BCD AZ431AR-BTRG1 Adjustable precision shunt regulator Datasheet

Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
General Description
Features
The AZ431-B is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics,
low temperature coefficient and low output impedance,
which make it ideal substitute for Zener diode in applications such as switching power supply, charger and
other adjustable regulators.
·
The output voltage of AZ431-B can be set to any value
between VREF (2.5V) and the corresponding maximum
cathode voltage.
The AZ431-B precision reference is offered in two
voltage tolerance: 0.4% and 0.8%.
·
·
·
Programmable Precise Output Voltage from 2.5V
to 18V
High Stability under Capacitive Load
Low Temperature Deviation: 4.5mV Typical
Low Equivalent Full-range Temperature Coefficient with 20PPM/oC Typical
Sink Current Capacity from 1mA to 100mA
Low Output Noise
Wide Operating Range of -40 to 125oC
Applications
·
·
·
·
·
This IC is available in 4 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5 and SOT-89.
SOT-89
·
·
·
AZ431-B
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
TO-92(Ammo Packing)
TO-92(Bulk Packing)
SOT-23-5
SOT-23
Figure 1. Package Types of AZ431-B
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
1
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Pin Configuration
K Package
(SOT-23-5)
R Package
(SOT-89)
N Package
(SOT-23)
ANODE
3
1
2
REF
CATHODE
1
2
3
NC
1
*
2
CATHODE
3
5
ANODE
4
REF
(Note 1)
REF ANODE CATHODE
Note 1: * Pin 2 is attached to substrate and
must be connected to ANODE or open
Z Package
(TO-92(Ammo Packing))
Z Package
(TO-92(Bulk Packing))
3
CATHODE
3 CATHODE
2
ANODE
2
ANODE
1
REF
1
REF
Figure 2. Pin Configuration of AZ431-B (Top View)
Functional Block Diagram
CATHODE
+
REF
-
VREF
ANODE
Figure 3. Functional Block Diagram of AZ431-B
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
2
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Ordering Information
AZ431
Circuit Type
E1: Lead Free
G1: Green
Voltage Tolerance
A: 0.4%
B: 0.8%
TR: Tape and Reel or Ammo
Blank: Bulk
Package
N: SOT-23
R: SOT-89
B: AZ431-B (20V)
Package
Temperature Range
SOT-23
-40 to 125oC
SOT-23-5
-40 to 125oC
TO-92
SOT-89
-
-40 to 125oC
-40 to 125oC
K: SOT-23-5
Z: TO-92
Part Number
Marking ID
Packing
Type
Voltage
Tolerance
Lead Free
Green
0.4%
AZ431AN-BTRE1
AZ431AN-BTRG1
EA4
GA4
Tape & Reel
0.8%
AZ431BN-BTRE1
AZ431BN-BTRG1
EA5
GA5
Tape & Reel
0.4%
AZ431AK-BTRE1
AZ431AK-BTRG1
E4A
G4A
Tape & Reel
0.8%
AZ431BK-BTRE1
AZ431BK-BTRG1
E4B
G4B
Tape & Reel
0.4%
AZ431AZ-BE1
AZ431AZ-BG1
AZ431AZ-BE1
AZ431AZ-BG1
Bulk
0.4%
AZ431AZ-BTRE1
AZ431AZ-BTRG1
AZ431AZ-BE1
AZ431AZ-BG1
Ammo
0.8%
AZ431BZ-BE1
AZ431BZ-BG1
AZ431BZ-BE1
AZ431BZ-BG1
Bulk
0.8%
AZ431BZ-BTRE1
AZ431BZ-BTRG1
AZ431BZ-BE1
AZ431BZ-BG1
Ammo
0.4%
AZ431AR-BTRE1
AZ431AR-BTRG1
E43C
G43C
Tape & Reel
0.8%
AZ431BR-BTRE1
AZ431BR-BTRG1
E43D
G43D
Tape & Reel
Lead Free
Green
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. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Absolute Maximum Ratings (Note 2)
Parameter
Symbol
Value
Unit
Cathode Voltage
VKA
20
V
Cathode Current Range (Continuous)
IKA
-100 to 150
mA
Reference Input Current Range
IREF
10
mA
PD
Power Dissipation
Z, R Package: 770
mW
N, K Package: 370
TJ
150
Storage Temperature Range
TSTG
-65 to 150
ESD (Human Body Model)
ESD
2000
Junction Temperature
oC
o
C
V
Note 2: 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
Cathode Voltage
VKA
VREF
18
V
Cathode Current
IKA
1.0
100
mA
Operating Ambient
Temperature Range
TA
-40
125
o
Dec. 2012 Rev. 3.3
C
BCD Semiconductor Manufacturing Limited
4
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Electrical Characteristics
Operating Conditions: TA=25oC, unless otherwise specified.
