BCD AZ2940D-2.5 1a ultra low dropout linear regulator Datasheet

Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
General Description
Features
The AZ2940 is a low dropout three-terminal regulator
with a typical dropout of 280mV at 1A output current.
·
·
Minimum Guaranteed Output Current: 1A
Dropout Voltage at IOUT=1A: 280mV
·
·
·
·
Output Accuracy: ± 1%
Low Ground Current
Internal Current Limit and Thermal Protection
Reversed-battery and Reversed-lead Insertion
Protection
Fast Transient Response
The AZ2940 provides current limit and thermal shutdown. On-chip thermal shutdown provides protection
against any combination of high current and ambient
temperature that would create excessive junction temperatures.
·
The AZ2940 has 2.5V, 3.3V and 5.0V versions.
The AZ2940 is available in the industry standard TO220-3, TO-263-3 and TO-252-2 (1) power packages.
Applications
·
·
·
·
·
·
·
TO-220-3
LCD TV
Set Top Box
LCD Monitor
SMPS Post Regulator
Laptop, Palmtop and Notebook
Portable Instrumentation
USB Power Supply
TO-263-3
TO-252-2 (1)
Figure 1. Package Types of AZ2940
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
1
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Pin Configuration
T Package
(TO-220-3)
S Package
(TO-263-3)
D Package
(TO-252-2 (1))
3
VOUT
3
VOUT
3
VOUT
2
GND
2
GND
2
GND
1
VIN
1
VIN
1
VIN
Figure 2. Pin Configuration of AZ2940 (Top View)
Pin Description
Pin Number
Pin Name
Function
1
VIN
Unregulated Input.
2
GND
Ground pin. This pin and TAB are internally connected.
3
VOUT
Regulated Output.
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Functional Block Diagram
VIN
1
VOUT
2
GND
16V
1.24V
Reference
3
+
-
Thermal
Shutdown
Figure 3. Functional Block Diagram of AZ2940
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Ordering Information
-
AZ2940
E1: Lead Free
Blank: Tin Lead
Circuit Type
TR: Tape and Reel
Blank: Tube
Package
T: TO-220-3
S: TO-263-3
D: TO-252-2 (1)
Package
Temperature
Range
TO-220-3
-40 to 125oC
TO-263-3
TO-252-2
(1)
-40 to 125oC
-40 to 125oC
2.5: Fixed Output 2.5V
3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
Part Number
Marking ID
Tin Lead
Lead Free
Packing
Type
Tin Lead
Lead Free
AZ2940T-2.5
AZ2940T-2.5E1
AZ2940T-2.5
AZ2940T-2.5E1
Tube
AZ2940T-3.3
AZ2940T-3.3E1
AZ2940T-3.3
AZ2940T-3.3E1
Tube
AZ2940T-5.0
AZ2940T-5.0E1
AZ2940T-5.0
AZ2940T-5.0E1
Tube
AZ2940S-2.5
AZ2940S-2.5E1
AZ2940S-2.5
AZ2940S-2.5E1
Tube
AZ2940S-2.5TR
AZ2940S-2.5TRE1
AZ2940S-2.5
AZ2940S-2.5E1
Tape & Reel
AZ2940S-3.3
AZ2940S-3.3E1
AZ2940S-3.3
AZ2940S-3.3E1
Tube
AZ2940S-3.3TR
AZ2940S-3.3TRE1
AZ2940S-3.3
AZ2940S-3.3E1
Tape & Reel
AZ2940S-5.0
AZ2940S-5.0E1
AZ2940S-5.0
AZ2940S-5.0E1
Tube
AZ2940S-5.0TR
AZ2940S-5.0TRE1
AZ2940S-5.0
AZ2940S-5.0E1
Tape & Reel
AZ2940D-2.5
AZ2940D-2.5E1
AZ2940D-2.5
AZ2940D-2.5E1
Tube
AZ2940D-2.5TR
AZ2940D-2.5TRE1
AZ2940D-2.5
AZ2940D-2.5E1
Tape & Reel
AZ2940D-3.3
AZ2940D-3.3E1
AZ2940D-3.3
AZ2940D-3.3E1
Tube
AZ2940D-3.3TR
AZ2940D-3.3TRE1
AZ2940D-3.3
AZ2940D-3.3E1
Tape & Reel
AZ2940D-5.0
AZ2940D-5.0E1
AZ2940D-5.0
AZ2940D-5.0E1
Tube
AZ2940D-5.0TR
AZ2940D-5.0TRE1
AZ2940D-5.0
AZ2940D-5.0E1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
4
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Absolute Maximum Ratings (Note 1)
Parameter
Input Voltage
Symbol
Value
Unit
VIN
16
V
TJ
150
oC
TSTG
-65 to 150
o
TLEAD
260
o
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
θJA
Thermal Resistance
C
C
TO-220-3
60
TO-263-3
60
TO-252-2 (1)
100
o
C/W
ESD (Human Body Model)
ESD
5000
V
ESD (Machine Model)
ESD
300
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
Symbol
Min
VIN
TJ
Mar. 2007 Rev. 1. 6
-40
Max
Unit
13.2
V
125
o
C
BCD Semiconductor Manufacturing Limited
5
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Electrical Characteristics
AZ2940-2.5 Electrical Characteristics
Operating Conditions: VIN=3.5V, IOUT=10mA, CIN=10µF, COUT=10µF, TJ=25oC, unless otherwise specified.
