BCD AZ431AZ-BTRE1 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.
·
·
·
·
·
·
AZ431-B
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
The AZ431-B precision reference is offered in two
voltage tolerance: 0.4% and 0.8%.
This IC is available in 5 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5, SOT-89-3 and
SOIC-8.
·
·
·
·
·
SOIC-8
SOT-89-3
SOT-23
SOT-23-5
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
TO-92
TO-92 Ammo Packing
Figure 1. Package Types of AZ431-B
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Pin Configuration
R Package
(SOT-89-3)
N Package
(SOT-23)
M Package
(SOIC-8)
ANODE
CATHODE
1
8
REF
ANODE
2
7
ANODE
ANODE
3
6
ANODE
NC
4
5
NC
3
REF
CATHODE
REF
3
CATHODE
3
CATHODE
2
ANODE
2
ANODE
1
REF
1
REF
3
ANODE CATHODE
K Package
(SOT-23-5)
Z Package
(TO-92 Ammo Packing)
Z Package
(TO-92)
2
1
2
1
NC
1
NC
2
CATHODE
3
5
ANODE
4
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
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Ordering Information
AZ431
E1: Lead Free
Circuit Type
Blank: Tin Lead
Voltage Tolerance
A: 0.4%
B: 0.8%
TR: Tape and Reel or Ammo
Package
B: AZ431-B (20V)
Blank: Tube or Bulk
M: SOIC-8
Z: TO-92
N: SOT-23
K: SOT-23-5
R: SOT-89-3
Package
Temperature Range
SOT-23
-40 to 125oC
SOT-23-5
-40 to 125oC
TO-92
SOIC-8
SOT-89-3
-40 to 125oC
-40 to 125oC
-40 to 125oC
Voltage
Tolerance
Part Number
Tin Lead
Lead Free
Marking ID
Tin Lead
Lead Free
Packing
Type
0.4%
AZ431AN-BTRE1
EA4
Tape & Reel
0.8%
AZ431BN-BTRE1
EA5
Tape & Reel
0.4%
AZ431AK-BTR
AZ431AK-BTRE1
K4A
E4A
Tape & Reel
0.8%
AZ431BK-BTR
AZ431BK-BTRE1
K4B
E4B
Tape & Reel
0.4%
AZ431AZ-B
AZ431AZ-BE1
AZ431AZ-B
AZ431AZ-BE1
Bulk
0.4%
AZ431AZ-BTR
AZ431AZ-BTRE1
AZ431AZ-B
AZ431AZ-BE1
Ammo
0.8%
AZ431BZ-B
AZ431BZ-BE1
AZ431BZ-B
AZ431BZ-BE1
Bulk
0.8%
AZ431BZ-BTR
AZ431BZ-BTRE1
AZ431BZ-B
AZ431BZ-BE1
Ammo
0.4%
AZ431AM-B
AZ431AM-BE1
AZ431AM-B
AZ431AM-BE1
Tube
0.4%
AZ431AM-BTR
AZ431AM-BTRE1
AZ431AM-B
AZ431AM-BE1
Tape & Reel
0.8%
AZ431BM-B
AZ431BM-BE1
AZ431BM-B
AZ431BM-BE1
Tube
0.8%
AZ431BM-BTR
AZ431BM-BTRE1
AZ431BM-B
AZ431BM-BE1
Tape & Reel
0.4%
AZ431AR-BTR
AZ431AR-BTRE1
431C
E43C
Tape & Reel
0.8%
AZ431BR-BTR
AZ431BR-BTRE1
431D
E43D
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Absolute Maximum Ratings (Note 1)
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
M, Z, R Package: 770
PD
Power Dissipation
mW
N, K Package: 370
TJ
150
oC
Storage Temperature Range
TSTG
-65 to 150
oC
ESD (Human Body Model)
ESD
2000
V
Junction Temperature
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
Cathode Voltage
VKA
VREF
18
V
Cathode Current
IKA
1.0
100
mA
Operating Ambient
Temperature Range
TA
-40
125
oC
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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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
∆VREF
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
∆VKA=
10V to VREF
-1.0
-2.7
∆VKA=
18V to 10V
-0.5
-2.0
0.7
4
µA
TA=-40 to 125oC
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
∆IREF
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
∆VREF
∆VKA
IKA=10mA
IKA=10mA, R1=10KΩ, R2=∞
IKA=10mA, R1=10KΩ, R2=∞
Mar. 2007 Rev. 2. 4
mV/
V
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
Mar. 2007 Rev. 2. 4
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
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Performance Characteristics (Continued)
1.8
VKA=18V
1.6
VREF=0
-0.9
∆VREF / ∆VKA (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
-40
120
-20
0
20
40
60
80
100
120
o
o
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
Voltage Gain (dB)
50
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
