5A Low Dropout Linear Regulator Az1084

Data Sheet
5A LOW DROPOUT LINEAR REGULATOR AZ1084

General Description Features
The AZ1084 is a series of low dropout positive voltage · Low Dropout Voltage: 1.3V Typically at 5A
regulators with a maximum dropout of 1.5V at 5A of · Current Limiting and Thermal Protection
load current. · Output Current: 5A
· Current Limit: 6.5A
The series features on-chip thermal limiting which pro-
vides protection against any combination of overload · Operating Junction Temperature Range:0 to 125oC
and ambient temperatures that would create excessive · Line Regulation: 0.015% (Typical)
junction temperatures. It also includes a trimmed band- · Load Regulation: 0.2% (Typical)
gap reference and a current limiting circuit.
Applications
The AZ1084 is available in 1.5V, 1.8V, 2.5V, 2.85V,
3.3V and 5.0V versions. The fixed versions integrate
· High Efficiency Linear Regulators
the adjust resistors. It is also available in an adjustable
· Battery Chargers
version which can set the output voltage with two
external resistors. · Post Regulation for Switching Supply
· Microprocessor Supply
The AZ1084 series is available in standard packages of · Desktop PCs, RISC and Embedded Processors'
TO-263-2, TO-263-3, TO-220 and TO-252. Supply
TO-263-3 TO-263-2 TO-252 TO-220
Figure 1. Package Types of AZ1084
Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
1
Data Sheet

Pin Configuration
T Package D Package
(TO-220) (TO-252)
3 INPUT
3 INPUT
2 OUTPUT
2 OUTPUT
1 ADJ/GND
1 ADJ/GND
S Package S Package
(TO-263-3) (TO-263-2)
3 INPUT 3 INPUT
2 OUTPUT 2 OUTPUT (TAB)
1 ADJ/GND 1 ADJ/GND
Figure 2. Pin Configuration of AZ1084 (Top View)
Functional Block Diagram
3
INPUT
Thermal -
Protection +
2
OUTPUT
For Adjustable Output, disconnect A1 and A2, connect B

A1 A2
For Fixed Output, connect A1 and A2, disconnect B
1 ADJ/
B
GND
Figure 3. Functional Block Diagram of AZ1084
2
Data Sheet

Ordering Information
AZ1084 -
E1: Lead Free

Circuit Type Blank: Tin Lead
TR: Tape and Reel
Blank: Tube
Package ADJ: Adjustable Output

D: TO-252 1.5: Fixed Output 1.5V
T: TO-220 1.8: Fixed Output 1.8V
S: TO-263-3 2.5: Fixed Output 2.5V
S2: TO-263-2 2.85: Fixed Output 2.85V
3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
Tempera- Part Number Marking ID Packing

Package
ture Range Tin Lead Lead Free Tin Lead Lead Free Type
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
TO-252 0 to 125oC
AZ1084T-ADJ AZ1084T-ADJE1 AZ1084T-ADJ AZ1084T-ADJE1 Tube
AZ1084T-1.5 AZ1084T-1.5E1 AZ1084T-1.5 AZ1084T-1.5E1 Tube
TO-220 0 to 125oC AZ1084T-2.5 AZ1084T-2.5E1 AZ1084T-2.5 AZ1084T-2.5E1 Tube
3
Data Sheet

Ordering Information (Continued)
Tempera- Part Number Marking ID Packing

Package
ture Range Tin Lead LeadFree Tin Lead LeadFree Type
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
TO-263-3 0 to 125oC
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
TO-263-2 0 to 125oC
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
4
Data Sheet

Absolute Maximum Ratings (Note 1)
Parameter Symbol Min Max Unit
Operating Junction Temperature Range TJ 150 oC
Storage Temperature Range TS -65 150 o

C
Lead Temperature (Soldering, 10 sec.) TLEAD 300 o

C
ESD (Human Body Model) ESD 2000 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.
Recommended Operating Conditions
Parameter Symbol Min Max Unit
Input Voltage VIN 12 V
Operating Junction Temperature Range TJ 0 125 o

C
5
Data Sheet

Electrical Characteristics
Typicals and limits appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over
the entire operating junction temperature range.
Parameter Symbol Conditions Min Typ Max Unit

