AP431SMG_技术文档

AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Description

Features

The AP431 and AP431A are 3-terminal adjustable precision

shunt regulators with guaranteed temperature stability over the

applicable extended commercial temperature range. The output

voltage may be set at any level greater than 2.495V (V_REF) up to

36V merely by selecting two external resistors that act as a

voltage divider network. These devices have a typical output

impedance of 0.2Ω. Active output circuitry provides very sharp

turn-on characteristics, making these devices excellent improved

replacements for Zener diodes in many applications.

•

Precision reference voltage

AP431 : 2.495V ± 1%

AP431A : 2.495V ± 0.5%

Sink current capability: 200mA

Minimum cathode current for regulation: 300µA

Equivalent full-range temp coefficient: 30 ppm/^oC

Fast turn-on response

•

Low dynamic output impedance: 0.2Ω

Programmable output voltage to 36V

Low output noise

The precise (+/-) 1% Reference voltage tolerance of the

Packages: SOT-23 and SC-59. SOT-25, PowerDI^TM5,

SOP-8L, and DFN under development

AP431/AP431A make it possible in many applications to avoid

the use of a variable resistor, consequently saving cost and

eliminating drift and reliability problems associated with it.

Ordering Information

A P 4 3 1 A X X X

Packing

Reference Voltage

Package

Lead-Free

SA

SB

SN

PB

SM

FB

: SOT23

: SOT25

: SC-59

: PowerDI™5

: SOP-8L

: DFN

Tolerance:

Blank : +/- 1%

F : Lead-Free

G : Green

Blank : Tube or bulk

-7/-13 : Taping

A

: +/- 0.5%

7” Tape and Reel

13” Tape and Reel

Device

Package Packaging

Quantity

Part

Quantity

Part

(Note 1)

Code

(Note 2)

Number

Suffix

AP431(A)SA

AP431(A)SB

AP431(A)SN

AP431(A)PB

AP431(A)SM

AP431(A)FB

SA

SOT-23

SOT-25

SC-59

PowerDI™5

SOP-8L

DFN

3000/Tape & Reel

NA

3000/Tape & Reel

-7

10,000/Tape & Reel

5000/Tape & Reel

10,000/Tape & Reel

-13

SB

SN

PB

SM

FB

-13

-7

NA

-7

-13

Typical Application Circuit

VIN

V^OUT

+

R1

R2

Cⁱⁿ

Cout

DP431

VOUT = (1+R1/R2)VREF

Precision Regulator

Notes: 1. Suffix “A” denotes AP431A device.

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Block Diagram

Symbol

Cathode (C)

REF (R)

+

-

REF (R)

VREF

Anode (A)

Pin Configuration

Pin Configuration (Top View)

Package

SC-59

Pin Configuration (Top View)

Package

NC

1

2

3

2

REF

5

4

ANODE

REF

SOT25

ANODE

1

CATHODE

1

2

3

4

8

7

CATHODE

ANODE

NC

REF

3 CATHODE

2 REF

ANODE

NC

ANODE 1

PowerDI™5

SOP-8L

6

5

3

REF

3 CATHODE

2 REF

ANODE

1

DFN

ANODE 1

SOT23

2

CATHODE

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Absolute Maximum Ratings

Cathode Voltage ……………………………......…..............................……………...…...............…..……………….………...……….36V

Continuous Cathode Current ………………………….……...............................…………...........…………………….... -10mA ~ 250mA

Reference Input Current Range ……………..………..............……...............................……........……………….…..………........ 10mA

Operating Temperature Range (AP431)…………..…….…….....………………...........…..........……………….…….…......-20°C ~ 85°C

Lead Temperature………………………….……..….…….…………....…………………….............………………..….....…............ 260°C

Storage Temperature ……………………………......…....…..........………………..…..........….…...………………...…..... -65°C ~ 150°C

Power Dissipation (Notes 3, 4)

SOT-25 Package .………….....…………………….....…....………………...…......…........ 250mW

PowerDI™5 Package ….…………..………................….........………………..…..........… 900mW