Parameter
Reference Voltage
0.4%
0.8%
Deviation of Reference Voltage
Over Full Temperature Range
Test
Circuit
Symbol
4
VREF
4
ΔVREF
Conditions
Min
Typ
Max
2.490
2.500
2.510
2.480
2.500
2.520
0 to 70oC
4.5
8
-40 to 85oC
4.5
10
-40 to 125oC
4.5
16
ΔVKA=
10V to VREF
-1.0
-2.7
ΔVKA=
18V to 10V
-0.5
-2.0
0.7
4
μA
0.4
1.2
μA
VKA=VREF, IKA=10mA
VKA=VREF
IKA= 10mA
Unit
V
mV
Ratio of Change in Reference
Voltage to the Change in
Cathode Voltage
5
Reference Current
5
IREF
Deviation of Reference Current
Over Full Temperature Range
5
ΔIREF
Minimum Cathode Current for
Regulation
4
IKA
(Min)
VKA=VREF
0.4
1.0
mA
Off-state Cathode Current
6
IKA
(Off)
VKA=18V, VREF=0
0.05
1.0
μA
Dynamic Impedance
4
ZKA
VKA=VREF, IKA=1 to 100mA
f ≤ 1.0KHz
0.2
0.5
Ω
Thermal Resistance
ΔVREF
ΔVKA
θJC
IKA=10mA
IKA=10mA, R1=10KΩ, R2=∞
IKA=10mA, R1=10KΩ, R2=∞
TA=-40 to 125oC
SOT-23
177.65
SOT-23-5
177.65
TO-92
107.04
SOT-89
30.30
Dec. 2012 Rev. 3.3
mV/
V
o
C/W
BCD Semiconductor Manufacturing Limited
5
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Electrical Characteristics (Continued)
R1
VKA
VIN
IKA
VREF
Figure 4. Test Circuit 4 for VKA=VREF
R3
VIN
VKA
IKA
R1
IREF
VKA=VREF(1+R1/R2)+ IREF*R1
R2
VREF
Figure 5. Test Circuit 5 for VKA>VREF
VKA
VIN
IOFF
Figure 6. Test Circuit 6 for IOFF
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Performance Characteristics
1.5
2.510
VKA = VREF
Reference Current (μA)
Reference Voltage (V)
R1=10K,R2=Infinite
IKA = 10mA
2.505
2.500
2.495
IKA=10mA
1.0
0.5
2.490
2.485
-60
-40
-20
0
20
40
60
80
100
120
0.0
-60
140
-40
-20
0
o
60
80
100
120
140
Figure 8. Reference Current vs. Ambient Temperature
800
VKA=VREF
VKA=VREF
0
TA=25 C
0
TA=25 C
600
100
Cathode Current (μA)
Cathode Current (mA)
40
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Ambient Temperature
150
20
0
Ambient Temperature ( C)
50
0
400
200
0
-50
-200
-100
-2
-1
0
1
2
-1.0
3
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
Cathode Voltage (V)
Cathode Voltage (V)
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Cathode Current vs. Cathode Voltage
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
7
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Performance Characteristics (Continued)
1.8
VKA=18V
1.6
VREF=0
-0.9
ΔVREF / ΔVKA (mV/V)
Off-State Cathode Current (μA)
2.0
1.4
1.2
1.0
0.8
0.6
0.4
VKA=3.5V to 18V
-1.0
-1.1
-1.2
-1.3
0.2
-1.4
0.0
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
120
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 11. Off-State Cathode Current vs.