AZ1084-ADJ,
Reference Voltage VREF IOUT = 10mA, VIN -VOUT = 3V, 1.238 1.250 1.262 V
10mA ≤ IOUT ≤ 5A, 1.5V ≤ VIN - VOUT ≤ 5V 1.225 1.250 1.270
AZ1084-1.5,
IOUT = 0mA, VIN = 4.5V, 1.485 1.5 1.515 V
10mA≤ IOUT ≤ 5A, 3.1V≤ VIN ≤ 6V 1.47 1.5 1.53
AZ1084-1.8,
IOUT = 0mA, VIN = 4.8V, 1.782 1.8 1.818 V
10mA≤ IOUT ≤ 5A, 3.4V≤ VIN ≤ 6V 1.764 1.8 1.836
AZ1084-2.5,
Output Voltage VOUT IOUT = 0mA, VIN = 5.5V, 2.475 2.5 2.525 V
10mA≤ IOUT ≤ 5A, 4.1V≤ VIN ≤ 7V 2.45 2.5 2.55
AZ1084-2.85,
IOUT = 0mA, VIN = 6V, 2.822 2.85 2.879 V
10mA≤ IOUT ≤ 5A, 4.5V≤ VIN ≤ 8V 2.793 2.85 2.907
AZ1084-3.3,
IOUT = 0mA, VIN = 6.3V, 3.267 3.3 3.333 V
10mA≤ IOUT ≤ 5A, 4.9V≤ VIN ≤ 8V 3.234 3.3 3.366
AZ1084-5.0,
IOUT = 0mA, VIN = 8V, 4.95 5 5.05 V
10mA≤ IOUT ≤ 5A, 6.6V≤ VIN ≤ 10V 4.9 5 5.1
AZ1084-ADJ, 0.015 0.2 %

IOUT = 10mA, 2.85V ≤ VIN ≤ 10V 0.035 0.2
AZ1084-1.5, 0.5 6 mV
IOUT = 10mA, 3.1V ≤ VIN ≤ 10V 1 6
AZ1084-1.8, 0.5 6 mV
IOUT = 10mA, 3.4V ≤ VIN ≤ 10V 1 6
Line Regulation ∆VOUT
AZ1084-2.5, 0.5 6 mV
IOUT = 10mA, 4.1V ≤ VIN ≤ 10V 1 6
AZ1084-2.85, 0.5 6 mV
IOUT = 10mA, 4.5V ≤ VIN ≤ 10V 1 6
AZ1084-3.3, 0.5 6 mV
IOUT = 10mA, 4.9V ≤ VIN ≤ 10V 1 6
AZ1084-5.0, 0.5 10 mV
IOUT = 10mA, 6.6V ≤ VIN ≤ 10V 1 10
6
Data Sheet

Electrical Characteristics (Continued)
Typicals and limits appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over
the entire operating junction temperature range.
Parameter Symbol Conditions Min Typ Max Unit
AZ1084-ADJ, 0mA≤ IOUT ≤ 5A, 0.1 0.3 %
VIN - VOUT = 3V 0.2 0.4
AZ1084-1.5, 0mA≤ IOUT ≤ 5A, 3 15 mV

VIN - VOUT = 3V 7 20
AZ1084-1.8, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-2.5, 0mA≤ IOUT ≤ 5A, 3 15 mV

Load Regulation ∆VOUT
AZ1084-2.85, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-3.3, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-5.0, 0mA≤ IOUT ≤ 5A, 5 20 mV

VIN - VOUT = 3V 10 35
Dropout Voltage IO = 5A, ∆VREF,∆VOUT= 1% 1.3 1.5 V

Current Limit ILIMIT VIN - VOUT = 3V, 5.5 6.5 A
Minimum VIN = 10V (AZ1084-ADJ) 3 10 mA
Load Current
Quiescent Current VIN = 10V (AZ1084) 5 10 mA
Ripple Rejection fRIPPLE = 120Hz, COUT = 25µF Tantalum, 60 72 dB
IOUT = 5A, VIN - VOUT = 3V
Adjust Pin Current VIN = 4.25V, IOUT = 10mA 55 120 µA