SC-59 Package......................................................................………………....…............ 400mW

SOP-8L Package ……………..…………….......…………………………………....…....…. 600mW

DFN Package....................................................................…………………..………........ 250mW

Note 3. T_J, max =150°C

Note 4. Ratings apply to ambient temperature at 25°C

Electrical Characteristics (T_A=25^oC, V⁺=+5.0V, unless otherwise stated)

PARAMETER

TEST CONDITIONS

SYMBOL MIN. TYP. MAX. UNIT

2.495

⎯

V_KA= V_REF

I _KA= 10mA (Fig.1)

,

AP431

AP431A

2.470

2.482

2.520

2.507

Reference voltage

V_REF

V

Deviation of Reference input voltage over

temperature (Note 3)

V_KA= V_REF, I_KA= 10mA,

Ta = Full range (Fig.1)

V_REF

8.0

20

mV

⎯

V_KA= 10V ~V_REF

V_KA= 36V ~10V

R1 = 10KΩ,R2 = ∞ I_KA= 10mA (Fig.2)

R1 = 10KΩ,R2 = ∞ I_KA= 10mA

Ta = Full range (Fig.2)

∆V_REF

∆V_KA

I_REF

-1.4

-1

1.4

-2.0

-2

3.5

mV/V

µA

Ratio of the change in Reference voltage to

the change in Cathode voltage

⎯

I_KA= 10mA (Fig.2)

Reference input current

Deviation of Reference input current over

temperature

0.4

1.2

αI_REF

⎯

µA

Minimum Cathode current for regulation

Off-state current

V_KA= V_REF(Fig.1)

V_KA= 36V, V_REF= 0V (Fig.3)

I_KA(MIN)

I_KA(OFF)

0.19

0.1

0.5

1.0

mA

µA

⎯

V

_KA= V_REFV _KA= V_REF

∆I_KA= 0.1mA ~ 15Ma

Dynamic output impedance (Note 4)

0.2

0.5

Ω

|Z_KA

|

⎯

Frequency ≤ 1KHz (Fig.1)

VMAX

VMIN

VDEV = VMAX - VMIN

TI

T2

Temperature

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Electrical Characteristics (Continued) (T_A=25^oC, V⁺=+5.0V, unless otherwise stated)

(Note 5)

Note 5.

Deviation of reference input voltage, V_DEV, is defined as the maximum variation of the reference over the full temperature

range. The average temperature coefficient of the reference input voltage αV_REFis defined as:

V_DEV

(

)⋅10⁶

V_REF(25°C)

T₂− T₁

ppm

……………………..……………….. (

)

α V_REF

=

°C

Where:

T2 – T1 = full temperature change.

αV_REFcan be positive or negative depending on whether the slope is positive or negative.

Note 4. The dynamic output impedance, R_Z, is defined as:

∆V_KA

∆I_KA

Z_KA

=

When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output impedance of the overall

circuit, is defined as:

∆v

∆i

R1

R2

'

Z_KA

=

≈Z_KA(1+

)

Test Circuits

Input

IN

V_KA

I_KA

V_KA

I_KA

V_KA

R1

R2

IREF

V^REF

IZ(OFF)

V^REF

Note:VKA=VREF(1+R1/R2)+IREFxR1

Fig 2. Test Circuit for V_KA>V_REF

Fig 1. Test Circuit for V_KA= V_REF

Fig 3. Test Circuit for Off-State Current

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Typical Performance Characteristics

Cathode Current vs Cathode Voltage

Cathode Current (uA) vs Cathode Voltage

100

600

400

200

V_KA=V_ref

Ta=25^oC

V_KA=V_ref

Ta=25^oC

0

-100

-200

-1.5

-0.5

0.5

Cathode Voltage (v)

1.5

2.5

-1

-0.5

0

0.5

1

1.5

2

2.5

Cathode Voltage(v)

