BCD AZ432AZTR-E1 Low voltage (1.25v) adjustable precision shunt regulator Datasheet

Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
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.
·
·
·
·
·
·
The output voltage can be set to any value between
1.25V and 18V with two external resistors.
·
·
The AZ432 precision reference is offered in two voltage tolerance: 0.5% and 1.0%.
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 Coefficient: 20PPM/oC Typical
Low Dynamic Output Resistance: 0.05Ω Typical
High Sink Current Capacity from 0.1mA to 100
mA
Low Output Noise
Wide Operating Range of -40 to 125oC
Applications
These ICs are available in 4 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5 and SOT-89.
TO-92(Bulk Packing)
AZ432
·
·
·
·
·
Graphic Card
PC Motherboard
Voltage Adapter
Switching Power Supply
Charger
TO-92(Ammo Packing)
SOT-89
SOT-23
SOT-23-5
Figure 1. Package Types of AZ432
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
1
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Pin Configuration
N Package
(SOT-23)
Z Package
(TO-92(Ammo Packing))
Z Package
(TO-92(Bulk Packing))
ANODE
3
CATHODE
3
CATHODE
2
ANODE
2
ANODE
1
REF
1
REF
3
1
REF
R Package
(SOT-89)
K Package
(SOT-23-5)
NC
1
*
2
CATHODE
3
(Note 1)
2
CATHODE
5
ANODE
4
REF
1
2
3
REF ANODE CATHODE
Note 1: * Pin 2 is attached to substrate and
must be connected to ANODE or open
Figure 2. Pin Configuration of AZ432 (Top View)
Functional Block Diagram
CATHODE
+
REF
-
VREF
ANODE
Figure 3. Functional Block Diagram of AZ432
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
2
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Ordering Information
AZ432
E1: Lead Free
Circuit Type
G1: Green
TR: Tape and Reel or Ammo
Blank: Bulk
Package
Bandage Tolerance
A: 0.5%
B: 1.0%
Package
TO-92
Temperature Range
-40 to 125oC
SOT-23
-40 to 125oC
SOT-23-5
-40 to 125oC
SOT-89
-40 to 125oC
Voltage
Tolerance
Z: TO-92
N: SOT-23
K: SOT-23-5
R: SOT-89
Part Number
Lead Free
Marking ID
Green
Lead Free
Green
Packing
Type
0.5%
AZ432AZ-E1
AZ432AZ-G1
AZ432AZ-E1
AZ432AZ-G1
Bulk
0.5%
AZ432AZTR-E1
AZ432AZTR-G1
AZ432AZ-E1
AZ432AZ-G1
Ammo
1.0%
AZ432BZ-E1
AZ432BZ-G1
AZ432BZ-E1
AZ432BZ-G1
Bulk
1.0%
AZ432BZTR-E1
AZ432BZTR-G1
AZ432BZ-E1
AZ432BZ-G1
Ammo
0.5%
AZ432ANTR-E1
AZ432ANTR-G1
EA8
GA8
Tape & Reel
1.0%
AZ432BNTR-E1
AZ432BNTR-G1
EA9
GA9
Tape & Reel
0.5%
AZ432AKTR-E1
AZ432AKTR-G1
E7A
G7A
Tape & Reel
1.0%
AZ432BKTR-E1
AZ432BKTR-G1
E8A
G8A
Tape & Reel
0.5%
AZ432ARTR-E1
AZ432ARTR-G1
E42A
G42A
Tape & Reel
1.0%
AZ432BRTR-E1
AZ432BRTR-G1
E42B
G42B
Tape & Reel
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. 2. 5
BCD Semiconductor Manufacturing Limited
3
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Absolute Maximum Ratings (Note 2)
Parameter
Symbol
Value
Unit
Cathode Voltage
VKA
20
V
Cathode Current Range (Continuous)
IKA
-100 to 100
mA
Reference Input Current Range
IREF
10
mA
PD
Power Dissipation
N, K Package
370
o
150
TSTG
Storage Temperature Range
770
mW
TJ
Junction Temperature
Z, R Package
C
oC
-65 to 150
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 Operation Ratings
Parameter
Symbol
Min
Max
Unit
Cathode Voltage
VKA
VREF
18
V
Cathode Current
IKA
0.1
100
mA
-40
125
Operating Ambient Temperature Range
Dec. 2012 Rev. 2. 5
o
C
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Electrical Characteristics
(Typical and limits apply for TA=25oC, unless otherwise noted.)