Adjust Pin Current 10mA ≤ IOUT ≤ 5A, 0.2 5 µA
Change 1.5V≤ (VIN -VOUT) ≤ 4.5V
Temperature IOUT = 10mA, VIN - VOUT = 1.5 0.5 %

Stability
Long Term Stability TA = 125oC, 1000Hrs 0.5 %
RMS Noise 10Hz ≤ f ≤ 10kHz 0.003 %

(% of VOUT)
Thermal Resistance θJC TO-263 3 oC/W

Junction -to-Case TO-220 3
TO-252 4
7
Data Sheet

Typical Performance Characteristics
1.50 2.53
1.45
1.40
2.52
1.35
Dropout Voltage (V)
1.30
Output Voltage (V)

2.51
1.25
1.20
1.15 2.50
1.10
1.05 2.49
1.00
0.95
2.48
0.90
0.85
0.80 2.47
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 25 50 75 100 125
o
Output Current (A) TJ ( C)
Figure 4. Dropout Voltage vs. Output Current Figure 5. Output Voltage vs. Temperature
0.0 80
75
70
Adjust Pin Current (uA)
-0.2
Line Regulation (mV)
65
60
-0.4 55
50
45
-0.6
40
35
-0.8
30
25
-1.0 20
0 25 50 75 100 125 0 1 2 3 4 5
o
TJ ( C) Output Current (A)
Figure 6. Line Regulation vs. Temperature Figure 7. Adjust Pin Current vs. Output Current
8
Data Sheet

Typical Performance Characteristics (Continued)
1.40 8
Short Circuit Current (A)

Dropout Voltage (V)
1.35 6
1.30 4
1.25 2
1.20 0
0 25 50 75 100 125 0 2 4 6 8 10 12
o Dropout Voltage (V)
TJ ( C)
Figure 8. Dropout Voltage vs. Temperature Figure 9. Short Circuit Current vs. Dropout Voltage
Figure 10. Load Transient Response Figure 11. Line Transient Response
9
Data Sheet

Typical Application
AZ1084-ADJ VOUT
VIN
VIN VOUT
+ + 22µF
10µF ADJ
Tantalum Tantalum
R1
VOUT=VREF* (1+R2/R1) + IADJ * R2 R2
AZ1084-5.0
VIN VOUT
VIN VOUT
+ GND +
10µF 22µF
Tantalum
Tantalum
Figure 12. Typical Applications of AZ1084
10
Data Sheet

Mechanical Dimensions
TO-263-3 Unit: mm(inch)
4.070(0.160) 3°
4.820(0.190)
9.650(0.380)
10.290(0.405) 1.150(0.045) 7.420(0.292)
8.840(0.348) 1.270(0.050)
1.390(0.055)
1.390(0.055)
70°
7°
5.600(0.220)
0.020(0.001)
8.640(0.340)
9.650(0.380)
0.250(0.010)
2.640(0.104)
14.760(0.581) 2.700(0.106)
0.360(0.014) 7.980(0.314)
15.740(0.620)
2.390(0.094)
2.690(0.106)
0.400(0.016)
7°
1.150(0.045) 3° 2.200(0.087)
1.390(0.055)
0.510(0.020) 2°
0.990(0.039) 8°
0.380(0.015)
2.540(0.100) 2.540(0.100) 2.540(0.100)
0° 2.540(0.100)
6°
11
Data Sheet

Mechanical Dimensions (Continued)
TO-263-2 Unit: mm(inch)
4.070(0.160) 3°
4.820(0.190)
9.650(0.380)
10.290(0.405) 1.150(0.045) 7.420(0.292)
8.840(0.348) 1.270(0.050)
1.390(0.055)
1.390(0.055)
70°
7°
5.600(0.220)
8.640(0.340)
9.650(0.380)
0.020(0.001)
0.250(0.010)
2.640(0.104)
14.760(0.581) 2.700(0.106)
15.740(0.620) 0.360(0.014) 7.980(0.314)
2.390(0.094)
2.690(0.106)
0.400(0.016)
7°
1.150(0.045) 3° 2.200(0.087)
1.500(0.059)
1.390(0.055)
0.510(0.020) 2°
0.990(0.039) 8°
0.380(0.015)
2.540(0.100) 2.540(0.100) 2.540(0.100)
2.540(0.100)
0°
6°
12
Data Sheet

