ZTL431_08_技术文档

ZTL431, ZTL432

Cost effective adjustable precision shunt regulator

Description

The ZTL431 and ZTL432 are three terminal The ZTL432 has the same electrical specifications

adjustable shunt regulators offering excellent as the ZTL431 but has a different pin out in

temperature stability and output current SOT23 (F-suffix) and SOT23F (FF-suffix).

handling capability up to 100mA. The output

Both variants are available in 2 grades with

initial tolerances of 1% and 0.5% for the A and

B grades respectively.

voltage may be set to any chosen voltage

between 2.5 and 20 volts by selection of two

external divider resistors.

These are functionally equivalent to the TL431/

TL432 except for maximum operation voltage,

and have an ambient temperature range of -40

to 125°C as standard.

The devices can be used as a replacement for

zener diodes in many applications requiring an

improvement in zener performance.

Applications

Features

•

Opto-coupler linearization

Linear regulators

•

Temperature range ................ -40 to 125°C

Reference voltage tolerance at 25°C

•

0.5% ..................................... B grade

1% ......................................... A grade

Improved zener

Variable reference

•

0.2⍀ typical output impedance

Sink current capability ...... 1mA to 100mA

Adjustable output voltage...... V

to 20V

REF

Pin connections

ZTL431_F SOT23

ZTL432_F SOT23

ZTL431_FF SOT23F

ZTL432_FF SOT23F

ZTL431_H6 SC70-6

(top view)

Cathode 1

6 Anode

Ref

3

Cathode 3

†

2

3

5

4

†

N/C

1 Anode

1

Anode

N/C

NC

Cathode 2

Ref

2

REF

†

Connected internally to

substrate; should be left

floating or connected to Anode

ZTL431_E5 SOT235

ZTL431ASE5 SOT235

(top view)

N/C 1

5

4

Anode

Ref

1

2

3

Cathode

Anode

Ref

5

N/C

2

3

N/C*

Cathode

4

must be left floating

or connected to pin 5

*

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ZTL431, ZTL432

Ordering information

Status^*

Tol.

Order code

Pack

Part mark

Reel Size

Tape width

(mm)

Quantity

per reel

ZTL431A

31A

ZTL431ACSTZ

ZTL431AE5TA

ZTL431AFFTA

ZTL431AFTA

ZTL431AH6TA

ZTL431ASE5TA

ZTL432AFFTA

ZTL432AFTA

ZTL431BCSTZ

ZTL431BE5TA

ZTL431BFFTA

ZTL431BFTA

ZTL431BH6TA

ZTL432BFFTA

ZTL432BFTA

TO92

Obsolete

Active

Obsolete

Active

Concertina

7”, 180mm

Concertina

7”, 180mm

N/A

8

1500

3000

1500

3000

SOT23-5

SOT23F

SOT23

SC70-6

SOT23-5

SOT23F

SOT23

TO92

31A

8

31A

8

1%

31A

8

S2A

32A

8

32A

8

ZTL431B

31B

N/A

8

SOT23-5

SOT23F

SOT23

SC70-6

SOT23F

SOT23

31B

8

0.5%

31B

8

31B

8

32B

8

32B

8

NOTES:

*

For availability of preview status devices contact your local Zetex representative

Absolute maximum ratings

Cathode voltage (V ) .............................................................. 20V

KA

Continuous cathode current (I ) ........................................ 150mA

KA

Reference input current range (I )..................... -50 µA to 10mA

REF

Operating junction temperature ................................. -40 to 150°C

Storage temperature ................................................... -55 to 150°C

Operation above the absolute maximum rating may cause device failure. Operation at the

absolute maximum ratings, for extended periods, may reduce device reliability.

Unless otherwise stated voltages specified are relative to the ANODE pin.

Package thermal data

Package

⍜

P

DIS

JA

T =25°C, T = 150°C

A

J

TO92

SOT23

SOT23F

SOT23-5

SOT70-6

160°C/W

380°C/W

138°C/W

250°C/W

380°C/W

780mW

330mW

900mW

500mW

330mW

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ZTL431, ZTL432

Recommended operating conditions

Min

Max

Units

V

Cathode voltage

V

20

V

KA

ref

I

Cathode current

1

100

125

mA

°C

KA

T

Operating ambient temperature range

-40

A

Electrical characteristics

Electrical characteristics over recommended operating conditions, T = 25°C, unless otherwise stated.

A

Symbol Parameter

Conditions

Min.

