AZ432BK [BCDSEMI]
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR; 低电压（ 1.25V ）可调式精密并联稳压器
| 型号： | AZ432BK |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR |
| 文件： | 总16页 (文件大小：162K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
General Description
Features
The AZ432 series ICs are low voltage three-terminal
adjustable regulators with guaranteed thermal stability
over a full operation range. These ICs feature sharp
turn-on characteristics, low temperature coefficient
and low output impedance, which make them ideal
substitutes for Zener diodes in applications such as
switching power supply, charger, motherboard and
other adjustable regulators.
·
Wide Programmable Precise Output Voltage from
1.25V to 18V
High Stability under Capacitive Load
Low Temperature Deviation: 3mV Typical
Low Equivalent Full-Range Temperature Coeffi-
·
·
·
o
cient: 20PPM/ C Typical
·
·
Low Dynamic Output Resistance: 0.05Ω Typical
High Sink Current Capacity from 55µA to 100
mA
The output voltage can be set to any value between
1.25V and 18V with two external resistors.
·
·
Low Output Noise
o
Wide Operating Range of -40 to 125 C
The AZ432 precision reference is offered in two band-
gap tolerance: 0.5% and 1%.
Applications
These ICs are available in 4 packages: TO-92, SOT-
23-3, SOT-23-5, SOT-89.
·
·
·
·
·
Graphic Card
PC Motherboard
Voltage Adapter
Switching Power Supply
Charger
SOT-23-3
TO-92
SOT-23-5
SOT-89
Figure 1. Package Types of AZ432
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
1
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Pin Configuration
N Package
(SOT-23-3)
K Package
(SOT-23-5)
R Package
(SOT-89)
Z Package
(TO-92)
ANODE
3
NC
NC
1
2
3
5
4
ANODE
REF
3
2
1
CATHODE
ANODE
REF
2
3
1
1
2
CATHODE
REF ANODE CATHODE
REF
CATHODE
Figure 2. Pin Configuration of AZ432 (Top View)
Functional Block Diagram
CATHODE
+
-
REF
VREF
ANODE
Figure 3. Functional Block Diagram of AZ432
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Ordering Information
AZ432
-
E1: Lead Free
Blank: Tin Lead
Circuit Type
TR: Tape and Reel or Ammo
Blank: Tube or Bulk
Package
Z: TO-92
N: SOT-23-3
K: SOT-23-5
R: SOT-89
Bandage Tolerance
A: 0.5%
B: 1%
Part Number
Marking ID
Tin Lead Lead Free
AZ432AZ
Tempera-
ture Range Tolerance
Voltage
Packing
Type
Package
Tin Lead
AZ432AZ
Lead Free
AZ432AZ-E1
0.50%
0.50%
AZ432AZ-E1
AZ432AZ-E1
AZ432BZ-E1
AZ432BZ-E1
EA8
Bulk
AZ432AZTR
AZ432BZ
AZ432AZTR-E1
AZ432BZ-E1
AZ432AZ
AZ432BZ
AZ432BZ
N48
Ammo
-40 to 125oC
1%
TO-92
Bulk
1%
AZ432BZTR
AZ432ANTR
AZ432BNTR
AZ432AKTR
AZ432BKTR
AZ432ARTR
AZ432BRTR
AZ432BZTR-E1
AZ432ANTR-E1
AZ432BNTR-E1
AZ432AKTR-E1
AZ432BKTR-E1
AZ432ARTR-E1
AZ432BRTR-E1
Ammo
0.50%
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
-40 to 125oC
1%
SOT-23-3
SOT-23-5
SOT-89
N49
EA9
0.50%
K43
E7A
-40 to 125oC
1%
K44
E8A
0.50%
R42A
E42A
-40 to 125oC
1%
R42B
E42B
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
20
Unit
V
VKA
Cathode Voltage
IKA
Cathode Current Range (Continuous)
Reference Input Current Range
-100 to 100
10
mA
mA
IREF
Z,R Package
N,K Package
-65 to 150
770
370
PD
Power Dissipation
mW
oC
TSTG
Storage Temperature Range
TO-92
130
330
250
100
SOT-23-3
SOT-23-5
SOT-89
oC/W
QJA
Package Thermal Impedance
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 Operation Ratings
Parameter
Symbol
Min
Max
18
Unit
V
VKA
VREF
Cathode Voltage
IKA
Cathode Current
0.1
-40
100
125
mA
oC
Operating Ambient Temperature Range
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Electrical Characteristics
o
(Typical and limits apply for T =25 C unless otherwise noted.)
