Datasheet AZ431AK-BTRE1, AZ431AK-BTRG1, AZ431AN-BTRE1, AZ431AN-BTRG1, AZ431AR-BTRE1 Datasheet (BCD) [ru]

Data Sheet

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

General Description

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 V

cathode voltage.

The AZ431-B precision reference is offered in two
voltage tolerance: 0.4% and 0.8%.

This IC is available in 4 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5 and SOT-89.

(2.5V) and the corresponding maximum

REF

Features

· 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 Coeffi-

o

cient with 20PPM/

· Sink Current Capacity from 1mA to 100mA

· Low Output Noise

· Wide Operating Range of -40 to 125

C Typical

o

C

Applications

· Charger

· Voltage Adapter

· Switching Power Supply

· Graphic Card

· Precision Voltage Reference

TO-92(Bulk Packing) SOT-89

SOT-23

Figure 1. Package Types of AZ431-B

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

1

TO-92(Ammo Packing)

SOT-23-5

Data Sheet

REF

V

REF

CATHODE

ANODE

+

-

3

21

1

23

1

2

34

5

1

2

3

1

2

3

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Pin Configuration

N Package

(SOT-23)

ANODE

REF

CATHODE

Z Package

(TO-92(Bulk Packing))

CATHODE

ANODE

REF

R Package

(SOT-89)

REF ANODE

CATHODE

K Package
(SOT-23-5)

NC ANODE

*

(Note 1)

CATHODE

Note 1: Pin 2 is attached to substrate and

*

must be connected to ANODE or open

Z Package

(TO-92(Ammo Packing))

CATHODE

ANODE

REF

REF

Figure 2. Pin Configuration of AZ431-B (Top View)

Functional Block Diagram

Figure 3. Functional Block Diagram of AZ431-B

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

2

Data Sheet

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Ordering Information

AZ431 -

Package

SOT-23

SOT-23-5

TO-92

SOT-89

Circuit Type

Voltage Tolerance
A: 0.4%
B: 0.8%

Package
N: SOT-23 K: SOT-23-5

R: SOT-89 Z: TO-92

Tempera-

ture Range

-40 to

125oC

125oC

-40 to

125oC

-40 to

125oC

-40 to

Vo lt a ge

To le ra nc e

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

E1: Lead Free
G1: Green

TR: Tape and Reel or Ammo
Blank: Bulk

B: AZ431-B (20V)

Part Number Marking ID

Lead Free Green Lead Free Green

Packing

Typ e

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.

Nov. 2012 Rev. 3.2 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

Cathode Current Range (Continuous)

Reference Input Current Range

V

I

I

KA

KA

REF

20 V

-100 to 150 mA

10 mA

Z, R Package: 770

Power Dissipation

P

D

mW

N, K Package: 370

Junction Temperature

Storage Temperature Range

T

J

T

STG

150

-65 to 150

o

C

o

C

ESD (Human Body Model) ESD 2000 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

Cathode Current

Operating Ambient
Temperature Range

V

KA

I

KA

T

A

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

V

REF

18 V

1.0 100 mA

-40 125

4

o

C

Data Sheet

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Electrical Characteristics

Operating Conditions: TA=25oC, unless otherwise specified.

Parameter

Reference Voltage

0.4%

0.8% 2.480 2.500 2.520

Te st

Circuit

Deviation of Reference Voltage
Over Full Temperature Range

Ratio of Change in Reference
Voltage to the Change in
Cathode Voltage

Reference Current 5

Deviation of Reference Current
Over Full Temperature Range

Minimum Cathode Current for
Regulation

Off-state Cathode Current 6

Dynamic Impedance 4

Thermal Resistance

Symbol Conditions Min Typ Max Unit

2.490 2.500 2.510

C

4.5 8

4.5 10

4.5 16

-1.0 -2.7

-0.5 -2.0

0.7 4 μA

0.4 1.2 μA

0.4 1.0 mA

0.05 1.0 μA

0.2 0.5 Ω

REF

=10mA

o

C

0 to 70

-40 to 85

-40 to 125

=

ΔV

KA

10V to V

ΔV

=

KA

o

C

o

REF

4

4

5

V

REFVKA=VREF, IKA

REF

REF

KA

VKA=V

IKA= 10mA

IKA=10mA

ΔV

ΔV

ΔV

18V to 10V

I

REFIKA

5

4

ΔI

REF

I

KA

(Min)

I

KA

(Off)

