2 (1)
0 to 125
o
C
AZ1084D-2.5
AZ1084D-2.5TR
AZ1084D-2.85
AZ1084D-2.85TR
AZ1084D-3.3
AZ1084D-3.3TR
AZ1084D-5.0
AZ1084D-5.0TR
AZ1084T-ADJ
AZ1084T-1.5
AZ1084T-1.8
TO-220-3
0 to 125
o
C
AZ1084T-2.5
AZ1084T-2.85
AZ1084T-3.3
AZ1084T-5.0
Mar. 2007 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
5A LOW DROPOUT LINEAR REGULATOR
Ordering Information (Continued)
Package
Tempera-
ture Range
Part Number
Tin Lead
AZ1084S-ADJ
AZ1084S-ADJTR
AZ1084S-1.5
AZ1084S-1.5TR
AZ1084S-1.8
AZ1084S-1.8TR
TO-263-3
0 to 125
o
C
AZ1084S-2.5
AZ1084S-2.5TR
AZ1084S-2.85
AZ1084S-2.85TR
AZ1084S-3.3
AZ1084S-3.3TR
AZ1084S-5.0
AZ1084S-5.0TR
AZ1084S2-ADJ
AZ1084S2-ADJTR
AZ1084S2-1.5
AZ1084S2-1.5TR
AZ1084S2-1.8
AZ1084S2-1.8TR
TO-263-2
0 to 125
o
C
AZ1084S2-2.5
AZ1084S2-2.5TR
AZ1084S2-2.85
AZ1084S2-2.85TR
AZ1084S2-3.3
AZ1084S2-3.3TR
AZ1084S2-5.0
AZ1084S2-5.0TR
LeadFree
AZ1084S-ADJE1
AZ1084S-ADJTRE1
AZ1084S-1.5E1
AZ1084S-1.5TRE1
AZ1084S-1.8E1
AZ1084S-1.8TRE1
AZ1084S-2.5E1
AZ1084S-2.5TRE1
AZ1084S-2.85E1
AZ1084S-2.85TRE1
AZ1084S-3.3E1
AZ1084S-3.3TRE1
AZ1084S-5.0E1
AZ1084S-5.0TRE1
AZ1084S2-ADJE1
AZ1084S2-ADJTRE1
AZ1084S2-1.5E1
AZ1084S2-1.5TRE1
AZ1084S2-1.8E1
AZ1084S2-1.8TRE1
AZ1084S2-2.5E1
AZ1084S2-2.5TRE1
AZ1084S2-2.85E1
AZ1084S2-2.85TRE1
AZ1084S2-3.3E1
AZ1084S2-3.3TRE1
AZ1084S2-5.0E1
AZ1084S2-5.0TRE1
Tin Lead
AZ1084S-ADJ
AZ1084S-ADJ
AZ1084S-1.5
AZ1084S-1.5
AZ1084S-1.8
AZ1084S-1.8
AZ1084S-2.5
AZ1084S-2.5
AZ1084S-2.85
AZ1084S-2.85
AZ1084S-3.3
AZ1084S-3.3
AZ1084S-5.0
AZ1084S-5.0
AZ1084S2-ADJ
AZ1084S2-ADJ
AZ1084S2-1.5
AZ1084S2-1.5
AZ1084S2-1.8
AZ1084S2-1.8
AZ1084S2-2.5
AZ1084S2-2.5
AZ1084S2-2.85
AZ1084S2-2.85
AZ1084S2-3.3
AZ1084S2-3.3
AZ1084S2-5.0
AZ1084S2-5.0
Marking ID
LeadFree
AZ1084S-ADJE1
AZ1084S-ADJE1
AZ1084S-1.5E1
AZ1084S-1.5E1
AZ1084S-1.8E1
AZ1084S-1.8E1
AZ1084S-2.5E1
AZ1084S-2.5E1
AZ1084S-2.85E1
AZ1084S-2.85E1
AZ1084S-3.3E1
AZ1084S-3.3E1
AZ1084S-5.0E1
AZ1084S-5.0E1
AZ1084S2-ADJE1
AZ1084S2-ADJE1
AZ1084S2-1.5E1
AZ1084S2-1.5E1
AZ1084S2-1.8E1
AZ1084S2-1.8E1
AZ1084S2-2.5E1
AZ1084S2-2.5E1
AZ1084S2-2.85E1
AZ1084S2-2.85E1
AZ1084S2-3.3E1
AZ1084S2-3.3E1
AZ1084S2-5.0E1
AZ1084S2-5.0E1
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
Tube
Tape & Reel
Tube
Tape & Reel
AZ1084
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 1. 4
4
BCD Semiconductor Manufacturing Limited
Data Sheet
5A LOW DROPOUT LINEAR REGULATOR
Absolute Maximum Ratings (Note 1)
Parameter
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10sec.)
TO-263-2
Thermal Resistance (Note 2)
TO-263-3
TO-220-3
TO-252-2 (1)
ESD (Human Body Model)
ESD (Machine Model)
ESD
ESD
θ
JA
AZ1084
Symbol
T
J
T
STG
T
LEAD
Value
150
-65 to 150
260
60
60
60
100
2000
400
Unit
o
o
C
C
o
C
o
C/W
V
V
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.
Note 2: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical
specifications do not apply when operating the device outside of its operating ratings. The maximum allowable
power dissipation is a function of the maximum junction temperature, T
J(max),
the junction-to-ambient thermal
resistance,
θ
JA,
and the ambient temperature, T
A.
The maximum allowable power dissipation at any ambient tem-
perature is calculated using: P
D(max)
=(T
J(max)
-T
A
)/θ
JA.
Exceeding the maximum allowable power dissipation will
result in excessive die temperature, and the regulator will go into thermal shutdown.
Recommended Operating Conditions
Parameter
Input Voltage
Operating Junction Temperature Range
Symbol
V
IN
T
J
0
Min
Max
12
125
Unit
V
o
C
Mar. 2007 Rev. 1. 4
5
BCD Semiconductor Manufacturing Limited
stm32/stm8
