BCD AZ431LBKTR-E1 Low voltage (1.24v) adjustable precision shunt regulator Datasheet

Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
General Description
Features
The AZ431L 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
1.24V and 18V with two external resistors.
·
·
The AZ431L precision reference is offered in two voltage tolerance: 0.5% and 1.0%.
Wide Programmable Precise Output Voltage from
1.24V 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
100mA
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.
SOT-89
AZ431L
·
·
·
·
·
Graphic Card
PC Motherboard
Voltage Adapter
Switching Power Supply
Charger
TO-92(Bulk Packing)
TO-92(Ammo Packing)
SOT-23-5
SOT-23
Figure 1. Package Types of AZ431L
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
1
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Pin Configuration
Z Package
(TO-92(Ammo Packing))
Z Package
(TO-92(Bulk Packing))
N Package
(SOT-23)
ANODE
3
CATHODE
3
CATHODE
2
ANODE
2
ANODE
1
REF
1
REF
K Package
(SOT-23-5)
NC
1
*
2
CATHODE
3
(Note 1)
3
1
2
REF
CATHODE
R Package
(SOT-89)
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 AZ431L (Top View)
Functional Block Diagram
CATHODE
+
REF
-
VREF
ANODE
Figure 3. Functional Block Diagram of AZ431L
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Ordering Information
AZ431L
E1: Lead Free
G1: Green
Circuit Type
TR: Tape and Reel or Ammo
Blank: Bulk
Voltage Tolerance
A: 0.5%
B: 1.0%
Package
TO-92
SOT-23
SOT-23-5
SOT-89
Temperature
Range
-40 to 125oC
-40 to 125oC
-40 to 125oC
-40 to 125oC
Voltage
Tolerance
Package
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%
AZ431LAZ-E1
AZ431LAZ-G1
AZ431LAZ-E1
AZ431LAZ-G1
Bulk
0.5%
AZ431LAZTR-E1
AZ431LAZTR-G1
AZ431LAZ-E1
AZ431LAZ-G1
Ammo
1.0%
AZ431LBZ-E1
AZ431LBZ-G1
AZ431LBZ-E1
AZ431LBZ-G1
Bulk
1.0%
AZ431LBZTR-E1
AZ431LBZTR-G1
AZ431LBZ-E1
AZ431LBZ-G1
0.5%
AZ431LANTR-E1
AZ431LANTR-G1
EA6
GA6
Tape & Reel
Ammo
1.0%
AZ431LBNTR-E1
AZ431LBNTR-G1
EA7
GA7
Tape & Reel
0.5%
AZ431LAKTR-E1
AZ431LAKTR-G1
E5A
G5A
Tape & Reel
1.0%
AZ431LBKTR-E1
AZ431LBKTR-G1
E6A
G6A
Tape & Reel
0.5%
AZ431LARTR-E1
AZ431LARTR-G1
E41A
G41A
Tape & Reel
1.0%
AZ431LBRTR-E1
AZ431LBRTR-G1
E41B
G41B
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.
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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
Power Dissipation
PD
Z, R Package
770
N, K Package
370
mW
TJ
Junction Temperature
TSTG
Storage Temperature Range
oC
150
-65 to 150
o
C
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
0.1
100
mA
-40
125
Operating Ambient Temperature Range
Aug. 2011 Rev. 2. 4
o
C
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Electrical Characteristics
(Operating Conditions: TA=25oC, unless otherwise noted.)