Reference Voltage vs Free-Air Temperature

Reference Input Current vs Free Temperature

2

2500

R1=10K

1.8

I_KA=10mA

2495

2490

2485

2480

1.6

1.4

1.2

1

-40 -30 -20 -10

0

10 20 30 40 50 60 70 80

-50

-25

0

25

50

75

100

125

Free-Air Temperature (^oC)

o

Free-Air Temperature (

C)

Change in Reference Voltage vs Cathode Voltage

0

-2

I_KA=10mA

-4

Ta=25^oC

-6

-8

-10

-12

0

5

10

15

20

25

30

Cathode Voltage (V)

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Typical Performance Characteristics (Continued)

Small-Signal Voltage Amplification vs Frequency

60

50

40

30

20

10

0

I_KA=10mA

T_A=25^oC

Output

232Ω

I_KA

15KΩ

9µF

-

+

-

8.25KΩ

GND

Test Circuit for Voltage Amplification

10K

1K

100K

1M

10M

f-Frequency-Hz

Reference Impedance vs Frequency

100

I

_KA=10mA

T =25^oC

A

1KΩ

Output

I

KA

10

1

50Ω

-

+

GND

Test Circuit for Reference Impedance

0.1

1K

10K

100K

1M

10M

f-Frequency-Hz

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Typical Performance Characteristics (Continued)

Pulse Response

6

5

4

3

2

1

0

T_A=25^oC

Input

220Ω

Output

Pulse

Generator

f=100kHz

50Ω

Output

GND

Test Circuit for Pulse Response

-1

0

1

2

3

4

5

6

7

t-Time-µS

150Ω

STABILITY BOUNDARY CONDITIONS^†

100

TA=25^oC

AV_KA=V

ref

I

KA

90

80

70

60

50

40

30

20

10

0

B V_KA=5V

+

-

V_BATT

C V_KA=10V

D V_KA=15V

C_L

B

Stable

C

Stable

Test Circuit for Curve A

A

D

I

KA

150Ω

R1=10KΩ

C_L

+

-

R2

V_BATT

0.001

0.01

0.1

1

10

C_L-Load Capacitance-µF

The areas under the curves represent conditions that may cause the

device to oscillate. For curves B, C, and D, R2 and V+ were adjusted

to establish the initial V_KAand I_KAconditions with C_L=0.V_BATTand

C_Lwere then adjusted to determine the ranges of stability.

Test Circuit for Curve B, C, and D

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Application Examples

VIN

V_IN

I_OUT

R_CL

R

V_IN

R1B

R1A

+

ON

R2A

R2B

OFF

V_IN

-V

Delay =

RC x ln (

)

I_OUT= V_REF/ RCL

<

High Limit

LED on when Low Limit

V

IN

REF

≈

Low Limit

High Limit

V

(1+R1B/R2B)

(1+R1A/R2A)

REF

≈

V

REF

Fig. 5 Delay

Timer

Fig. 4 Voltage

Monitor

Fig. 6 Current Limiter or Current

Source

V_IN

I_OUT

V_IN

V_OUT

V_IN

V_OUT

PUSE

R1

R2

RS

L^IMIT

(1 + R1/R2) x V_REF

V_OUT

= (1 + R1/R2) x V_REF

I_OUT= V_REF/ RS

Fig. 7 Constant-Current

Sink

Fig. 8 Higher-Current Shunt

Regulator

Fig. 9 Crow Bar

VIN

R1A

R1B

Output ON when

Low Limit <V_IN< High Limit

+

V^BE

R2A

R2B

(1 + R1B/R2B) +V_BE

(1 + R1A/R2A)

Low Limit

High Limit

V_REF

Fig.10 Over-Voltage / Under-Voltage Protection Circuit

DS30714 Rev. 2 - 2

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AP431/AP431A

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Package Diagrams (All Dimensions in mm)

