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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 provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. It also includes a trimmed bandgap 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.
AZ1084
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 125oC 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
TO-263-3
TO-263-2
TO-252
TO-220
Figure 1. Package Types of AZ1084
Oct. 2005 Rev. 1. 2 1
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Pin Configuration
T Package (TO-220)
3 2 1 INPUT OUTPUT ADJ/GND 1 ADJ/GND 2 OUTPUT
AZ1084
D Package (TO-252)
3 INPUT
S Package (TO-263-3)
3 2 1 INPUT OUTPUT ADJ/GND
S Package (TO-263-2)
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 Oct. 2005 Rev. 1. 2 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 T: TO-220 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
Temperature 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
0 to 125oC
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
0 to
125oC
AZ1084T-2.5 AZ1084T-2.85 AZ1084T-3.3 AZ1084T-5.0
Oct. 2005 Rev. 1. 2 3
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Ordering Information (Continued)
Package Temperature 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 125oC 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 125oC 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.
Oct. 2005 Rev. 1. 2 4
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Absolute Maximum Ratings (Note 1)
Parameter Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec.) ESD (Human Body Model) Symbol TJ TS TLEAD ESD -65 Min Max 150 150 300 2000 Unit
oC o
AZ1084
C C
o
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 Input Voltage Operating Junction Temperature Range Symbol VIN TJ 0 Min Max 12 125 Unit V
o
C
Oct. 2005 Rev. 1. 2 5
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR 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 Reference Voltage Symbol VREF Conditions AZ1084-ADJ, IOUT = 10mA, VIN -VOUT = 3V, 10mA IOUT 5A, 1.5V VIN - VOUT 5V AZ1084-1.5, IOUT = 0mA, VIN = 4.5V, 10mA IOUT 5A, 3.1V VIN 6V AZ1084-1.8, IOUT = 0mA, VIN = 4.8V, 10mA IOUT 5A, 3.4V VIN 6V AZ1084-2.5, IOUT = 0mA, VIN = 5.5V, 10mA IOUT 5A, 4.1V VIN 7V AZ1084-2.85, IOUT = 0mA, VIN = 6V, 10mA IOUT 5A, 4.5V VIN 8V AZ1084-3.3, IOUT = 0mA, VIN = 6.3V, 10mA IOUT 5A, 4.9V VIN 8V AZ1084-5.0, IOUT = 0mA, VIN = 8V, 10mA IOUT 5A, 6.6V VIN 10V AZ1084-ADJ, IOUT = 10mA, 2.85V VIN 10V AZ1084-1.5, IOUT = 10mA, 3.1V VIN 10V AZ1084-1.8, IOUT = 10mA, 3.4V VIN 10V AZ1084-2.5, IOUT = 10mA, 4.1V VIN 10V AZ1084-2.85, IOUT = 10mA, 4.5V VIN 10V AZ1084-3.3, IOUT = 10mA, 4.9V VIN 10V AZ1084-5.0, IOUT = 10mA, 6.6V VIN 10V Min 1.238 1.225 Typ 1.250 1.250 Max 1.262 1.270 Unit
AZ1084
V
1.485 1.47
1.5 1.5
1.515 1.53
V
1.782 1.764
1.8 1.8
1.818 1.836
V
Output Voltage
VOUT
2.475 2.45
2.5 2.5
2.525 2.55
V
2.822 2.793
2.85 2.85
2.879 2.907
V
3.267 3.234
3.3 3.3
3.333 3.366
V
4.95 4.9