Ambient Temperature
Figure 12. Ratio of Delta Reference Voltage to the
Ratio of Delta Cathode Voltage
Output
70
0
TA=25 C
60
15K
IKA=10mA
50
Voltage Gain (dB)
100
o
o
I KA
242
10μF
40
30
20
8.2K
10
0
-10
1k
10k
100k
GND
1M
Small Signal Frequency (Hz)
Figure 13. Small Signal Voltage Gain vs. Frequency
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
8
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Performance Characteristics (Continued)
Output
IKA=10mA
1K
Reference Impedance (Ω)
o
10
TA=25 C
IKA
50
1
GND
0.1
1K
10K
100K
1,000K
Frequency (Hz)
Figure 14. Reference Impedance vs. Frequency
Cathode Current (mA)
20
18
VKA=10V:No oscillation
16
VKA=15V:No oscillation
R1 (10K)
14
12
150
IKA
Stable
Stable
10
8
6
4
R2
VKA=VREF
VKA=5V
2
0
0.01
0.1
1
10
Load Capacitance (μF)
Figure 15. Stability Boundary Conditions vs. Load Capacitance
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
9
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Performance Characteristics (Continued)
5
Input and Output Voltage (V)
Input
Output
4
220
Pulse
Generator
f=100KHz
3
Output
2
50
1
0
GND
0
2
4
6
Time (μS)
Figure 16. Pulse Response of Input and Output Voltage
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
10
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Application
R3
V OUT
VIN
R1
VOUT=(1+R1/R2)*VREF
V REF
AZ431-B
R2
Figure 17. Shunt Regulator
VIN
R1
VOUT
R4
VOUT=(1+R2/R3)*VREF
R2
VREF
AZ431-B
R3
Figure 18. High Current Shunt Regulator
R2
V IN
I OUT
IOUT=VREF/R2 + IKA
R1
AZ431-B
Figure 19. Current Source or Current Limit
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
11
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Application (Continued)
VIN
VOUT
AZ1117
R1
8.2K
Adjust
R2
250
5V, 1A
AZ431-B
R3
250
Figure 20. Precision 5V 1A Regulator
R3
C1
R4
VOUT
R2 680
R5
R1
U2
Q1
3
COMP
C2
2
AZ431-B
PWM Controller
VFB
4
PS521
Figure 21. PWM Converter with Reference
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
12
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions
TO-92(Bulk Packing)
Unit: mm(inch)
1.000(0. 039)
3.430(0. 135)
MIN
3.700(0.146)
3.300(0.130)
1.400(0. 055)
0.320(0. 013)
0.510(0. 020)
0. 000(0. 000)
0. 380(0. 015)
Φ1. 600(0. 063)
MAX
4.700(0.185)
1.270(0. 050)
TYP
15.500(0.610)
0.360(0. 014)
0.760(0. 030)
12.500(0.492)
4.300(0.169)
4.400(0. 173)
4.800(0. 189)
2.420(0.095)
2.660(0.105)
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
13
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
TO-92(Ammo Packing)
Unit: mm(inch)
1. 100(0. 043)
3. 430(0.135)
MIN
1.270(0.050)
Typ
2.500(0.098)
4.000 (0.157 )
0. 000(0.000)
0. 380(0.015)
Φ1. 600(0. 063)
MAX
14.500(0.571)
12.500(0.492)
0.320(0. 013)
0. 510(0. 020)
3.800(0.150)
3.300(0.130)
1. 400(0.055)
4.700(0.185)
4.300(0.169)
4.400(0.173)
4.800 (0.189 )
13.000(0. 512)
15.000 (0.591 )
0.380(0.015)
0.550(0.022 )
2.540(0.100)
Typ
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
14
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
SOT-23
3.0 °
2.0°
1.050(0.041)REF
7.0°
R0.100(0.004)
0.900(0.035)
1.100(0.043)
0.0°~10.0°
0.020(0.001)
0.100(0.004) 0.200(0.008)MIN
2.800(0.110)
3.000(0.118)
0.550(0.022)REF
7.0°
0.080(0.003)
0.150(0.006)
1.200(0.047)
1.400(0.055)
2.300(0.091)
2.500(0.098)
0.920(0.036)
0.980(0.039)
0.100(0.004) GAUGE PLANE
4×R0.100(0.004)
0.500(0.020)
0.700(0.028)
Unit: mm(inch)
0.300(0.012)
0.500(0.020)
1.900(0.075)REF
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
15
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
SOT-23-5
Unit: mm(inch)
0.300(0.012)
0.600(0.024)
1.500(0.059)
1.700(0.067)
0.100(0.004)
0.200(0.008)
2.950(0.116)
2.650(0.104)
2.820(0.111)
3.020(0.119)
0.200(0.008)
0.700(0.028)
REF
0.300(0.012)
0.400(0.016)
0°
8°
1.800(0.071)
2.000(0.079)
0.000(0.000)
MAX
1.450(0.057)
0.950(0.037)
TYP
0.150(0.006)
0.900(0.035)
1.300(0.051)
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
16
Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
SOT-89
1.550(0.061)REF
Unit: mm(inch)
4.400(0.173)
4.600(0.181)
1.400(0.055)
1.600(0.063)
1.030(0.041)REF
45
2.300(0.091)
2.600(0.102)
3.950(0.156)
4.250(0.167)
2.060(0.081)REF
3
0.900(0.035)
1.100(0.043)
0.320(0.013)
0.520(0.020)
0.480(0.019)
0.320(0.013)
0.520(0.020)
10
0.350(0.014)
0.450(0.018)
3.000(0.118)
TYP
1.500(0.059)
1.800(0.071)
0.320(0.013)REF
3
2.210(0.087)REF
1.620(0.064)REF
R0.150(0.006)
10
Dec. 2012 Rev. 3.3
BCD Semiconductor Manufacturing Limited
17
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