Page 1
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
1
TO-252-5
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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
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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
Page 6
Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Electrical Characteristics
Operating Conditions: V
face applies over -40
IN=VOUT
o
C≤TJ≤125oC.
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage
Line Regulation V
Load Regulation V
Output Voltage
Temperature Coefficient
(Note 2)
Dropout Voltage (Note 3)
Ground Current I
Standby Current I
Dropout Ground Pin Current I
Short Circuit Current I
Output Noise Voltage (rms) 10Hz to 100kHz,
Minimum Load Current I
Power Supply Ripple Rejection PSRR f=120Hz, I
Enable Input
Enable Voltage
Enable Current
Shutdown Output Current I
+1V, I
(∆V
=10mA, CIN=10µF, C
OUT
=10µF, TJ=25oC, unless otherwise specified. The Bold-
OUT
-1 1
V
OUT
RLINE
RLOAD
∆V
/∆T 100 500
OUT
OUT/VOUT
V
DROP
GND
STD
GND(DO)
SHORT
LOAD (MIN)
V
EN
I
EN
OUT (SHDN)
10mA≤I
V
OUT
V
OUT
10mA≤I
≤1.5A,
OUT
+1V≤VIN≤13.5V
-2 2
+1V≤VIN≤13.5V 3 25 mV
≤1.5A 10 50 mV
OUT
)/∆T
I
=100mA 80 200 mV
OUT
∆V
=1%
OUT
I
=750mA 5 10 mA
OUT
=1.5A 17 34 mA
I
OUT
=750mA 260 mV
I
OUT
=1.5A 375 700 mV
I
OUT
VIN=13.5V, VEN=0V 130 220 µA
VIN≤V
OUT(NOMINAL)
V
=0V 2.8 A
OUT
=100mA
I
OUT
OUT
-0.5V 5 mA
=750mA 49 65 dB
Logic low (off) 0.8
Logic high (on) 2.25
VEN=V
IN
V
=0.8V 4
EN
VEN≤0.8V, VIN≤8V,
V
=0V
OUT
20 100
200 µV
5mA
15 35
5 10 µA
µV/
ppm/
µA
%
o
C
o
C
V
Note 2: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature
range.
Note 3: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value
which is measured at V
+1V applied to VIN.
OUT
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Typical Performance Characteristics
500
450
400
350
300
250
200
150
Dropout Voltage (mV)
100
50
0
0 250 500 750 1000 1250 1500
VIN=6V
TJ=25oC
Output Current (mA)
Figure 4. Dropout Voltage vs. Output Current
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
Output Voltage (V)
1.5
1.0
0.5
0.0
0 2 4 6 8 10 12
10mA
1500mA
Input Voltage (V)
VEN=2.5V
TJ=25oC
700
650
600
550
500
450
400
350
300
Dropout Voltage (mV)
250
200
150
100
-25 0 25 50 7 5 100 125
V
OUT=VOUT(NOMINAL)
I
=1.5A
OUT
x99%
Junction Temperature (oC)
Figure 5. Dropout Voltage vs. Junction Temperature
45
40
35
30
25
20
15
Ground Current (mA)
10
5
0
024681012
I
OUT
I
OUT
I
OUT
Input Voltage (V)
VEN=3.3V
TJ=25oC
=10mA
=750mA
=1500mA
Figure 6. Output Voltage vs. Input Voltage
Dec. 2011 Rev. 1. 9
Figure 7. Ground Current vs. Input Voltage
BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Typical Performance Characteristics (Continued)
27
24
21
18
15
12
9
Ground Current (mA)
6
3
0
-3
0 200 400 600 800 1000 1200 1400
Output Current (mA)
Figure 8. Ground Current vs. Output Current
11
10
9
8
7
Ground Current (mA)
VIN=VEN=6V
I
OUT
VIN=6V
TJ=25oC
=750mA
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
Ground Current (mA)
0.50
0.25
0.00
-40-200 20406080100120
VIN=VEN=6V
I
=10mA
OUT
Junction Temperature (oC)
Figure 9. Ground Current vs. Junction Temperature
25
24
23
22
21
Ground Current (mA)
20
VIN=VEN=6V
=1.5A
I
OUT
6
5
-40 -20 0 20 40 60 80 100 120
Junction Temperature (oC)
Figure 10. Ground Current vs. Junction Temperature