5 5 0.015 0.035 0.5 1 0.5 1 0.5 1 0.5 1 0.5 1 0.5 1
5.05 5.1 0.2 0.2 6 6 6 6 6 6 6 6 6 6 10 10
V % mV mV mV mV mV mV
Line Regulation
VOUT
Oct. 2005 Rev. 1. 2 6
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR 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 AZ1084-ADJ, 0mA IOUT 5A, VIN - VOUT = 3V AZ1084-1.5, 0mA IOUT 5A, VIN - VOUT = 3V AZ1084-1.8, 0mA IOUT 5A, VIN - VOUT = 3V Load Regulation VOUT AZ1084-2.5, 0mA IOUT 5A, VIN - VOUT = 3V AZ1084-2.85, 0mA IOUT 5A, VIN - VOUT = 3V AZ1084-3.3, 0mA IOUT 5A, VIN - VOUT = 3V AZ1084-5.0, 0mA IOUT 5A, VIN - VOUT = 3V Dropout Voltage Current Limit Minimum Load Current Quiescent Current Ripple Rejection ILIMIT IO = 5A, VREF,VOUT= 1% VIN - VOUT = 3V, VIN = 10V (AZ1084-ADJ) VIN = 10V (AZ1084) fRIPPLE = 120Hz, COUT = 25F Tantalum, IOUT = 5A, VIN - VOUT = 3V VIN = 4.25V, IOUT = 10mA 10mA IOUT 5A, 1.5V (VIN -VOUT) 4.5V IOUT = 10mA, VIN - VOUT = 1.5 TA = 125oC, 1000Hrs 10Hz f 10kHz JC TO-263 TO-220 TO-252 60 5.5 Min Typ 0.1 0.2 3 7 3 7 3 7 3 7 3 7 5 10 1.3 6.5 3 5 72 10 10 Max 0.3 0.4 15 20 15 20 15 20 15 20 15 20 20 35 1.5 Unit %
AZ1084
mV mV mV mV mV mV V A mA mA dB
Adjust Pin Current Adjust Pin Current Change Temperature Stability Long Term Stability RMS Noise (% of VOUT) Thermal Resistance Junction -to-Case
55 0.2
120 5
A A % % %
oC/W
0.5 0.5 0.003 3 3 4
Oct. 2005 Rev. 1. 2 7
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics
1.50 1.45 1.40
2.52 2.53
AZ1084
Dropout Voltage (V)
1.35
Output Voltage (V)
1.30 1.25 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 0.0
2.51
2.50
2.49
2.48
2.47
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
Output Current (A)
TJ ( C)
o
Figure 4. Dropout Voltage vs. Output Current
Figure 5. Output Voltage vs. Temperature
0.0
80 75
Line Regulation (mV)
-0.2
Adjust Pin Current (uA)
70 65 60 55 50 45 40 35
-0.4
-0.6
-0.8
30 25
-1.0 0 25 50 75 100 125
o
20 0 1 2 3 4 5
TJ ( C)
Output Current (A)
Figure 6. Line Regulation vs. Temperature
Figure 7. Adjust Pin Current vs. Output Current
Oct. 2005 Rev. 1. 2 8
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AZ1084
1.40
8 7
1.35
Short Circuit Current (A)
0 25 50 75 100 125
Dropout Voltage (V)
6 5 4 3 2 1
1.30
1.25
1.20
0 0 2 4 6 8 10 12
TJ ( C)
o
Dropout Voltage (V)
Figure 8. Dropout Voltage vs. Temperature
Figure 9. Short Circuit Current vs. Dropout Voltage
Figure 10. Load Transient Response
Figure 11. Line Transient Response
Oct. 2005 Rev. 1. 2 9
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Typical Application
VOUT
AZ1084
VIN
+
10F Tantalum
AZ1084-ADJ VOUT VIN ADJ R1
+
22F Tantalum
VOUT=VREF* (1+R2/R1) + IADJ * R2
R2
VIN 10F Tantalum
AZ1084-5.0
+
VIN
VOUT VOUT
GND
+
22F Tantalum
Figure 12. Typical Applications of AZ1084
Oct. 2005 Rev. 1. 2 10
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions TO-263-3 Unit: mm(inch) AZ1084
4.070(0.160) 4.820(0.190)
3
9.650(0.380) 10.290(0.405) 8.840(0.348)
70
1.270(0.050) 1.390(0.055)
1.150(0.045) 1.390(0.055) 7
7.420(0.292)
8.640(0.340) 9.650(0.380)