2.475

2.487

Typ. Max. Units

V

Reference voltage

V

I

= V

REF

= 10mA

ZTL43_A

ZTL43_B

2.5

2.525

2.513

V

REF

KA

V

Deviation of reference

voltage over full

temperature range

T = 0 to 70°

6

16

34

DEV

A

V

= V

= 10 mA

mV

KA

REF

T = -40 to 85°C

14

A

I

KA

T = -40 to 125°C

14

A

ΔV

Ratio of change in

reference voltage

to the change in

cathode voltage

V

= V to 10

REF

-1.4

-1.0

-2.7 mV/V

-2.0

REF

KA

I

= 10mA

KA

= 10V to 20V

I

Reference input

current

I

= 10mA, R1 = 10k⍀

2

4

µA

REF

KA

R = OC

2

I

= 10mA

T = 0 to 70°C

0.8

0.4

1.2

2.5

0.6

KA

A

ΔI

I

deviation over full

µA

R = 10k⍀

R = OC

REF

T = -40 to 85°C

1

A

temperature range

2

T = -40 to 125°C

A

I

Minimum cathode

current for regulation

Off state current

V

= V

REF

mA

KA(MIN)

KA

V

= 20V, V

= 0V

0.1

0.2

0.5

µA

KA(OFF)

KA

REF

R

Dynamic output

impedance

= V , f = 0Hz

⍀

Z

REF

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ZTL431, ZTL432

Typical characteristics

I_KA= 10mA

V_REF= V_KA

1000

900

800

700

600

500

400

300

200

100

SOT23F

TO92

SOT23-5

SOT23

SC70-6

0

25

50

75

100

125

Ambient temperature (°C)

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ZTL431, ZTL432

Typical characteristics

V_KA

I_KA

60

50

40

30

20

10

0

100

1000

10000

100000

1000000

Frequency (Hz)

I_KA

Gain vs Frequency

V_KA

100

90

80

70

60

50

40

30

20

10

0

I_KA

10.0E-12

100.0E-12

1.0E-9

10.0E-9

100.0E-9

1.0E-6

Load Capacitance (F)

V_REF< V_KA< 20, I_KA= 10mA, T_A= 25°C

Stability Boundary Condition

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ZTL431, ZTL432

Application cicuits

V+

V_OUT

V+

V_OUT

R1

R2

R1

V_REF

R2

V_REF

V_OUT

V_REF

V_OUT

Higher current shunt

regulator

Shunt regulator

V+

ZSR***

V+

V_OUT

In

Out

Common

30⍀

R1

V_REF

R2

0.01␮F

R1

V_OUT

V_REF

R2

V_OUT(MIN)= V_REF+ V_REG

V_OUT

V_REF

V_OUT

V_REF

Output control of a three

terminal fixed regulator

Series regulator

V+

R1

V+

R1

V_REF

Output

V_REF

R2a

Input

V_ON~ 2V

R2b

V_OFF= V₊

V_TH= 2.5V

V_REF

Single supply comparator

with temperature

compensated threshold

Over voltage / under voltage

protection circuit

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ZTL431, ZTL432

DC test circuits

I_L

V_KA

I_KA

I_KA(OFF)

I_REF

V_REF

Figure 1 Test circuit for

Figure 2 Test circuit for

Figure 3 Test circuit for

V_KA= V_REF

V_KA> V_REF

off state current

Notes

Deviation of reference input voltage, Vdev, is

defined as the maximum variation of the

reference input voltage over the full

temperature range.

The average temperature coefficient of the

reference input voltage, V is defined as:

ref

V_DEV× 1, 000, 000

V_REF(ppm°C) = ------------------------------------------------

V_REF(T1 – T2)

The dynamic output impedance, R , is

z

defined as:

ΔV_z

R_z= ---------

ΔI_z

When the device is programmed with two

external resistors, R1 and R2, (fig 2), the

dynamic output impedance of the overall

circuit, R' , is defined as:

z

R1

R2

⎛

⎞

R'_z= R_z1 + -------

⎝

⎠

Stability boundary

The ZTL431 and ZTL432 are stable with a

range of capacitive loads. A zone of instability

exists as demonstrated in the typical

characteristic graph on page 5. The graph

shows typical conditions. To ensure reliable

stability a capacitor of 4.7nF or greater is

recommended between anode and cathode.

