UZHT431G01 [ZETEX]

Adjustable Positive Standard Regulator, 2.5V Min, 20V Max, PDSO4, SOT-223, SMT-3;


型号：	UZHT431G01
厂家：	ZETEX SEMICONDUCTORS
描述：	Adjustable Positive Standard Regulator, 2.5V Min, 20V Max, PDSO4, SOT-223, SMT-3 光电二极管输出元件调节器
文件：	总10页 (文件大小：455K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ZHT431

Adjustable precision Zener shunt regulator

Description

The ZHT431 is a three terminal adjustable The devices can be used as a replacement for

shunt regulator offering excellent temperature zener diodes in many applications requiring an

stability and output current handling capability improvement in zener performance.

up to 100mA. The device offers extended

operating temperature range working from -55

to +125°C. The output voltage may be set to

any chosen voltage between 2.5 and 20 volts

by selection of two external divider resistors.

Features

Applications

•

Surface mount SOT223 and SOT23

packages

•

Series and shunt regulator

Voltage monitor

•

2% and 1% tolerance

Over voltage / under voltage protection

Switch mode power supplies

Maximum temperature coefficient

67 ppm/°C

•

Temperature compensated for operation

over the full temperature range

Pinout information

•

Programmable output voltage

50␮A to 100mA current sink capability

Low output noise

V_Z

REF

GND

V_REF

GND

Wide temperature range -55 to +125°C

SOT223

Pinout - Top view

SOT23

Pinout - Top view

Ordering information

Order reference

Tolerance Package Part mark Status

(%)

Reel size Quantity

Tape

width

(inches)

Loose

12.5

per reel

4000

1500

4000

1500

3000

1000

ZHT431C01L

TO92 ZHT43101 Obsolete

TO92 ZHT43101 Obsolete Concertina

TO92 ZHT43102 Obsolete

TO92 ZHT43102 Obsolete Concertina

ZHT431C01STOB

ZHT431C01STZ

ZHT431C02L

ZHT431C02STOB

ZHT431C02STZ

ZHT431F01TA

ZHT431F02TA

ZHT431G01TA

ZHT431G02TA

Loose

12.5

SOT23

43C

43D

Released

8mm

12mm

SOT223 ZHT43101 Released

SOT223 ZHT43102 Released

Issue 4 - May 2006

www.zetex.com

ZHT431

Schematic diagram

V_Z

V_REF

Gnd

Absolute maximum rating

Cathode voltage (V )

20V

Power dissipation (T

=25°C)

amb

Cathode current

150mA

= 150°C)

jmax

Operating temperature

Storage temperature

-55 to 125°C

-55 to 150°C

SOT23

TO92

330mW

780mW

SOT223

Recommended operating conditions

Min.

Max.

Cathode voltage

Cathode current

20V

REF

50µA

100mA

Issue 4 - May 2006

www.zetex.com

ZHT431

Electrical characteristics test conditions (unless otherwise stated):T

=25°C

amb

Symbol Parameter

Value

Typ.

2.50

Units Conditions

Min.

2% 2.45

1% 2.475

Max.

2.55

2.525

Reference voltage

I =10mA (Fig.1),

REF

DEV

V =V

REF

Deviation of reference input

voltage over temperature

mV I =10mA, V =V

L Z REF

=full range (Fig1)

amb

Ratio of the change in

reference voltage to the

change in cathode voltage

-1.85

-1.0

-2.7

-2.0

mV/V V from V

to 10V

∆V_REF

----------------

∆V_Z

REF

I =10mA (Fig.2)

mv/V V from 10V to 20V

I =10mA (Fig.2)

Reference input current

0.12

0.04

1.0

0.2

␮A R1=10k, R2=O/C,

REF

l =10mA (Fig.2)

⌬I

Deviation of reference input

current over temperature

␮A R1=10k, R2=O/C,

REF

I =10mA T

=full

amb

range (Fig.2)

␮A V =V (Fig.1)

Minimum cathode current

for regulation

Zmin

REF

Off-state current

0.1

␮A V =20V, V =0V(Fig.3)

Z REF

Zoff

Dynamic output impedance

0.75

⍀

V =V (Fig.1), f=0Hz,

REF

I =1mA to 100mA

Deviation of reference input voltage, V

, is defined as the maximum variation of the reference

DEV

input voltage over the full temperature range.

