LL431G-AF5-R [UTC]

PROGRAMMABLE PRECISION REFERENCE; 可编程精密基准


型号：	LL431G-AF5-R
厂家：	Unisonic Technologies
描述：	PROGRAMMABLE PRECISION REFERENCE 可编程精密基准
文件：	总5页 (文件大小：216K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

LL431

LINEAR INTEGRATED CIRCUIT

PROGRAMMABLE PRECISION

REFERENCE

SOT-23

DESCRIPTION

The UTC LL431 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 36 V with two external resistors. It

can be used in provides very wide applications including shunt

regulator, series regulator, switching regulator, voltage reference

and others.

SOT-25

SOT-89

FEATURES

*Programmable output Voltage to 36V.

*Low dynamic output impedance 0.2Ω.

*Sink current capability of 1.0 to 100mA.

SOP-8

TO-92

*Equivalent full-range temperature coefficient of 50ppm/ °C

typical for operation over full rated operating temperature range.

ORDERING INFORMATION

Ordering Number

Pin Assignment

Package

Packing

Lead Free

LL431K-AB3-R

LL431K-AE3-R

LL431NSL-AE3-R

LL431K-AF5-R

LL431K-S08-R

LL431K-T92-B

LL431K-T92-K

LL431K-T92-R

Halogen Free

LL431G-AB3-R

LL431G-AE3-R

LL431NSG-AE3-R

LL431G-AF5-R

LL431G-S08-R

LL431G-T92-B

LL431G-T92-K

LL431G-T92-R

SOT-89

SOT-23

SOT-25

SOP-8

Tape Reel

Tape Box

Bulk

TO-92

Tape Reel

Note: Pin Code: K: Cathode

A: Anode

R: Reference

X: No Connection

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LL431

LINEAR INTEGRATED CIRCUIT

MARKING

PACKAGE

MARKING

SOT-23

(LL431NS)

LL431

SOT-25

G: Halogen Free

K: Lead Free

BLOCK DIAGRAM

CATHODE

REFERENCE

CATHODE (K)

REFERENCE (R)

2.5V VREF

ANODE(A)

ANODE

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LL431

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

SOT-89

I_KA

-100 ~ +150

-0.05 ~ +10

500

°C

I_REF

SOT-23/ SOT-25

300

Power Dissipation

P_D

SOP-8

TO-92

600

770

Junction Temperature

Operating Temperature

Storage Temperature

T_J

+150

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

RATINGS

_REF~ 36

1 ~ 100

UNIT

Cathode Voltage

Cathode Current

I_KA

ELECTRICAL CHARACTERISTICS (T_C= 25℃, unless otherwise specified.)

PARAMETER

Reference Input Voltage

SYMBOL

V_REF

TEST CONDITIONS

V_KA=V_REF,I_KA=10mA

_KA=V_REF,I_KA=10mA

0°C≦T_A≦70°C

MIN TYP MAX UNIT

±0.5% 2.483 2.495 2.507

Deviation of reference Input Voltage

Over temperature

ΔV_REF/ΔT

4.5 17

ΔV_KA=10V~V_REF

ΔV_KA=36V~10V

I_KA=10mA, R1=10kΩ, R2=∞

_KA=10mA, R1=10kΩ, R2=∞

T_A=full Temperature

-1.0 -2.7

-0.5 -2.0

Ratio of Change in Reference Input

Voltage to the Change in Cathode Voltage

Reference Input Current

ΔV_REF/ΔV_KAI_KA=10mA

mV/V

μA

I_REF

1.5

Deviation of Reference Input Current Over

Full Temperature Range

ΔI_REF/ΔT

0.4

1.2

μA

Minimum Cathode Current for Regulation

Off-State Cathode Current

I_KA(MIN)V_KA=V_REF

0.15

1.0

I_KA(OFF)V_KA=36V, V_REF=0

0.05

0.15

μA

_KA=V_REF, I_KA=1 to 100mA

Dynamic Impedance

Z_KA

0.5

f≤1.0kHz

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LL431

LINEAR INTEGRATED CIRCUIT

TEST CIRCUIT

For V_KA=V_REF

For V_KA≧V_REF

For I_KA(OFF)

APPLICATION CIRCUIT

VIN

VoUT

VIN

VoUT

OUT

UTC7805

COMMON

R₁

VREF

R₂

VREF

R₂

UTC LL431

V_OUT=(1+R₁/R₂)*V_REF

Shutdown Regulator

Output Control of a Three

-Terminal Fixed Regulator

Higher-current Shunt Regulator

Constant-current Sink

Current Limiting or Current Source

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LL431

LINEAR INTEGRATED CIRCUIT

■ TYPICAL CHARACTERISTICS

Cathode Current vs. Cathode Voltage

150

Cathode Current vs. Cathode Voltage

800

125

100

T_A=25°C

V_KA=V_REF

T_A=25°C

V_KA=V_REF

600

400

200

I_KA(MIN)

-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°C

-5

I_KA=100mA

T_A=25°C

-10

-15

-20

-25

-30

-35

-40

-50

-1

Time (μs)

Cathode Voltage (V)

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. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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LL431G-AF5-R [UTC]

相关型号：

LL431G-S08-R

LL431G-T92-B

LL431G-T92-K

LL431G-T92-R

LL431K-AB3-R

LL431K-AE2-R

LL431K-AE3-R

LL431K-AF5-R

LL431K-S08-R

LL431K-T92-B

LL431K-T92-K

LL431K-T92-R