Issue 14 - January 2008

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ZTL431, ZTL432

Pin connections - obsolete devices

ZTL431_C TO92

(underside view)

V

1

2

z

G

^ndObsolete

ref

3

V

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ZTL431, ZTL432

Packaging details - SOT23

E

Dim. Millimeters

Min. Max. Min. Max.

1.12 0.044 e1

A1 0.01 0.10 0.0004 0.004

Inches

Dim. Millimeters

Min. Max. Max. Max.

1.90 NOM 0.075 NOM

Inches

A

-

E

2.10

1.20

0.25

0.45

-

2.64 0.083 0.104

1.40 0.047 0.055

0.62 0.018 0.024

e

b

C

D

e

0.30 0.50 0.012 0.020 E1

0.085 0.120 0.003 0.008

2.80 3.04 0.110 0.120 L1

0.95 NOM 0.0375 NOM

e1

b

L

3 leads

-

Note: Controlling dimensions are in millimeters.

Approximate dimensions are provided in inches

D

L1

E1

A

L

c

A1

Package details - SC70-6

Dim. Millimeters

Inches

Dim Millimeters

.

Inches

Min. Max. Min. Max.

Min. Max. Max. Max.

A

0.80

-

1.10 0.0315 0.0433

0.10 0.0039 E1 1.25

1.00 0.0315 0.0394

0.30 0.006 0.0118 e1

E

2.10 BSC

0.0826 BSC

A1

-

1.35 0.0492 0.0531

A2 0.80

e

0.65 BSC

1.30 BSC

0.0255 BSC

0.0511 BSC

b

C

D

0.15

0.08

0.25 0.0031 0.0098

0.0787 BSC

L

0.26

0°

0.46 0.0102 0.0181

8° 0° 8°

2.00 BSC

␣

Note: Controlling dimensions are in millimeters.

Approximate dimensions are provided in inches

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ZTL431, ZTL432

Package details SOT23F

Dim. Millimeters

Inches

Dim. Millimeters

Inches

c

D

e1

b

e

Min. Max. Min. Max.

Min. Max. Max. Max.

L1

L

A

0.80 1.00 0.031 0.0394

E

2.30

1.50

1.10

0.48

0.39

0.05

0°

2.50 0.0906 0.0984

1.70 0.0590 0.0669

1.26 0.0433 0.0496

0.68 0.0189 0.0268

0.41 0.0153 0.0161

0.15 0.0019 0.0059

A1

-

0.10 0.00 0.0043 E1

E1

E

A2 0.06 0.16 0.0024 0.0006 E2

b

c

0.39 0.41 0.0153 0.0161

L

0.11 0.20 0.0043 0.0079 L1

b

A1

D

e

2.80 3.00 0.1102 0.1181

R

O

-

R

0.95 ref

1.90 ref

0.0374 ref

0.7480 ref

12°

-

0°

-

12°

-

A

e1

-

Note: Controlling dimensions are in millimeters.

Approximate dimensions are provided in inches

Package details - TO92

Dim.

Millimeters

Min.

Inches

Max.

4.95

0.51

3.50

3.94

5.88

2.94

15.49

2.41

1.52

0.56

4.95

6°

Min.

0.170

0.014

0.099

0.130

0.192

0.096

0.500

0.085

0.045

0.016

0.175

4°

Max.

A

b

4.32

0.36

2.50

3.30

4.88

2.44

12.70

2.16

1.14

0.41

4.45

4°

0.195

0.020

0.138

0.155

0.232

0.116

0.610

0.095

0.060

0.022

0.195

6°

C

E

e

e1

L

R

S1

W

D

*°

Note: Controlling dimensions are in millimeters.

Approximate dimensions are provided in inches

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ZTL431, ZTL432

Packaging details - SOT23-5

Dim.

Millimeters

Inches

Min.

0.90

0.00

0.90

0.20

0.09

2.70

2.20

1.30

Max.

1.45

0.15

1.30

0.50

0.26

3.10

3.20

1.80

Min.

Max.

A

A1

A2

b

0.0354

0.00

0.0570

0.0059

0.0511

0.0196

0.0102

0.1220

0.1181

0.0708

0.0354

0.0078

0.0035

0.1062

0.0866

0.0511

C

D

E

E1

e

0.95 REF

1.90 REF

0.0374 REF

0.0748 REF

e1

L

0.10

0°

0.60

30°

0.0039

0°

0.0236

30°

a°

Note: Controlling dimensions are in millimeters.