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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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 15. Reference Impedance vs. Frequency
Cathode Current (mA)
20
18
VKA=10V:No oscillation
16
VKA=15V:No oscillation
IKA
14
12
150
R1 (10K)
Stable
Stable
10
8
6
4
R2
VKA=VREF
VKA=5V
2
0
0.01
0.1
1
10
Load Capacitance (µF)
Figure 16. Stability Boundary Conditions vs. Load Capacitance
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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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
GND
0
0
2
4
6
Time (µS)
Figure 18. Pulse Response of Input and Output Voltage
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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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 19. Shunt Regulator
VIN
VOUT
R1
R4
VOUT=(1+R2/R3)*VREF
R2
VREF
AZ431-B
R3
Figure 20. High Current Shunt Regulator
R2
V IN
I OUT
IOUT=VREF/R2 + IKA
R1
AZ431-B
Figure 21. Current Source or Current Limit
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Typical Application (Continued)
VIN
AZ1117
R1
8.2K
VOUT
Adjust
5V, 1A
R2
250
AZ431-B
R3
250
Figure 22. 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 23. PWM Converter with Reference
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions
TO-92
Unit: mm(inch)
1.100(0.043)
3.430(0.135)
MIN
3.700(0.146)
3.300(0.130)
1.400(0.055)
0.360(0.014)
0.510(0.020)
0.000(0.000)
0.380(0.015)
Φ1.600(0.063)
MAX
4.700(0.185)
0.380(0.015)
0.550(0.022)
14.100(0.555)
14.500(0.571)
4.300(0.169)
4.400(0.173)
4.700(0.185)
1.270(0.050)
TYP
2.440(0.096)
2.640(0.104)
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
TO-92 Ammo Packing
12.400(0.488)
13.000(0.512)
Unit: mm(inch)
±1.000(0.039)
±1.000(0.039)
4.400(0.173)
4.600(0.181)
ΔP
Δh
3.400(0.134)
3.600(0.142)
4.400(0.173)
4.600(0.181)
19.000(0.748)
21.000(0.827)
0.380(0.015)
0.550(0.022)
2.200(0.087)
2.800(0.110)
1.000 (0.039) MAX
15.500(0.610)
16.500(0.650)
5.500(0.217)
6.500(0.256)
2.500(0.098)
MIN
3.800(0.150)
4.200(0.165)
17.500(0.689)
19.000(0.748)
2.200(0.087)
2.800(0.110)
6.050(0.238)
6.650(0.262)
8.500(0.335)
9.500(0.374)
3.550(0.140)
4.150(0.163)
12.500(0.492)
12.900(0.508)
0.150(0.006)
0.250(0.010)
0.350(0.014)
0.450(0.018)
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
SOT-23
Mar. 2007 Rev. 2. 4
Unit: mm(inch)
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)
1.250(0.049)
1.050(0.041)
0.950(0.037)
TYP
0.000(0.000)
0.100(0.004)
1.050(0.041)
1.150(0.045)
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
SOT-89-3
Unit: mm(inch)
4.400(0.173)
4.600(0.181)
1.630(0.064)
1.400(0.055)
1.600(0.063)
1.830(0.072)
0.000(0.000)
0.076(0.003)
1.400(0.055)*
1.200(0.047)
0.900(0.035)
3.950(0.156)
4.250(0.167)
R0.200(0.008)
2.300(0.091)
2.600(0.102)
3°
10°
0.360(0.014)
0.360(0.014)
0.360(0.014)
0.520(0.020)
0.480(0.019)
0.440(0.017)
0.440(0.017)
3.000(0.118)
0.560(0.022)
3°
10°
R0.150(0.006)
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
ADJUSTABLE PRECISION SHUNT REGULATORS
AZ431-B
Mechanical Dimensions (Continued)
SOIC-8
4.700(0.185)
5.100(0.201)
7°
Unit: mm(inch)
0.320(0.013)
1.350(0.053)
1.750(0.069)
8°
8°
7°
0.675(0.027)
0.725(0.029)
D
5.800(0.228)
1.270(0.050)
6.200(0.244)
TYP
D
20:1
φ 0.800(0.031)
0.300(0.012)
R0.150(0.006)
0.100(0.004)
0.200(0.008)
0°
8°
1.000(0.039)
3.800(0.150)
4.000(0.157)
0.330(0.013)
0.190(0.007)
0.250(0.010)
1°
5°
0.510(0.020)
0.900(0.035)
R0.150(0.006)
0.450(0.017)
0.800(0.031)
Mar. 2007 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
18
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