Z

KA

=10mA, R1=10KΩ, R2=∞

IKA=10mA, R1=10KΩ, R2=∞

T

=-40 to 125oC

A

V

KA=VREF

=18V, V

V

KA

VKA=V

REF

=0

REF

, IKA=1 to 100mA

f ≤ 1.0KHz

SOT-23 177.65

SOT-23-5 177.65

θ

JC

TO-92 107.04

SOT-89 30.30

mV

mV/

o

C/W

V

V

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

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Data Sheet

I

OFF

V

IN

V

KA

V

IN

V

KA

R1

I

KA

V

REF

V

IN

V

KA

I

KA

R1

R2

V

REF

VKA=V

REF

(1+R1/R2)+ I

REF

*R1

I

REF

R3

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Electrical Characteristics (Continued)

Figure 4. Test Circuit 4 for VKA=V

Figure 5. Test Circuit 5 for VKA>V

REF

REF

Figure 6. Test Circuit 6 for I

OFF

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

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Data Sheet

-60 -40 -20 0 20 40 60 80 100 120 140

2.485

2.490

2.495

2.500

2.505

2.510

Reference Voltage (V)

Ambient Temperature (oC)

VKA = V

REF

IKA = 10mA

-60 -40 -20 0 20 40 60 80 100 120 140

0.0

0.5

1.0

1.5

R1=10K,R2=Infinite

I

KA

=10mA

Reference Current (μA)

Ambient Temperature (0C)

-2-10123

-100

-50

0

50

100

150

Cathode Current (mA)

Cathode Voltage (V)

VKA=V

REF

TA=250C

-1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5

-200

0

200

400

600

800

Cathode Current (μA)

Cathode Voltage (V)

VKA=V

REF

TA=250C

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Typical Performance Characteristics

Figure 7. Reference Voltage vs. Ambient Temperature Figure 8. Reference Current vs. Ambient Temperature

Figure 9. Cathode Current vs. Cathode Voltage Figure 10. Cathode Current vs. Cathode Voltage

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

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Data Sheet

-40-20 0 20406080100120

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Off-State Cathode Current (μA)

Ambient Temperature (oC)

VKA=18V

V

REF

=0

-40 -20 0 20 40 60 80 100 120

-1.4

-1.3

-1.2

-1.1

-1.0

-0.9

VKA=3.5V to 18V

ΔV

REF

/ ΔV

KA

(mV/V)

Ambient Temperature (oC)

10μF

8.2K

15K

I

KA

Output

242

GND

1k 10k 100k 1M

-10

0

10

20

30

40

50

60

70

Voltage Gain (dB)

Small Signal Frequency (Hz)

TA=250C

I

KA

=10mA

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Typical Performance Characteristics (Continued)

Figure 11. Off-State Cathode Current vs. Figure 12. Ratio of Delta Reference Voltage to the

Ambient Temperature

Ratio of Delta Cathode Voltage

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

Figure 13. Small Signal Voltage Gain vs. Frequency

8

Data Sheet

1K 10K 100K 1,000K

0.1

1

10

Reference Impedance (Ω)

Frequency (Hz)

IKA=10mA

T

A

=25oC

GND

Output

50

1K

I

KA

I

KA

R1 (10K)

R2

150

0.01 0.1 1 10

0

2

4

6

8

10

12

14

16

18

20

VKA=10V:No oscillation

VKA=15V:No oscillation

Stable

Cathode Current (mA)

Load Capacitance (μF)

VKA=V

REF

VKA=5V

Stable

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Typical Performance Characteristics (Continued)

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

Figure 16. Stability Boundary Conditions vs. Load Capacitance

Figure 15. Reference Impedance vs. Frequency

9

Data Sheet

Pulse
Generator
f=100KHz

220

50

Output

GND

0246

0

1

2

3

4

5

Input

Input and Output Voltage (V)

Time (μS)

Output

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Typical Performance Characteristics (Continued)

Figure 18. Pulse Response of Input and Output Voltage

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

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Data Sheet

V

IN

V

OUT

R1

R2

V

REF

AZ431-B

R3

V

IN V

OUT

R4

R1

R2

V

REF

R3

AZ431-B

I

OUT

V

IN

AZ431-B

R2

R1

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Typical Application

V

=(1+R1/R2)*V

OUT

Figure 19. Shunt Regulator

REF

Figure 20. High Current Shunt Regulator

V

=(1+R2/R3)*V

OUT

I

OUT=VREF

/R2 + I

REF

KA

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

Figure 21. Current Source or Current Limit

11

Data Sheet

AZ1117

V

IN

V

OUT

Adjust

8.2K

AZ431-B

R1

R2

R3

250

250

5V, 1A

PWM Controller

C1

R1

R2 680

U2

3

4

PS521

C2

2

R3

R4

R5

V

OUT

AZ431-B

Q1

COMP

VFB

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Typical Application (Continued)