(1) SOT-25

(2) SC-59

0.35/0.50

2.70/3.00

Typ 2.80

2.70/

3.00

TOP VIEW

1.90

2.90/3.10

Typ 3.00

2.90/3.10

1.00/

1.30

1.00/1.30

Typ 1.10

0.10/0.20 Typ 0.15

0.10/0.20

0.013/0.10

Typ 0.05

0.013/0.10

Typ Typ

0.95 0.55

0.95

0.35/0.55

Typ 0.40

0°/8°

(3) PowerDI™5

(4) SOT-23

0.37/0.51

1.05/

1.15

3.90/

4.05

1.70/

1.88

0.33/0.43

0.50/

0.65

6.40/

6.60

TOP VIEW

0.89/

1.03

5.30/5.45

0.45/0.60

G

0.50/

0.65

2.80/3.00

0.33/0.43

0.085/0.180

0.80/

0.99

0.80/

0.99

0.013/

0.10

3.90/4.05

3.05 NOM

0.45/0.61

0°/8°

0.75/0.95

1.70/1.88

6.40/6.60

3.55

NOM

1.20/1.50

0.80/0.99

0.50/0.65

0.80/0.99

PowerDI is a trademark of Diodes Incorporated.

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

(5) SOP-8L

(6) DFN1006-3

8

5

4

0/0.05 Typ 0.03

0.95/1.05

Typ 1.00

5.90/6.10

Typ 6.00

0.95/1.05

Typ 1.00

0.10/0.20

Typ 0.15

1

0.45/0.55

Typ 0.50

0.35

0.20/0.30

Typ 0.25

0.20/0.30

Typ 0.25

0.30/0.50

Typ 0.40

3.80/3.90

Typ 3.85

Typ

0.40

0.60/0.70

Typ 0.65

0.35

7°

0.15/0.25

Typ 0.20

1.40/1.50

Typ 1.45

0.08/0.25

Typ 0.15

3.85/3.95

Typ 3.90

1.27

4.85/4.95

Typ 4.90

Marking Information

(1) SOT-23/SOT-25/SC-59

(Top View)

SOT23/SOT-25/SC-59

X X X

Date Code

Y : Year

M: Month (1~D)

Marking Code

X : Blank : Lead Free

G : Green

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

(2) SOP

(Topview)

Logo

AP431X

YWWX

Date code

: Year

Y

WW: Nth w eek

Accuracy

Lead Free

Blank : 2.495 ± 1%

Blank : Lead Free

G : Green

2.495 ± 0 .5%

A :

(3) PowerDI^™5

(Topview)

AP431X

YWW X

Logo

Date code

: Year

Y

WW: Nth w eek

Accuracy

Lead Free

2.495 ± 1%

Blank :

A :

Blank : Lead Free

G : Green

2.495 ± 0 .5%

(4) DFN

(Topview)

Marking Code

XX

Lead Free

Blank : Lead Free

Green : Underlined First code

Date Code Key

Year

2006

2007

2008

2009

2010

Code

T

U

V

W

X

Month

Code

Jan

Feb March Apr

May

Jun

Jul

Aug Sep

Oct

Nov

Dec

1

2

3

4

5

6

7

8

9

O

N

D

DS30714 Rev. 2 - 2

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AP431/AP431A

ADJUSTABLE PRECISION SHUNT REGULATOR

Marking Code Table

Package

(Note 6)

Marking Code

Date Code

Device

AP431SA

SOT-23

D1

D2

D1

D2

D1

YM

AP431ASA

AP431SB

AP431ASB

AP431SN

AP431ASN

AP431PB

AP431APB

AP431SM

AP431ASM

AP431FB

SOT-23

SOT-25

SC-59

D2

YM

AP431

AP431A

AP431

AP431A

D1

YWW

⎯

PowerDI™5

SOP-8L

DFN

D2

AP431AFB

DFN

⎯

Notes: 6. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.

DS30714 Rev. 2 - 2

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型号：	AP431SMG
厂家：	DIODES INCORPORATED
描述：	Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PDSO8, GREEN, SOP-8 光电二极管
文件：	总12页 (文件大小：317K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AP431SMG [DIODES]

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