The Boldface applies over -40oC≤TJ≤125oC.
Parameter
Symbol
Output Voltage
VOUT
Condition
Min
Typ
Max
Unit
IOUT=10mA
2.475
2.5
2.525
V
10mA≤IOUT≤1A, 3.5V≤VIN≤13.2V
2.45
2.5
2.55
V
Line Regulation
VRLINE
IOUT=10mA, 3.5V≤VIN≤13.2V
5.0
25
mV
Load Regulation
VRLOAD
VIN=3.5V, 10mA≤IOUT≤1A
7.5
37.5
mV
50
250
µV/oC
IOUT=100mA
70
200
mV
IOUT=1A
280
550
mV
IOUT=750mA
12
25
mA
IOUT=1A
18
mA
2.2
A
Output Voltage
Temperature Coefficient
∆VOUT/∆T
IOUT=10mA
Dropout Voltage (Note 2)
VDROP
∆VOUT=1%
Ground Current
IGND
Short Circuit Current
Minimum Load Current
ISC
VIN=3.5V
VOUT=0V (Note 3)
1.5
ILOAD (MIN)
Output Noise Voltage (rms)
1
10Hz to 100KHz, IOUT=100mA,
COUT=10µF
400
5
mA
µV
Note 2: 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 VOUT+1V applied to VIN.
Note 3: VIN=VOUT(NOMINAL)+1V.
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Electrical Characteristics (Continued)
AZ2940-3.3 Electrical Characteristics
Operating Conditions: VIN=4.3V, IOUT=10mA, CIN=10µF, COUT=10µF, TJ=25oC, unless otherwise specified.
The Boldface applies over -40oC≤TJ≤125oC.
Parameter
Symbol
Output Voltage
VOUT
Condition
Min
Typ
Max
Unit
IOUT=10mA
3.27
3.3
3.33
V
10mA≤IOUT≤1A, 4.3V≤VIN≤13.2V
3.23
3.3
3.37
V
Line Regulation
VRLINE
IOUT=10mA, 4.3V≤VIN≤13.2V
6.6
33
mV
Load Regulation
VRLOAD
VIN=4.3V, 10mA≤IOUT≤1A
9.9
50
mV
66
330
µV/oC
IOUT=100mA
70
200
mV
IOUT=1A
280
550
mV
IOUT=750mA
12
25
mA
IOUT=1A
18
mA
2.2
A
Output Voltage
Temperature Coefficient
∆VOUT/∆T
IOUT=10mA
Dropout Voltage (Note 2)
VDROP
∆VOUT=1%
Ground Current
IGND
Short Circuit Current
Minimum Load Current
ISC
VIN=4.3V
VOUT=0V (Note 3)
1.5
ILOAD (MIN)
Output Noise Voltage (rms)
1
10Hz to 100KHz, IOUT=100mA,
COUT=10µF
400
5
mA
µV
Note 2: 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 VOUT+1V applied to VIN.
Note 3: VIN=VOUT(NOMINAL)+1V.
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
7
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Electrical Characteristics (Continued)
AZ2940-5.0 Electrical Characteristics
Operating Conditions: VIN=6V, IOUT=10mA, CIN=10µF, COUT=10µF, TJ=25oC, unless otherwise specified. The
Boldface applies over -40oC≤TJ≤125oC.
Parameter
Symbol
Output Voltage
VOUT
Condition
Min
Typ
Max
Unit
IOUT=10mA
4.95
5.0
5.05
V
10mA≤IOUT≤1A, 6V≤VIN≤13.2V
4.90
5.0
5.10
V
Line Regulation
VRLINE
IOUT=10mA, 6V≤VIN≤13.2V
10
50
mV
Load Regulation
VRLOAD
VIN=6V, 10mA≤IOUT≤1A
15
75
mV
IOUT=10mA
100
500
µV/oC
IOUT=100mA
70
200
mV
IOUT=1A
280
550
mV
IOUT=750mA
12
25
mA
IOUT=1A
18
mA
2.2
A
Output Voltage
Temperature Coefficient
∆VOUT/∆T
Dropout Voltage (Note 2)
VDROP
Ground Current
IGND
Short Circuit Current
Minimum Load Current
ISC
∆VOUT=1%
VIN=6V
VOUT=0V (Note 3)
1.5
ILOAD (MIN)
Output Noise Voltage (rms)
1
10Hz to 100KHz, IOUT=100mA,
COUT=10µF
400
5
mA
µV
Note 2: 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 VOUT+1V applied to VIN.