Figure 22. Precision 5V 1A Regulator

Figure 23. PWM Converter with Reference

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

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Data Sheet

2.420(0.095)

2.660(0.105)

0.360(0.014)

0.760(0.030)

Φ

1.600(0.063)

MAX

12.500(0.492)

15.500(0.610)

1.270(0.050)
TYP

3.300(0.130)

3.700(0.146)

4.300(0.169)

4.700(0.185)

1.000(0.039)

1.400(0.055)

4.400(0.173)

4.800(0.189)

3.430(0.135)
MIN

0.320(0.013)

0.510(0.020)

0.000(0.000)

0.380(0.015)

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Mechanical Dimensions

TO-92(Bulk Packing) Unit: mm(inch)

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

13

Data Sheet

4.300(0.169)

4.700(0.185)

1

2.500(0.492)14.500(0.571)

2.540(0. 100

)

Ty

p

1.270(0.050

)

Typ

0. (0. 015)

0.

550

(0.022

)

4.400(0. 173
)

4.

800

(

0.

189

)

3.430(0. 135

)

MIN

0.320(0. 013

)

0

.510(0.020)

0.000(0.000

)

0. 380(0.015

)

MAX

1.100(0. 043

1.400(0. 055

)

3.300(0.130)

3.800(0.150)

Φ

1.600(0.063)

)

380

2.500(0. 098
)

4.000(0.157

)

13. 000(0. 512
)

15.000(0.591

)

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Mechanical Dimensions (Continued)

TO-92(Ammo Packing) Unit: mm(inch)

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

14

Data Sheet

2.300(0.091)

2.500(0.098)

1.200(0.047)

1.400(0.055)

0.920(0.036)

0.980(0.039)

0.390(0.015)

0.450(0.018)

1.900(0.075)REF

2.800(0.110)

3.000(0.118)

2.0°

3.0 °

0.500(0.020)

0.700(0.028)

1.050(0.041)REF

0.020(0.001)

0.100(0.004)

0.900(0.035)

1.100(0.043)

4×

R0.100(0.004)

7.0°

7.0°

0.550(0.022)REF

0.200(0.008)MIN

0.100(0.004) GAUGE PLANE

0.080(0.003)

0.150(0.006)

R0.100(0.004)

0.0°~10.0°

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Mechanical Dimensions (Continued)

SOT-23 Unit: mm(inch)

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

15

Data Sheet

2.820(0.111)

2

.

6

5

0

(

0

.

1

0

4

)

1

.

5

0

0

(

0

.

0

5

9

)

0

.

0

0

0

(

0

.

0

0

0

)

0.300(0.012)

0.950(0.037)

0

.

9

0

0

(

0

.

0

3

5

)

0.100(0.004)

0.200(0.008)

0

.

3

0

0

(

0

.

0

1

2

)

8°

0°

3.020(0.119)

1

.

7

0

0

(

0

.

0

6

7

)

2

.

9

5

0

(

0

.

1

1

6

)

0.400(0.016)

0

.

1

5

0

(

0

.

0

0

6

)

1

.

3

0

0

(

0

.

0

5

1

)

0.200(0.008)

0

.

6

0

0

(

0

.

0

2

4

)

1.800(0.071)

2.000(0.079)

0

.

7

0

0

(

0

.

0

2

8

)

R

E

F

T

Y

P

1

.

4

5

0

(

0

.

0

5

7

)

M

A

X

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Mechanical Dimensions (Continued)

SOT-23-5 Unit: mm(inch)

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

16

Data Sheet

45

1.030(0.041)REF

1.550(0.061)REF

4.400(0.173)

4.600(0.181)

0.900(0.035)

1.100(0.043)

3.950(0.156)

4.250(0.167)

3.000(0.118)
TYP

0.480(0.019)

2.300(0.091)

2.600(0.102)

0.320(0.013)

0.520(0.020)

3

10

2.060(0.081)REF

1.400(0.055)

1.600(0.063)

0.350(0.014)

0.450(0.018)

R0.150(0.006)

3

10

1.500(0.059)

0.320(0.013)REF

1.620(0.064)REF

2.210(0.087)REF

0.320(0.013)

0.520(0.020)

1.800(0.071)

ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B

Mechanical Dimensions (Continued)

SOT-89 Unit: mm(inch)

Nov. 2012 Rev. 3.2 BCD Semiconductor Manufacturing Limited

17

BCD Semiconductor Manufacturing Limited

IMPORTANT NOTICE

IMPORTANT NOTICE

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

cations 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

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 Limited does not convey any license under its patent rights or

of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or

other rights nor the rights of others.

other rights nor the rights of others.

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