Test
Symbol
Circuit
Parameter
Reference Voltage
0.5%
1.0%
Deviation of Reference Voltage
Over Full Temperature Range
4
4
VREF
Min
Typ
Max
1.234
1.240
1.246
1.228
1.240
1.252
0oC to 70oC
2
10
-40oC
3
10
4
15
-0.5
-1.5
mV/V
0.15
0.4
µA
0.1
0.4
µA
55
80
µA
VREF=0, VKA=18V
0.04
0.10
µA
VKA=6, 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
∆VREF
IKA=10mA
to
85oC
-40oC to 125oC
∆VREF IKA=10mA,
∆VKA ∆VKA:VREF to 16V
Ratio of Change in VREF to the
Change in Cathode Voltage
5
Reference Input Current
5
IREF
Deviation of Reference Current
Over Full Temperature Range
5
∆IREF
Minimum Cathode Current for
Regulation
4
IKA
(Min)
Off-state Cathode Current
6
IKA
(Off)
Dynamic Impedance
4
ZKA
Thermal Resistance
Conditions
θJC
IKA=10mA, R1=10KΩ, R2=∞
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
88.00
Aug. 2011 Rev. 2. 4
Unit
V
mV
Ω
oC/W
BCD Semiconductor Manufacturing Limited
5
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Performance Characteristics
1.242
IKA=10mA
1.239
1.238
1.237
0.16
0.15
0.14
0.13
1.236
1.235
-50
R1=10KΩ
R2=Infinite
IKA=10mA
0.17
1.240
Reference Current (µA)
Reference Voltage (V)
0.18
VKA=VREF
1.241
-25
0
25
50
75
100
125
0.12
-50
150
-25
0
25
50
75
100
125
o
o
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Ambient Temperature
Figure 8. Reference Current vs. Ambient Temperature
400
150
VKA=VREF
100
VKA=VREF
300
o
o
TA=25 C
TA=25 C
Cathode Current (µA)
Cathode Current (mA)
200
50
0
-50
100
0
-100
-200
-100
-300
-150
-1
0
-1
1
0
1
Cathode Voltage (V)
Cathode Voltage (V)
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Cathode Current vs. Cathode Voltage
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Performance Characteristics (Continued)
Output
70
6.8K
0
TA=25 C
60
360
IKA=10mA
50
Voltage Gain (dB)
IKA
10µF
40
30
20
4.3K
10
5V
0
-10
1k
10k
100k
GND
Small Signal Frequency (Hz)
Figure 11. Small Signal Voltage Gain vs. Frequency
10
Dynamic Impedance (Ω)
Output
1
100Ω
IKA=1mA to 100mA
IKA
50Ω
0.1
0.01
1k
10k
100k
GND
1M
Frequency (Hz)
Figure 12. Dynamic Impedance vs. Frequency
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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
-0.30
IKA=10mA
∆VKA=VREF to 16V
Ratio of ∆VREF to ∆VKA (mV/V)
-0.35
-0.40
-0.45
-0.50
-0.55
-40
-20
0
20
40
60
80
100
120
o
Ambient Temperature ( C)
Figure 14. Ratio of Delta Reference Voltage to the Ratio of
Cathode Voltage vs. Ambient Temperature
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical ApplicationS
R3
V OUT
VIN
R1
VOUT=(1+R1/R2)*VREF
V REF
AZ431L
R2
Figure 15. Shunt Regulator
VIN
R1
VOUT
R4
R2
VOUT=(1+R2/R3)*VREF
VREF
AZ432
AZ431L
R3
Figure 16. High Current Shunt Regulator
R2
VIN
IOUT
IOUT=VREF/R2+IKA
R1
AZ431L
Figure17. Current Source or Current Limit
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Application (Continued)
VIN
AZ1117
5V/1A
R1
8.2K
R2
250
AZ431L
R3
250
Figure18. Precision 5V 1A Regulator
R3
C1
R4
VOUT
R2 680
R5
R1
Q1
3
COMP
C2
U2
2
AZ431L
PWM Controller
VFB
4
PS521
Figure 19. PWM Converter with Reference
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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)
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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 )
Φ
0.380(0.015)
0.550(0.022 )
2.540(0.100)
Typ
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
13
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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)
7.0°
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
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)
0.390(0.015)
0.450(0.018)
1.900(0.075)REF
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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)
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
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
Aug. 2011 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
16
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