Datasheet > LT6109

LT6109

更新时间： 2023-12-20 18:46:02

品牌	Logo	应用领域
亚德诺 - ADI		放大器比较器
页数	文件大小	规格书
28页	318K
描述
具基准和比较器的高端电流检测放大器

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LT6109 数据手册

LT6109-1/LT6109-2

High Side Current Sense

Ampliﬁer with Reference

and Comparators

FEATURES

DESCRIPTION

The LT^®6109 is a complete high side current sense device

that incorporates a precision current sense ampliﬁer, an

integrated voltage reference and two comparators. Two

versions of the LT6109 are available. The LT6109-1 has

the comparators connected in opposing polarity and the

LT6109-2hasthecomparatorsconnectedinthesamepolar-

ity.Inaddition,thecurrentsenseampliﬁerandcomparator

inputs and outputs are directly accessible. The ampliﬁer

gainandcomparatortrippointsareconﬁguredbyexternal

resistors. The open-drain comparator outputs allows for

easy interface to other system components.

Current Sense Ampliﬁer

– Fast Step Response: 500ns

– Low Offset Voltage: 125µV Maximum

– Low Gain Error: 0.2% Maximum

Internal 400mV Precision Reference

Internal Latching Comparators with Reset

– Fast Response Time: 500ns

– Total Threshold Error: 1.25% Maximum

– Two Comparator Polarity Options

Wide Supply Range: 2.7V to 60V

Supply Current: 550µA

Low Shutdown Current: 5µA Maximum

Speciﬁed for –40°C to 125°C Temperature Range

Available in 10-Lead MSOP Package

The overall propagation delay of the LT6109 is typically

only 1.4µs, allowing for quick reaction to overcurrent

and undercurrent conditions. The 1MHz bandwidth al-

lows the LT6109 to be used for error detection in critical

applications such as motor control. The high threshold

accuracy of the comparators, combined with the ability to

latch both comparators, ensures the LT6109 can capture

high speed events.

APPLICATIONS

Overcurrent, Undercurrent and Fault Detection

Current Shunt Measurement

Battery Monitoring

Motor Control

Automotive Monitoring and Control

Remote Sensing

Industrial Control

The LT6109 is fully speciﬁed for operation from –40°C to

125°C,makingitsuitableforindustrialandautomotiveap-

plications.TheLT6109isavailableinasmall10-leadMSOP.

L, LT, LTC, LTM, TimerBlox, Linear Technology and the Linear logo are registered trademarks

of Linear Technology Corporation. All other trademarks are the property of their respective

owners.

TYPICAL APPLICATION

Circuit Fault Protection with Latching Load Disconnect and Early Warning Indication

Response to Overcurrent Event

0.1Ω

IRF9640

12V

TO LOAD

LOAD

0.1µF

6.2V*

10V/DIV

100Ω

3.3V

SENSEHI SENSELO

OUTA

OUT

10k 1.62k 100k

LOAD

LT6109-2

6.04k

2.37k

200mA/DIV

0mA

RESET

EN/RST

INC2

OUTC1

5V/DIV

100mA WARNING

250mA DISCONNECT

100mA WARNING

OUTC2

OUTC1

250mA DISCONNECT

OUTC2

5V/DIV

2N2700

INC1

–

1.6k

610912 TA01a

610912 TA01b

5µs/DIV

*CMH25234B

610912fa

12 3 4 5 6 7...28

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与LT6109相关器件

型号	品牌	描述	获取价格	数据表
LT6109-1_15	Linear	High Side Current Sense Amplifier with Reference and Comparators	获取价格
LT6109-2_15	Linear	High Side Current Sense Amplifier with Reference and Comparators	获取价格
LT6109AHMS-1#TRPBF	Linear	LT6109 - High Side Current Sense Amplifier with Reference and Comparators; Package: MSOP;	获取价格
LT6109AHMS-2#PBF	Linear	LT6109 - High Side Current Sense Amplifier with Reference and Comparators; Package: MSOP;	获取价格
LT6109AHMS-2#TRPBF	Linear	LT6109 - High Side Current Sense Amplifier with Reference and Comparators; Package: MSOP;	获取价格
LT6109AIMS-1#PBF	Linear	LT6109 - High Side Current Sense Amplifier with Reference and Comparators; Package: MSOP;	获取价格

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