TO-220 Unit: mm(inch)
9.660(0.380)
10.660(0.420) 2.580(0.102)
φ3.560(0.140) 3.380(0.133)
0.550(0.022)
4.060(0.160) 1.350(0.053)
1.850(0.073)
0.200(0.008)
14.230(0.560)
16.510(0.650)
7°
8.520(0.335)
9.520(0.375)
φ1.500(0.059)
3.560(0.140)
4.820(0.190)
27.880(1.098)
30.280(1.192)
2.080(0.082)
2.880(0.113)
3° 7°
1.160(0.046) 0.381(0.015)
1.760(0.069)
60°
0.813(0.032)
8.763(0.345)
60°
0.381(0.015)
0.356(0.014)
2.540(0.100) 2.540(0.100) 0.406(0.016)
13
Data Sheet

TO-252 Unit: mm(inch)
6.380(0.251) 2.180(0.086)
5.230(0.206) 6.680(0.263) 2.380(0.094)
5.430(0.214) 0.460(0.018) 0.400(0.016)×45°
0.580(0.023)
1.080(0.043) 8°
5.360(0.211)
5.560(0.219)
1.320(0.052)
10.100(0.398)
9.500(0.374)
0.650(0.026)
0.950(0.037)
0.480(0.019)
0.540(0.021)
0.020(0.001)
0.120(0.005)
5° 5°
0.750(0.030)
0.850(0.033) 0.600(0.024)
2.240(0.088) 0.640(0.025) 1°
1.400(0.055)
1.760(0.069)
2.600(0.102)
3.000(0.118)
0.780(0.031) 7°
2.340(0.092)
2.240(0.088) 0.510(0.020)
2.340(0.092)
2.90° 2.90°
3.10° 3.10°
14
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Data Sheet

5A LOW DROPOUT LINEAR REGULATOR AZ1084

TO-263-3 TO-263-2 TO-252 TO-220

Figure 1. Package Types of AZ1084

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

2 OUTPUT 2 OUTPUT (TAB)

Figure 2. Pin Configuration of AZ1084 (Top View)

Functional Block Diagram

For Adjustable Output, disconnect A1 and A2, connect B

Figure 3. Functional Block Diagram of AZ1084

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

E1: Lead Free

Package ADJ: Adjustable Output

Tempera- Part Number Marking ID Packing

AZ1084D-ADJ AZ1084D-ADJE1 AZ1084D-ADJ AZ1084D-ADJE1 Tube

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

Tempera- Part Number Marking ID Packing

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

Parameter Symbol Min Max Unit

Operating Junction Temperature Range TJ 150 oC

Storage Temperature Range TS -65 150 o

Lead Temperature (Soldering, 10 sec.) TLEAD 300 o

ESD (Human Body Model) ESD 2000 V

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Input Voltage VIN 12 V

Operating Junction Temperature Range TJ 0 125 o

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

Parameter Symbol Conditions Min Typ Max Unit

AZ1084-ADJ, 0.015 0.2 %

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

AZ1084-1.5, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-1.8, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-2.5, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-2.85, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-3.3, 0mA≤ IOUT ≤ 5A, 3 15 mV

AZ1084-5.0, 0mA≤ IOUT ≤ 5A, 5 20 mV

Dropout Voltage IO = 5A, ∆VREF,∆VOUT= 1% 1.3 1.5 V

Adjust Pin Current VIN = 4.25V, IOUT = 10mA 55 120 µA

Temperature IOUT = 10mA, VIN - VOUT = 1.5 0.5 %

RMS Noise 10Hz ≤ f ≤ 10kHz 0.003 %

Thermal Resistance θJC TO-263 3 oC/W

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

Output Voltage (V)

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

Short Circuit Current (A)

Oct. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

5A LOW DROPOUT LINEAR REGULATOR AZ1084

VOUT=VREF* (1+R2/R1) + IADJ * R2 R2

Figure 12. Typical Applications of AZ1084