LT1161ISWPBF

更新时间： 2024-11-13 13:09:31

品牌	Logo	应用领域
凌特 - Linear		驱动器
页数	文件大小	规格书
12页	291K
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LT1161ISWPBF 数据手册

LT1161

Quad Protected High-Side

MOSFET Driver

FEATURES

DESCRIPTION

■

Fully Enhances N-Channel MOSFET Switches

The LT1161 is a quad high-side gate driver allowing the

use of low cost N-channel power MOSFETs for high-side

switching applications. It has four independent switch

channels, each containing a completely self-contained

charge pump to fully enhance an N-channel MOSFET

switch with no external components.

■

8V to 48V Power Supply Range

■

Protected from –15V to 60V Supply Transients

■

Individual Short-Circuit Protection

■

Individual Automatic Restart Timers

Programmable Current Limit, Delay Time, and

Auto-Restart Period

Voltage-Limited Gate Drive

Defaults to OFF State with Open Input

Flowthrough Input to Output Pinout

■

Also included in each switch channel is a drain sense

comparator that is used to sense switch current. When a

preset current level is exceeded, the switch is turned off.

The switch remains off for a period of time set by an

external timing capacitor and then automatically attempts

to restart. If the fault is still present, this cycle repeats until

the fault is removed, thus protecting the MOSFET.

■

Available in 20-Lead DIP or SOL Package

APPLICATIONS

■

The LT1161 has been specifically designed for harsh

operating environments such as industrial, avionics, and

automotive applications where poor supply regulation

and/or transients may be present. The device will not

sustain damage from supply voltages of –15V to 60V.

Industrial Control

Avionics Systems

Automotive Switches

Stepper Motor and DC Motor Control

Electronic Circuit Breaker

■

TYPICAL APPLICATION

24V

Switch Drop vs Load Current

50µF

50V

0.50

0.45

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0.1µF

0.01Ω

DS1

IRFZ34

LOAD

0.01Ω

DS2

IRFZ34

0.1µF

LT1161

LOAD

0.01Ω

DS3

IN1

IN2

IN3

IN4

INPUTS

IRFZ34

LOAD

DS4

0.01Ω

GND

IRFZ34

LOAD

LOAD CURRENT (A)

1161 TA01

1161 F01

Figure 1. Protected Quad High-Side Switch

12 3 4 5 6 7...12

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