Diodes AZ39151 User Manual
Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
General Description
The AZ39151 is a 1.5A, high accuracy linear voltage
regulator. It features 375mV dropout voltage at 1.5A
output current and low ground current over all operating conditions .
The AZ39151 is specifically designed for low voltage,
high current output systems, such as PC add-in cards
where their tiny dropout voltage and ground current
values are important attributes.
The AZ39151 has fixed 3.3V, 5.0V versions and
ADJ(1.25V) version.
The AZ39151 is available in TO-252-4 (PPAK) (for
fixed versions) and TO-252-5 (for adjustable version)
packages.
Features
· Minimum Guaranteed Output Current: 1.5A
· Low Dropout Voltage: 375mV at I
· Output Accuracy:
· Low Ground Current
· Internal Current and Thermal Limit
· Reversed-battery and Reversed-lead Insertion
Protection
· Fast Transient Response
· TTL/CMOS Compatible Enable Pin
±1%
OUT
=1.5A
Applications
· Set-top Box
· Hi-end DVD Player/Recorder
· LCD TV/PDP
· LDO Linear Regulator for PC Add-in Cards
· High Efficiency Linear Power Supplies
· SMPS Post Regulator
TO-252-4 (PPAK)
Figure 1. Package Types of AZ39151
Dec. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
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TO-252-5
Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Pin Configuration
D4 Package
TO-252-4 (PPAK)
5
4
3
2
1
Figure 2. Pin Configuration of AZ39151 (Top View)
NC
VOUT
GND
VIN
EN
TO-252-5
Pin Description
Pin Number Pin Name Function
D5 Package
ADJ
5
VOUT
4
GND
3
VIN
2
EN
1
1 EN Enable: TTL/CMOS compatible input. Logic high=enable;
Logic low or open=shutdown
2 VIN Unregulated input
3 GND Ground pin. This pin and TAB are internally connected
4 VOUT Regulated output
5 ADJ/NC Adjustable Output/No Connect
Dec. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Functional Block Diagram
VIN
EN
2
O.V.
I
LIMIT
Reference
4
VOUT
1
Thermal
Shutdown
3
GND
Fixed Version
2
4
VOUTVIN
O.V.
I
LIMIT
EN
1
Dec. 2011 Rev. 1. 9
Reference
5
ADJ
Thermal
Shutdown
3
GND
Adjustable Version
Figure 3. Functional Block Diagram of AZ39151
BCD Semiconductor Manufacturing Limited
3
Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Ordering Information
-
AZ39151
Circuit Type
Package
D4: TO-252-4 (PPAK)
D5: TO-252-5
E1: Lead Free
G1: Green
TR: Tape and Reel
Blank: Tube
3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
ADJ: ADJ Output
Package Temperature
Range
TO-252-4
(PPAK)
o
-40 to 125
TO-252-5
C
Lead Free Green Lead Free Green
AZ39151D4-3.3E1 AZ39151D4-3.3G1 AZ39151D4-3.3E1 AZ39151D4-3.3G1 Tube
AZ39151D4-3.3TRE1 AZ39151D4-3.3TRG1 AZ39151D4-3.3E1 AZ39151D4-3.3G1 Tape & Reel
AZ39151D4-5.0E1 AZ39151D4-5.0G1 AZ39151D4-5.0E1 AZ39151D4-5.0G1 Tube
AZ39151D4-5.0TRE1 AZ39151D4-5.0TRG1 AZ39151D4-5.0E1 AZ39151D4-5.0G1 Tape & Reel
AZ39151D5-ADJE1 AZ39151D5-ADJG1 AZ39151D5-ADJE1 AZ39151D5-ADJG1 Tube
AZ39151D5-ADJTRE1 AZ39151D5-ADJTRG1 AZ39151D5-ADJE1 AZ39151D5-ADJG1 Tape & Reel
Part Number Marking ID Packing
Typ e
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. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Absolute Maximum Ratings (Note 1)
Parameter Symbol
Input Voltage V
Enable Voltage V
Operating Junction Temperature T
Storage Temperature Range T
Lead Temperature (Soldering, 10sec) T
IN
EN
J
STG
LEAD
Va lu e
15 V
15 V
150
-65 to 150
260
Unit
o
C
o
C
o
C
ESD (Human Body Model) ESD 5000 V
ESD (Machine Model) ESD 450 V
Thermal Resistance
θ
JA
TO-252-4 (PPAK) 100
TO-252-5 100
o
C/W
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
Input Voltage V
Enable Voltage V
Operating Junction Temperature T
Dec. 2011 Rev. 1. 9
IN
EN
J
-40 125
BCD Semiconductor Manufacturing Limited
5
13.5 V
13.5 V
o
C
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