The average temperature coefficient of the reference input voltage, V

is defined as:

REF

x1000000

ppm

°C

DEV

⎛

⎝

⎞

⎠

-------------

= -----------------------------------------

(T1 – T2)

REF

V_max

REF

The dynamic output impedance, R , is defined as:

V_min

∆V

R = ---------

∆I

V_dev= V_max- V_min

When the device is programmed with two externalresistors, R1

and R2, (fig 2) , the dynamic outputimpedance of the overall

circuit, R’, is defined as:

Temperature

R′ = R (1 + ------- )

Issue 4 - May 2006

www.zetex.com

ZHT431

Typical characteristics

Issue 4 - May 2006

www.zetex.com

ZHT431

Typical characteristics

I_Z

230

15k

9µF

8k25

100

10k

100k

IZ = 10mA, TA = 25°C

Frequency (Hz)

Gain v Frequency

Test Circuit for Open Loop Voltage Gain

220

Input Monitor

3.0

Repetitive pulse

2.0

Single pulse

1.0

Pulse

Generator

5.0

INPUT

0.2

0.4

0.6

0.8

1.0

Time (µs)

TA = 25°C

Pulse Response

Test Circuit for Pulse Response

100

150

Input

STABLE

10k

10p

100p

1000p

0.01µ

0.1µ

1µ

Load Capacitance (F)

Vref < VZ < 20, IZ = 10mA, TA = 25°C

Test Circuit for Stability Boundary Conditions

Stability Boundary Conditions

4-31

Issue 4 - May 2006

www.zetex.com

ZHT431

DC test circuits

I_L

V_Z

Input

I_Z

I_ZOFF

I_ref

V_ref

Fig 1 - Test circuit for V = V

Fig 2 - Test circuit for V > V

Fig 3 - Test circuit for for Of

ref

†

state current

Issue 4 - May 2006

www.zetex.com

ZHT431

Application circuits

V+Vout

Vref

1 +

Vref

Vout=

Vout= 1 +

Vref

Shunt regulator

Higher current shunt regulator

V+

ZSR***

Vout

Out

Common

30⍀

0.01µF

Vref

Vout

Vout_MIN= Vref+ Vreg

Vout= 1 +

Vref

Vout= 1 +

Vref

Output control of a

three terminal fixed regulator

Series regulator

V+

R1B

R1A

Output

Vref

Output

Vref

R2A

V _on

V _off

Input

V _TH

= V+

R2B

= 2.5V

R1B

R2B

1 +

Vref

Low limit =

High limit =

R1A

R2A

Single supply comparator

with temperature

compensated threshold

Over voltage / under voltage

protection circuit

Issue 4 - May 2006

www.zetex.com

ZHT431

Package outline - TO92

DIM

Millimeters

Inches

Min.

Max.

4.95

0.51

3.94

2.67

1.40

15.49

2.41

1.52

0.56

4.95

6°

Min.

0.170

0.014

0.130

0.095

0.045

0.500

0.085

0.045

0.016

0.175

4°

Max.

0.195

0.020

0.155

0.105

0.055

0.610

0.095

0.060

0.022

0.195

6°

4.32

0.36

3.30

2.41

1.14

12.70

2.16

1.14

0.41

4.45

4°

*°

Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches

Issue 4 - May 2006

www.zetex.com

ZHT431

Package outline - SOT23

3 leads

Dim.

Millimeters

Inches

Dim.

Millimeters

Inches

Min.

2.67

1.20

Max.

3.05

1.40

1.10

0.53

0.15

Min.

0.105

0.047

Max.

0.120

0.055

0.043

0.021

0.0059

Min.

Max.

0.51

0.10

2.50

0.64

Max.

0.020

0.004

0.0985

0.025

0.33

0.01

2.10

0.45

0.013

0.0004

0.083

0.018

0.37

0.085

0.015

0.0034

0.95 NOM

0.0375 NOM

1.90 NOM

0.075 NOM

Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches

Issue 4 - May 2006

www.zetex.com

ZHT431

Package outline - SOT223

DIM

Millimeters

Min Max

Inches

Min

DIM

Millimeters

Min Max

Inches

Max

0.071

0.004

0.033

0.122

0.013

0.264

Min

0.0905 BSC

0.181 BSC

Max

1.80

0.10

0.84

3.10

0.33

6.70

2.30 BSC

4.60 BSC

0.02

0.66

2.90

0.23

6.30

0.0008

0.026

0.114

0.009

0.248

6.70

7.30

0.264

0.287

3.30

0.90

3.70

0.130

0.355

0.146

Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches

Europe

Americas

Asia Pacific

Corporate Headquarters

Zetex GmbH

Zetex Inc

Zetex (Asia Ltd)

Zetex Semiconductors plc

Zetex Technology Park, Chadderton

Oldham, OL9 9LL

Streitfeldstraße 19

D-81673 München

Germany

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

For international sales offices visit www.zetex.com/offices

Zetex products are distributed worldwide. For details, see www.zetex.com/salesnetwork

This publication is 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 contact or be regarded as a representation relating to the products or services concerned.

The company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.

Issue 4 - May 2006

www.zetex.com

UZHT431G01 [ZETEX]

相关型号：

UZHT431G01TC

UZHT431G02TC

UZJ101

UZJ102

UZJ111

UZJ112

UZJ121

UZJ122

UZJ251

UZJ252

UZJ252B

UZJ261