J
Test
Circuit
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
0.5%
1%
1.244 1.250 1.256
1.238 1.250 1.262
VREF VKA=VREF, IKA=10mA
Reference Voltage
4
V
0 to 70oC
-40 to 85oC
2
3
10
10
VKA=VREF
IKA=10mA
Deviation of Reference Volt-
age Over-Temperature
4
∆VREF
mV
∆VREF IKA=10mA,
∆VKA ∆VKA: VREF to 16V
Ratio of Change in VREF to the
Change in Cathode Voltage
5
5
-0.5
-1.5
0.4
mV/V
IREF
IKA=10mA, R1=10KΩ, R2=∞
Reference Input Current
0.15
µ A
Deviation of Reference Cur-
rent Over Full Temperature
Range
IKA=10mA, R1=10KΩ, R2=∞
TA=-40 to 85oC
∆IREF
5
0.1
55
0.4
80
µ A
IKA
Minimum Cathode Current for
Regulation
VKA=VREF
4
6
4
µ A
µ A
Ω
(MIN)
VREF=0, VKA=18V
VKA=6V, VREF=0
0.04
0.01
0.10
0.05
IKA
Off-State Cathode
Current
(OFF)
VKA=VREF, IKA=1 to 100mA
ZKA
Dynamic Impedance
0.05
0.15
f≤1.0kHz
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
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
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Performance Characteristics
1.253
0.18
R2=∞
KA=10mA
R1=10KΩ
1.252
I
VKA=VREF
IKA=10mA
0.17
1.251
0.16
1.250
0.15
1.249
0.14
1.248
0.13
1.247
-50
0.12
-50
-25
0
25
50
75
100
125
150
-25
0
25
50
75
100
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 8. Reference Current vs. Ambient Temperature
Figure 7. Reference Voltage vs. Ambient Temperature
150
400
VKA=VREF
TA=25oC
VKA=VREF
TA=25oC
300
100
200
50
0
100
0
-100
-200
-300
-50
-100
-150
-1
0
1
-1.0
-0.5
0.0
0.5
1.0
1.5
Cathode Voltage (V)
Cathode Voltage (V)
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Current vs. cathode Voltage
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Performance Characteristics (Continued)
Output
360
I KA
6.8K
60
50
40
30
20
10
0
IKA=10mA
TA=25oC
10µF
4.3K
GND
500K
100
1k
10k
100k
Small Signal Frequency (HZ)
Figure 11. Small Signal Voltage Gain vs. Frequency
10
Output
100Ω
1
IKA
50Ω
0.1
0.01
GND
1k
10k
100k
1M
Frequency (Hz)
Figure 12. Dynamic Impedance vs. Frequency
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Performance Characteristics (Continued)
3
Input
Output
2
R1
1.8KΩ
Pulse
Generator
f=100KHz
R2
50Ω
1
Output
GND
0
-1
0
1
2
3
4
5
6
Time (µS)
Figure 13. Pulse Response of Input and Output Voltage
-0.3
IKA=10mA
∆VKA=VREF to 16V.