Parameter
Reference Voltage
0.5%
1.0%
Deviation of Reference Voltage
Over Full Temperature Range
Test
Circuit
Symbol
4
VREF
4
ΔVREF
Conditions
Min
5
ΔVREF
ΔVKA
Reference Input Current
5
IREF
Deviation of Reference Current
Over Full Temperature Range
5
ΔIREF
Minimum Cathode Current for
Regulation
4
IKA
(MIN)
Off-state Cathode
Current
6
IKA
(OFF)
Dynamic Impedance
4
ZKA
Thermal Resistance
(Junction to Case)
θJC
Max
Unit
1.244
1.250
1.256
1.238
1.250
1.262
2
10
-40 to 85oC
3
10
o
4
15
IKA=10mA,
ΔVKA: VREF to 16V
-0.5
-1.5
mV/V
IKA=10mA, R1=10KΩ, R2=∞
0.15
0.4
μA
0.1
0.4
μA
55
80
μA
VREF=0, VKA=18V
0.04
0.10
VKA=6V, VREF=0
0.01
0.05
VKA=VREF, IKA=1 to 100mA
f≤1.0kHz
0.05
0.15
VKA=VREF, IKA=10mA
VKA=VREF
IKA=10mA
0 to 70oC
-40 to 125 C
Ratio of Change in VREF to the
Change in Cathode Voltage
Typ
IKA=10mA, R1=10KΩ, R2=∞
TA=-40 to 125oC
VKA=VREF
SOT-23
84.84
SOT-23-5
84.84
TO-92
140.80
SOT-89
29.80
Dec. 2012 Rev. 2. 5
V
mV
μA
Ω
oC/W
BCD Semiconductor Manufacturing Limited
5
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
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
6
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Performance Characteristics
1.253
0.18
VKA=VREF
IKA=10mA
R1=10KΩ
R2=Infinite
IKA=10mA
0.17
Reference Current (μA)
Reference Voltage (V)
1.252
1.251
1.250
1.249
1.248
0.16
0.15
0.14
0.13
1.247
-50
-25
0
25
50
75
100
125
0.12
-50
150
-25
o
0
25
50
75
100
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Ambient Temperature
Figure 8. Reference Current vs. Ambient Temperature
o
400
150
VKA=VREF
VKA=VREF
300
o
TA=25 C
o
TA=25 C
Cathode Current (μA)
Cathode Current (mA)
100
50
0
-50
200
100
0
-100
-200
-100
-300
-150
-1
0
-1.0
1
-0.5
0.0
0.5
1.0
1.5
Cathode Voltage (V)
Cathode Voltage (V)
Figure 10. Cathode Current vs. Cathode Voltage
Figure 9. Cathode Current vs. Cathode Voltage
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Performance Characteristics (Continued)
Output
70
6.8K
0
TA=25 C
60
I KA
IKA=10mA
360
Voltage Gain (dB)
50
10μF
40
30
20
4.3K
10
0
-10
1k
10k
100k
GND
Small Signal Frequency (Hz)
Figure 11. Small Signal Voltage Gain vs. Frequency
10
Output
100Ω
Impedance (Ω)
IKA
1
50Ω
0.1
GND
0.01
1k
10k
100k
1M
Frequency (Hz)
Figure 12. Dynamic Impedance vs. Frequency
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Performance Characteristics (Continued)
Input and Output Voltage (V)
3
Input
Output
R1
1.8KΩ
2
Pulse
Generator
f=100KHz
1
R2
50Ω
Output
GND
0
-1
0
1
2
3
4
5
6
Time (μS)
Figure 13. Pulse Response of Input and Output Voltage
-0.3
Ratio of ΔVREF to ΔVKA (mV/V)
IKA=10mA
ΔVKA=VREF to 16V
-0.4
-0.5
-40
0
40
80
120
o
Ambient Temperature ( C)
Figure 14. Ratio of Delta Reference Voltage to the Ratio of Delta
Cathode Voltage vs. Ambient Temperature
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical ApplicationS
R3
V OUT
VIN
R1
VOUT=(1+R1/R2)*VREF
V REF
AZ432
R2
Figure 15. Shunt Regulator
VIN
R1
VOUT
R4
R2
VOUT=(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
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Typical Application (Continued)
VIN
AZ1117
2.5V/1A
R1
8.2K
R2
250
AZ432
R3
250
Figure18. Precision 2.5V/1A Regulator
R3
C1
R4
VOUT
R2 680
R5
R1
Q1
3
COMP
C2
U2
2
AZ432
PWM Controller
VFB
4
PS521
Figure 19. PWM Converter with Reference
Dec. 2012 Rev. 2. 5
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
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. 2. 5
BCD Semiconductor Manufacturing Limited
12
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
Mechanical Dimensions (Continued)
TO-92(Ammo Packing)
Unit: mm(inch)
4.700(0.185)
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. 100(0. 043)
1. 400(0.055)
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. 2. 5
BCD Semiconductor Manufacturing Limited
13
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
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. 2. 5
BCD Semiconductor Manufacturing Limited
14
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
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. 2. 5
BCD Semiconductor Manufacturing Limited
15
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ432
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. 2. 5
BCD Semiconductor Manufacturing Limited
16
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