Datasheet > LM56_06

LM56_06

更新时间： 2024-11-09 04:20:07

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美国国家半导体 - NSC		/
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描述
Dual Output Low Power Thermostat

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LM56_06 数据手册

January 2006

LM56

Dual Output Low Power Thermostat

General Description

Features

n Digital outputs support TTL logic levels

n Internal temperature sensor

n 2 internal comparators with hysteresis

n Internal voltage reference

The LM56 is a precision low power thermostat. Two stable

temperature trip points (V_T1and V_T2) are generated by

dividing down the LM56 1.250V bandgap voltage reference

using 3 external resistors. The LM56 has two digital outputs.

OUT1 goes LOW when the temperature exceeds T1 and

goes HIGH when the the temperature goes below

(T1–T_HYST). Similarly, OUT2 goes LOW when the tempera-

ture exceeds T2 and goes HIGH when the temperature goes

below (T2–T_HYST). T_HYSTis an internally set 5˚C typical

hysteresis.

n Available in 8-pin SO and Mini-SO8 plastic packages

Key Specifications

Power Supply Voltage

Power Supply Current

V_REF

2.7V–10V

230 µA (max)

1.250V 1% (max)

5˚C

The LM56 is available in an 8-lead Mini-SO8 surface mount

package and an 8-lead small outline package.

Hysteresis Temperature

Applications

Internal Temperature Sensor Output Voltage:

(+6.20 mV/˚C x T) + 395 mV

n Microprocessor Thermal Management

n Appliances

n Temperature Trip Point Accuracy:

n Portable Battery Powered 3.0V or 5V Systems

n Fan Control

n Industrial Process Control

n HVAC Systems

n Remote Temperature Sensing

n Electronic System Protection

LM56BIM

LM56CIM

3˚C (max)

4˚C (max)

+25˚C

2˚C (max)

3˚C (max)

+25˚C to +85˚C

−40˚C to +125˚C

Simplified Block Diagram and Connection Diagram

01289302

01289301

Order

Number

LM56BIM LM56BIMX LM56CIM LM56CIMX LM56BIMM LM56BIMMX LM56CIMM LM56CIMMX

NS Package

Number

M08A

SOP-8

M08A

MUA08A

MSOP-8

MUA08A

MSOP-8

MUA08A

MSOP-8

MUA08A

MSOP-8

SOP-8

2500 Units

Tape &

Reel

2500 Units 1000 Units

3500 Units

1000 Units

3500 Units

Transport

Media

Rail

Tape &

Reel

Tape & Reel Tape & Reel Tape & Reel Tape & Reel

Package

Marking

LM56BIM LM56BIM LM56CIM LM56CIM

T02B

T02C

DS012893

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