Approximate dimensions are provided in inches

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ZTL431, ZTL432

Definitions

Product change

Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or

service. Customers are solely responsible for obtaining the latest relevant information before placing orders.

Applications disclaimer

The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for

the user’s application and meets with the user’s requirements. No representation or warranty is given and no liability whatsoever is

assumed by Zetex with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights

arising from such use or otherwise. Zetex does not assume any legal responsibility or will not be held legally liable (whether in contract,

tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business, contract,

opportunity or consequential loss in the use of these circuit applications, under any circumstances.

Life support

Zetex products are specifically not authorized for use as critical components in life support devices or systems without the express written

approval of the Chief Executive Officer of Zetex Semiconductors plc. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body

or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labelling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to

cause the failure of the life support device or to affect its safety or effectiveness.

Reproduction

The product specifications contained in this publication are issued to provide outline information only which (unless agreed by the

company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a

representation relating to the products or services concerned.

Terms and Conditions

All products are sold subjects to Zetex’ terms and conditions of sale, and this disclaimer (save in the event of a conflict between the two

when the terms of the contract shall prevail) according to region, supplied at the time of order acknowledgement.

For the latest information on technology, delivery terms and conditions and prices, please contact your nearest Zetex sales office.

Quality of product

Zetex is an ISO 9001 and TS16949 certified semiconductor manufacturer.

To ensure quality of service and products we strongly advise the purchase of parts directly from Zetex Semiconductors or one of our

regionally authorized distributors. For a complete listing of authorized distributors please visit: www.zetex.com/salesnetwork

Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased through unauthorized sales channels.

ESD (Electrostatic discharge)

Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting devices.

The possible damage to devices depends on the circumstances of the handling and transporting, and the nature of the device. The extent

of damage can vary from immediate functional or parametric malfunction to degradation of function or performance in use over time.

Devices suspected of being affected should be replaced.

Green compliance

Zetex Semiconductors is committed to environmental excellence in all aspects of its operations which includes meeting or exceeding

regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to

reduce the use of hazardous substances and/or emissions.

All Zetex components are compliant with the RoHS directive, and through this it is supporting its customers in their compliance with

WEEE and ELV directives.

Product status key:

“Preview”

“Active”

Future device intended for production at some point. Samples may be available

Product status recommended for new designs

“Last time buy (LTB)”

Device will be discontinued and last time buy period and delivery is in effect

“Not recommended for new designs” Device is still in production to support existing designs and production

“Obsolete”

Production has been discontinued

Datasheet status key:

“Draft version”

This term denotes a very early datasheet version and contains highly provisional information, which

may change in any manner without notice.

“Provisional version”

“Issue”

This term denotes a pre-release datasheet. It provides a clear indication of anticipated performance.

However, changes to the test conditions and specifications may occur, at any time and without notice.

This term denotes an issued datasheet containing finalized specifications. However, changes to

specifications may occur, at any time and without notice.

Zetex sales offices

Europe

Americas

Asia Pacific

Corporate Headquarters

Zetex GmbH

Kustermannpark

Balanstraße 59

D-81541 München

Germany

Zetex Inc

Zetex (Asia Ltd)

Zetex Semiconductors plc

Zetex Technology Park, Chadderton

Oldham, OL9 9LL

700 Veterans Memorial Highway

Hauppauge, NY 11788

USA

3701-04 Metroplaza Tower 1

Hing Fong Road, Kwai Fong

Hong Kong

United Kingdom

Telefon: (49) 89 45 49 49 0

Fax: (49) 89 45 49 49 49

europe.sales@zetex.com

Telephone: (1) 631 360 2222

Fax: (1) 631 360 8222

usa.sales@zetex.com

Telephone: (852) 26100 611

Fax: (852) 24250 494

asia.sales@zetex.com

Telephone: (44) 161 622 4444

Fax: (44) 161 622 4446

hq@zetex.com

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型号：	ZTL431_08
厂家：	ZETEX SEMICONDUCTORS
描述：	Cost effective adjustable precision shunt regulator 成本效益的可调节精密并联稳压器稳压器
文件：	总12页 (文件大小：427K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ZTL431_08 [ZETEX]

相关型号：

ZTL432

ZTL432

ZTL432AFFTA

ZTL432AFFTA

ZTL432AFTA

ZTL432AFTA

ZTL432AQ

ZTL432AQFFTA

ZTL432AQFTA

ZTL432BFFTA

ZTL432BFFTA

ZTL432BFTA