Note 3: VIN=VOUT(NOMINAL)+1V.
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
8
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Typical Performance Characteristics
5.020
5.0250
5.018
5.0225
5.016
5.0200
5.014
5.0175
Output Voltage (V)
Output Voltage (V)
AZ2940-5.0
5.012
5.010
AZ2940-5.0
5.008
5.006
5.004
IOUT=10mA
5.002
TJ=25 C
5.0150
5.0125
5.0100
5.0075
5.0050
VIN=6V
5.0025
TJ=25 C
o
o
5.0000
5.000
6
7
8
9
10
11
12
13
0
14
250
Input Voltage (V)
Figure 4. Line Regulation
750
1000
Figure 5. Load Regulation
20
25.0
22.5
18
VIN=6V
Ground Current (mA)
TJ=25 C
17.5
15.0
12.5
10.0
AZ2940-5.0
7.5
o
TJ=25 C
16
o
20.0
Ground Current (mA)
500
Output Current (mA)
14
12
IOUT=100mA
10
IOUT=1A
8
6
5.0
4
2.5
2
0
0.0
0
250
500
750
0
1000
2
4
6
8
10
12
14
16
Input Voltage (V)
Output Current (mA)
Figure 7. Ground Current vs. Input Voltage
Figure 6. Ground Current vs. Output Current
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
500
0.37
450
0.36
400
0.35
Ground Current (mA)
Dropout Voltage (mV)
Typical Performance Characteristics (Continued)
350
300
AZ2940-5.0
250
200
150
IOUT=10mA
0.34
0.33
AZ2940-5.0
0.32
0.31
0.30
0.29
o
100
VIN=6V
TJ=25 C
0.28
50
0.27
0
0
250
500
750
-25
1000
0
25
50
75
100
125
o
Junction Temperature ( C)
Output Current (mA)
Figure 9. Ground Current vs. Junction Temperature
Figure 8. Dropout Voltage vs. Output Current
10.0
3.50
9.5
3.25
VIN=6V
Ground Current (mA)
Ground Current (mA)
3.00
VIN=6V
9.0
IOUT=500mA
2.75
AZ2940-5.0
2.50
2.25
IOUT=1A
8.5
8.0
AZ2940-5.0
7.5
7.0
6.5
2.00
6.0
1.75
5.5
5.0
1.50
-25
0
25
50
75
100
-25
125
0
25
50
75
100
125
o
o
Junction Temperature ( C)
Junction Temperature ( C)
Figure 11. Ground Current vs. Junction Temperature
Figure 10. Ground Current vs. Junction Temperature
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
500
500
475
475
450
450
425
425
Dropout Voltage (mV)
Dropout Voltage (mV)
Typical Performance Characteristics (Continued)
400
375
350
325
AZ2940-5.0
300
400
375
350
AZ2940-5.0
325
300
275
275
250
IOUT=1A
250
IOUT=750mA
225
225
200
200
-25
0
25
50
75
100
125
-25
0
o
25
50
75
Junction Temperature ( C)
125
Junction Temperature ( C)
Figure 13. Dropout Voltage vs. Junction Temperature
Figure 12. Dropout Voltage vs. Junction Temperature
100
5.05
COUT=2.2µF
Output Capacitor ESR (Ω)
5.04
5.03
AZ2940-5.0
Output Voltage (V)
100
o
5.02
5.01
5.00
4.99
4.98
VIN=6V
4.97
VOUT=5V
10
O
TA=25 C
Stable Range
1
0.1
IOUT=10mA
4.96
Unstable Range
4.95
-25
0
25
50
75
100
0.01
125
0
o
Junction Temperature ( C)
20
40
60
80
100
Output Current (mA)
Figure 14. Output Voltage vs. Junction Temperature
Figure 15. Output Capacitor ESR vs. Output Current
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Typical Performance Characteristics (Continued)
0.4
∆VOUT (0.2V/Div)
100
COUT=10µF
O
TA=25 C
0
-0.2
Stable Range
1
IOUT (0.5A/Div)
Output Capacitor ESR (Ω)
VOUT=5V
10
0.1
Unstable Range
0.01
0
200
400
600
800
1
0.5
0
-0.5
1000
Output Current (mA)
Time (200µs/Div)
Figure 17. Load Transient
Figure 16. Output Capacitor ESR vs. Output Current
0.06
∆VOUT (0.02V/Div)
AZ2940-5.0
COUT=47µF
0.2
0
-0.2
∆VIN (0.5V/Div)
∆VOUT (0.2V/Div)
0.4
IOUT (0.5A/Div)
AZ2940-5.0
COUT=10µF
0.2
1
0.5
0
AZ2940-5.0
IOUT=10mA
0.04
0.02
0
1
0.5
0
-0.5
-0.5
Time (200µs/Div)
Time (200µs/Div)
Figure 18. Load Transient
Figure 19. Line Transient
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
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Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Typical Performance Characteristics (Continued)
50
50
40
Power Dissipation (W)
Power Dissipation (W)
40