-0.4
-0.5
-40
0
40
80
120
Ambient Temperature (oC)
Figure 14. Ratio of Delta Reference Voltage to the Ratio of Delta
Cathode Voltage vs. Ambient Temperature
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical ApplicationS
R3
VOUT
VIN
R1
VO=(1+R1/R2) VREF
VREF
R2
AZ432
Figure 15: Shunt Regulator
VIN
VOUT
R1
R4
R2
VO=(1+R2/R3) VREF
VREF
AZ432
R3
Figure 16: High Current Shunt Regulator
R2
VIN
IOUT
R1
IOUT = VREF/R2 + IKA
AZ432
Figure17: Current Source or Current Limit
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Application (Continued)
V
AZ1117
2.5V/1A
IN
R1
8.2K
R2
250
AZ432
R3
250
Figure18: Precision 2.5V/1A Regulator
R3
R4
C1
R1
VOUT
R2 680
R5
C2
U2
Q1
3
4
COMP
2
AZ432
PWM Controller
VFB
PS521
Figure 19: PWM Converter with Reference
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Mechanical Dimensions
TO-92
Unit: mm (inch)
1.100(0.043)
3.430(0.135)
MIN
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
4.400(0.173)
4.700(0.185)
0.380(0.015)
0.550(0.022)
1.270(0.050)
TYP
2.440(0.096)
2.640(0.104)
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Mechanical Dimensions (Continued)
SOT-23-3
Unit: mm(inch)
0.100(0.004) GAUGE PLANE
7.0°
4×R0.100(0.004)
3.0 °
0.500(0.020)
0.700(0.028)
R0.100(0.004)
0.900(0.035)
1.100(0.043)
7.0°
~
0.0° 10.0°
2.0°
0.020(0.001)
0.100(0.004)
1.050(0.041)REF
0.080(0.003)
0.150(0.006)
0.200(0.008)MIN
0.550(0.022)REF
2.800(0.110)
3.000(0.118)
1.200(0.047)
1.400(0.055)
2.300(0.091)
2.500(0.098)
0.390(0.015)
0.450(0.018)
0.920(0.036)
0.980(0.039)
1.900(0.075)REF
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Mechanical Dimensions (Continued)
SOT-23-5
Unit: mm(inch)
2.800(0.110)
3.000(0.118)
0.080(0.003)
0.220(0.009)
0.200(0.008)
0.300(0.012)
4°
4°
R0.100(0.004)
R0.200(0.008)
R0.100(0.004)
0.925(0.036)
0.975(0.038)
0.300(0.012)
0.500(0.020)
5°
15°
0.010(0.0004)
0.150(0.006)
0.650(0.026)
1.050(0.041)
5°
15°
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Mechanical Dimensions (Continued)
SOT-89
Unit: mm(inch)
4.400(0.173)
1.400(0.055)
1.600(0.063)
4.600(0.181)
1.630(0.064)
1.830(0.072)
0.000(0.000)
0.076(0.003)
1.400(0.055)*
R0.200(0.008)
2.300(0.091)
2.600(0.102)
3°
0.360(0.014)
0.480(0.019)
0.440(0.017)
0.360(0.014)
0.440(0.017)
0.360(0.014)
0.480(0.019)
0.560(0.022)
3.000(0.118)
R0.150(0.006)
BCD Semiconductor Manufacturing Limited
Apr. 2005 Rev. 1. 2
15
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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
Tel: +86-21-6485-1491, Fax: +86-21-5450-0008
Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
800 Yi Shan Road, Shanghai 200233, PRC
Advanced Analog Circuits (Shanghai) Corporation
8F, B Zone, 900 Yi Shan Road, Shanghai 200233, PRC
BCD Semiconductor (Taiwan) Company Limited
Room 2210, 22nd Fl, 333, Keelung Road, Sec. 1, TaiPei (110), Taiwan
Tel: +886-2-2758 6828, Fax: +886-2-2758 6892
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any pro-
ducts 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 Limi-
ted does not convey any license under its patent rights or other rights nor the rights of others.
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