0.020(0.001) 0.250(0.010)
14.760(0.581) 15.740(0.620) 2.390(0.094) 2.690(0.106)
1.150(0.045) 1.390(0.055) 0.510(0.020) 0.990(0.039) 2.540(0.100) 2.540(0.100)
3
2.640(0.104) 2.700(0.106) 0.360(0.014) 0.400(0.016) 7 2.200(0.087)
5.600(0.220)
7.980(0.314)
2 8
0.380(0.015) 2.540(0.100) 0 6 2.540(0.100)
Oct. 2005 Rev. 1. 2 11
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions (Continued) TO-263-2 Unit: mm(inch) AZ1084
4.070(0.160) 4.820(0.190)
3
9.650(0.380) 10.290(0.405) 8.840(0.348)
70
1.270(0.050) 1.390(0.055)
1.150(0.045) 1.390(0.055) 7
7.420(0.292)
8.640(0.340) 9.650(0.380)
0.020(0.001) 0.250(0.010)
14.760(0.581) 15.740(0.620) 2.390(0.094) 2.690(0.106)
1.500(0.059)
1.150(0.045) 1.390(0.055) 0.510(0.020) 0.990(0.039) 2.540(0.100)
3
2.640(0.104) 2.700(0.106) 0.360(0.014) 0.400(0.016) 7 2.200(0.087)
2 8
5.600(0.220)
7.980(0.314)
0.380(0.015) 2.540(0.100) 0 6 2.540(0.100)
2.540(0.100)
Oct. 2005 Rev. 1. 2 12
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions (Continued) TO-220 Unit: mm(inch) AZ1084
9.660(0.380) 10.660(0.420) 3.560(0.140) 4.060(0.160)
2.580(0.102) 3.380(0.133)
0.550(0.022) 1.350(0.053)
1.850(0.073)
0.200(0.008)
14.230(0.560) 16.510(0.650)
7
1.500(0.059)
8.520(0.335) 9.520(0.375)
27.880(1.098) 30.280(1.192)
3.560(0.140) 4.820(0.190) 2.080(0.082) 2.880(0.113)
7
3
1.160(0.046) 1.760(0.069)
0.381(0.015)
60 0.813(0.032)
8.763(0.345)
60
0.381(0.015) 2.540(0.100) 2.540(0.100)
0.356(0.014) 0.406(0.016)
Oct. 2005 Rev. 1. 2 13
BCD Semiconductor Manufacturing Limited
Data Sheet 5A LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions (Continued) TO-252 Unit: mm(inch) AZ1084
5.230(0.206) 5.430(0.214)
6.380(0.251) 6.680(0.263) 0.460(0.018) 0.580(0.023)
2.180(0.086) 2.380(0.094) 0.400(0.016) 45
9.500(0.374) 10.100(0.398) 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 0.750(0.030) 0.850(0.033)
1.400(0.055) 1.760(0.069)
5
0.600(0.024) 2.600(0.102) 3.000(0.118)
2.240(0.088) 2.340(0.092)
0.640(0.025) 0.780(0.031) 2.240(0.088) 2.340(0.092)
1 7 0.510(0.020)
2.90 3.10
2.90 3.10
Oct. 2005 Rev. 1. 2 14
BCD Semiconductor Manufacturing Limited
5.360(0.211) 5.560(0.219)
1.080(0.043) 1.320(0.052)
8
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IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications 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 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.
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BCD Semiconductor Manufacturing Limited
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REGIONAL SALES OFFICE
Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 27B, Tower C, 2070, Middle Shen Nan Road, Shenzhen 518031, China Tel: +86-755-8368 3987, Fax: +86-755-8368 3166 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808, Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corporation 3170 De La Cruz Blvd., Suite 105, Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386

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