Package:TO-252-2 (1)
2
45*43mm Heatsink
No Heatsink
45
Package:TO-220-3
2
45*43mm Heatsink
No Heatsink
45
35
30
25
20
15
35
30
25
20
15
10
10
5
5
0
0
-25
0
25
50
75
100
-25
125
0
25
50
75
100
125
o
Case Temperature ( C)
o
Case Temperature ( C)
Figure 20. Power Dissipation vs. Case Temperature
Figure 21. Power Dissipation vs. Case Temperature
50
45
Package:TO-263-3
2
45*43mm Heatsink
No Heatsink
Power Dissipation (W)
40
35
30
25
20
15
10
5
0
-25
0
25
50
75
100
125
o
Case Temperature ( C)
Figure 22. Power Dissipation vs. Case Temperature
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
13
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Typical Application
1
VIN
VIN
V OUT
3
VOUT
AZ2940
+
+
CIN
GND
COUT
2
Figure 23. Typical Application of AZ2940
Note: CIN is required if regulator is located far from power supply filter and is recommended to be 0.47µF or greater. To maintain stability, COUT is recommended to be 2.2µF or greater. The ESR of this capacitor is critical, please see curve.
Mar. 2007 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
14
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Mechanical Dimensions
TO-220-3
2.580(0.102)
3.380(0.133)
0.550(0.022)
1.350(0.053)
1.160(0.046)
1.760(0.069)
14.230(0.560)
16.510(0.650)
φ1.500(0.059)
27.880(1.098)
30.280(1.192)
8.520(0.335)
9.520(0.375)
1.850(0.073)
9.660(0.380)
10.660(0.420)
φ3.560(0.140)
4.060(0.160)
Unit: mm(inch)
3°
0.200(0.008)
7°
3.560(0.140)
4.820(0.190)
2.080(0.082)
2.880(0.113)
7°
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)
Mar. 2007 Rev. 1. 6
0.356(0.014)
0.406(0.016)
BCD Semiconductor Manufacturing Limited
15
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Mechanical Dimensions (Continued)
TO-263-3
4.070(0.160)
4.820(0.190)
Unit: mm(inch)
3°
9.650(0.380)
10.290(0.405)
8.840(0.348)
7.420(0.292)
1.150(0.045)
1.390(0.055)
1.270(0.050)
1.390(0.055)
70°
14.760(0.581)
15.740(0.620)
1.150(0.045)
1.390(0.055)
3°
0.510(0.020)
0.990(0.039)
2.540(0.100)
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)
0.020(0.001)
0.250(0.010)
2.390(0.094)
2.690(0.106)
8.640(0.340)
9.650(0.380)
7°
7.980(0.314)
2°
8°
0.380(0.015)
2.540(0.100)
2.540(0.100)
0°
6°
Mar. 2007 Rev. 1. 6
2.540(0.100)
BCD Semiconductor Manufacturing Limited
16
Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
AZ2940
Mechanical Dimensions (Continued)
1.350(0.053)
1.650(0.065)
TO-252-2(1)
6.350(0.250)
6.650(0.262)
5.200(0.205)
5.400(0.213)
Unit: mm(inch)
2.200(0.087)
2.400(0.094)
0.430(0.017)
0.580(0.023)
4.300(0.169)
5.400(0.212)
5°
0.700(0.028)
0.900(0.035)
0.500(0.020)
0.700(0.028)
2.300TYP
4.500(0.177)
4.700(0.165)
1.400(0.055)
1.780(0.070)
5°
3°
4°
0.430(0.017)
0.580(0.023)
Mar. 2007 Rev. 1. 6
4.800(0.189)
6.500(0.256)
3.800REF(0.150REF)
5.400(0.213)
5.700(0.224)
0.000(0.000)
0.127(0.005)
2.550(0.100)
2.900(0.114)
0.600(0.024)
0.900(0.035)
9.500(0.374)
9.900(0.390)
8°
BCD Semiconductor Manufacturing Limited
17
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Advanced Analog Circuits (Shanghai) Corporation
8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China
Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
REGIONAL SALES OFFICE
Shenzhen Office
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office
Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office
Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China
Tel: +86-755-8826 7951
Fax: +86-755-8826 7865
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
30920 Huntwood Ave. Hayward,
CA 94544, U.S.A
Tel : +1-510-324-2988
Fax: +1-510-324-2788
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