19
18
-40 -20 0 20 40 60 80 100 120
Junction Temperature (oC)
Figure 11. Ground Current vs. Junction Temperature
Dec. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Typical Performance Characteristics (Continued)
Output Voltage (V)
5.010
5.005
5.000
4.995
4.990
4.985
4.980
4.975
4.970
-25 0 25 50 75 100 125
Junction Temperature (oC)
VIN=VEN=6V
I
=10mA
OUT
4.5
4.0
3.5
3.0
2.5
2.0
Short Circuit Current (A)
1.5
1.0
0.5
-25 0 25 50 75 100 125
Junction Temperature (oC)
VIN=VEN=6V
Figure 12. Short Circuit Current vs. Junction Temperature Figure 13. Output Voltage vs. Junction Temperature
20
18
16
14
12
10
8
Enable Current (µA)
6
4
2
0
-25 0 25 50 75 100 125
Junction Temperature (oC)
VIN=VEN=6V
I
=10mA
OUT
4
2
0
(2V/Div)
IN
V
∆
-2
100
0
(100mV/Div)
OUT
-100
V
∆
-200
Time (10µs/Div)
Figure 14. Enable Current vs. Junction Temperature
Dec. 2011 Rev. 1. 9
Figure 15. Line Transient
(Conditions: VIN=5 to 7V, I
OUT
=1.5A, C
OUT
=10µF)
BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Typical Performance Characteristics (Continued)
1.5
1
0.5
(0 .5 V/D iv )
OUT
0
V
∆
2
1
(1A/Div)
OUT
0
I
-1
(Conditions: V
25
20
10mA
Time (200µs/Div)
Figure 16. Load Transient
=6V, I
IN
=10mA to 1.5A, CIN=C
OUT
Package: TO-252-4 (PPAK)
Heatsink Size: 45*45mm
OUT
2
=10µF)
80
70
60
50
40
PSRR (dB)
30
20
10
0
10 100 1k 10k 100k
Frequency (Hz)
Figure 17. PSRR vs. Frequency
(Conditions: V
=6V, I
IN
=10mA, CIN=C
OUT
OUT
=10µF)
15
10
Power Dissipation (W)
5
0
-25 0 25 50 75 100 125
Case Temperature (oC)
Figure 18. Power Dissipation vs. Case Temperature
Dec. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Typical Application
V
IN
V
EN
C
10µF
+
IN
2
VIN
1
EN
AZ39151
VOUT
NC
GND
3
4
5
V
OUT
+
C
OUT
10µF
Fixed Version
V
IN
V
EN
C
10µF
+
IN
2
VIN
1
EN
AZ39151
VOUT
ADJ
GND
3
4
R1
5
R2
V
OUT
+
C
OUT
10µF
=1.25*(1+R1/R2) V
V
OUT
Dec. 2011 Rev. 1. 9
Adjustable Version
Figure 19. Typical Application of AZ39151
BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Mechanical Dimensions
TO-252-4(PPAK) Unit: mm(inch)
6.400(0.252)
1.300(0.051)
1.500(0.059)
6.600(0.260)
5.700(0.224)
5.900(0.232)
5.200(0.205)
5.400(0.213)
2.200(0.087)
2.400(0.094)
0.460(0.018)
0.560(0.022)
5.400(0.213)
5.600(0.220)
2.440(0.096)
2.640(0.104)
4.980(0.196)
5.180(0.204)
0.800(0.031)
1.000(0.039)
0.450(0.018)
0.550(0.022)
9.250(0.364)
9.750(0.384)
0.950(0.037)
1.450(0.057)
0.460(0.018)
0.560(0.022)
Dec. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
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Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
Mechanical Dimensions
TO-252-5 Unit: mm(inch)
6.350(0.250)
6.650(0.262)
5.200(0.205)
5.400(0.213)
0.430(0.017)
0.580(0.023)
2.200(0.087)
2.400(0.094)
9.500(0.374)
9.900(0.390)
1.270(0.050)
TYP
2.540(0.100)
TYP
0.000(0.000)
0.127(0.005)
0.400(0.016)
0.600(0.024)
0.430(0.017)
0.580(0.023)
1.400(0.055)
1.780(0.070)
5.400(0.213)
5.700(0.224)
2.550(0.100)
2.900(0.114)
3.800(0.150)
REF
Dec. 2011 Rev. 1. 9
BCD Semiconductor Manufacturing Limited
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BCD Semiconductor Manufacturing Limited
IMPORTANT NOTICE
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
other rights nor the rights of others.
other rights nor the rights of others.
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