TL431LK-AF5-C-R [UTC]

PROGRAMMABLE PRECISION REFERENCE;


型号：	TL431LK-AF5-C-R
厂家：	Unisonic Technologies
描述：	PROGRAMMABLE PRECISION REFERENCE
文件：	总6页 (文件大小：286K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

TL431L

LINEAR INTEGRATED CIRCUIT

PROGRAMMABLE PRECISION

REFERENCE



DESCRIPTION

The UTC TL431L is a three-terminal adjustable regulator with a

guaranteed thermal stability over applicable temperature ranges.

The output voltage may be set to any value between V_REF

(approximately 2.5V) and 20V with two external resistors. It provides

very wide applications, including shunt regulator, series regulator,

switching regulator, voltage reference and others.



FEATURES

*Programmable Output Voltage to 20V.

*Low Dynamic Output Impedance 0.2.

*Sink Current Capability of 1.0 ~ 100mA.

*Equivalent full-Range Temperature Coefficient of 50ppm/ C Typical

for Operation over full Rated Operating Temperature Range.

 ORDERING INFORMATION

Ordering Number

Package

Pin Assignment

Packing

Lead Free

TL431LK-AB3-R

TL431LK-AE3-R

TL431LK-AF5-R

TL431LK-AF5-C-R

TL431LK-S08-R

TL431LK-S08-T

Halogen Free

TL431LG-AB3-R

TL431LG-AE3-R

TL431LG-AF5-R

TL431LG-AF5-C-R

TL431LG-S08-R

TL431LG-S08-T

TL431LG-SM1-R

TL431LG-SM1-T

TL431LG-T92-B

TL431LG-T92-K

TL431LG-T92-R

SOT-89

SOT-23

SOT-25

SOP-8

Tape Reel

Tube

SOP-8

TL431LK-SM1-R

TL431LK-SM1-T

TL431LK-T92-B

MSOP-8

TO-92

Tape Reel

Tube

Tape Box

Bulk

TL431LK-T92-K

TO-92

TL431LK-T92-R

Note: Pin Code: K: Cathode

TO-92

Tape Reel

A: Anode

R: Reference

X: No Connection

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TL431L

LINEAR INTEGRATED CIRCUIT



MARKING

PACKAGE

MARKING

PACKAGE

MARKING

SOP-8

MSOP-8

SOT-23

SOT-25

(Pin C)

SOT-25

SOT-89

TO-92



BLOCK DIAGRAM

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TL431L

LINEAR INTEGRATED CIRCUIT



ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)

PARAMETER

SYMBOL

V_KA

RATINGS

UNIT

Cathode Voltage

Cathode Current Range (Continuous)

Reference Input Current

Junction Temperature

I_KA

-100 ~ +150

-0.05 ~ +10

+150

C

I_REF

T_J

Operating Temperature

Storage Temperature

T_OPR

T_STG

-40 ~ +85

-65 ~ +150

C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

V_KA

MIN

V_REF

TYP

MAX

UNIT

Cathode Voltage

Cathode Current

I_KA

100



ELECTRICAL CHARACTERISTICS (T_A=25C, unless otherwise specified)

PARAMETER

SYMBOL

V_REF

TEST CONDITIONS

V_KA=V_REF, I_KA=10mA

MIN TYP MAX UNIT

Reference Input Voltage

2.450 2.50 2.550

Deviation of Reference Input Voltage

Over temperature (note 1)

_KA=V_REF, I_KA=10mA

V_REF/T

4.5

0≤T_A≤70

Ratio of Change in Reference Input

Voltage to the Change in Cathode

Voltage

V_KA=10V~V_REF

V_KA=20V~10V

-1.0

-2.7

V_REF/V_KAI_KA=10mA

mV/V

-0.5

1.5

-2.0

Reference Input Current

I_REF

I_KA=10mA, R1=10k, R2=

T_A=full Temperature

A

Deviation of Reference Input Current

Over Full Temperature Range

Minimum Cathode Current for Regulation

Off-State Cathode Current

I_REF/T

0.4

1.2

I_KA(MIN)

I_KA(OFF)

V_KA=V_REF

0.45

0.05

1.0

V_KA=20V, V_REF=0

A

_KA=V_REF, I_KA=1 ~ 100mA

Dynamic Impedance

Z_KA

0.15

0.5



f1.0kHz

Remark: Reference voltage of 1% tolerance is also available per customer’s request.

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TL431L

TEST CIRCUIT

LINEAR INTEGRATED CIRCUIT



APPLICATION CIRCUIT

VIN

VOUT

IOUT

VIN

IOUT

VOUT

RCL

UTC TL431L

RS=VREF/RCL

IOUT=VREF/RS

UTC TL431L

Constant-Current Sink

Current Limiting or Current Source

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TL431L

LINEAR INTEGRATED CIRCUIT



TYPICAL CHARACTERISTICS

Cathode Current vs. Cathode Voltage

800

T_A=25℃

VKA=VREF

T_A=25℃

VKA=VREF

125

100

600

400

IKA(min)

200

-25

-50

-75

-100

-200

-2

-1

-2

-1

Cathode Voltage (V)

Change in Reference Input Voltage vs.

Cathode voltage

Pulse Response

T_A=25℃

-5

-10

-15

-20

-25

-30

-35

-40

IKA=100mA

T_A=25℃

Cathode Voltage (V)

Time (μs)

Dynamic Impedance vs. Frequency

Small Signal Voltage Amplification vs. Frequency

10²

T_A=25℃

I^KA=0mA ~ 100mA

10¹

10⁰

T_A=25℃

IKA=10mA

10^-1

10³

-10

10⁴

10⁵

10⁶

10⁷

10³

10⁴

10⁵

10⁶

10⁷

Frequency (Hz)

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TL431L

LINEAR INTEGRATED CIRCUIT

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all UTC products described or contained herein.

UTC products are not designed for use in life support appliances, devices or systems where malfunction

of these products can be reasonably expected to result in personal injury. Reproduction in whole or in

part is prohibited without the prior written consent of the copyright owner. UTC reserves the right to

make changes to information published in this document, including without limitation specifications and

product descriptions, at any time and without notice. This document supersedes and replaces all

information supplied prior to the publication hereof.

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