LTC1157CS8#TRPBF

更新时间： 2024-09-25 13:09:43

品牌	Logo	应用领域
凌特 - Linear		驱动器接口集成电路光电二极管
页数	文件大小	规格书
8页	223K
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LTC1157CS8#TRPBF 数据手册

LTC1157

3.3V Dual Micropower

High-Side/Low-Side MOSFET Driver

DESCRIPTIO

EATURE

■

Allows Lowest Drop 3.3V Supply Switching

Operates on 3.3V or 5V Nominal Supplies

3 Microamps Standby Current

The LTC1157 dual 3.3V micropower MOSFET gate driver

makes it possible to switch either supply or ground

reference loads through a low R_DS(ON)N-channel switch

(N-channel switches are required at 3.3V because P-

channel MOSFETs do not have guaranteed R_DS(ON)with

80 Microamps ON Current

Drives Low Cost N-Channel Power MOSFETs

No External Charge Pump Components

Controlled Switching ON and OFF Times

Compatible with 3.3V and 5V Logic Families

Available in 8-Pin SOIC

_GS≤ 3.3V). The LTC1157 internal charge pump boosts

the gate drive voltage 5.4V above the positive rail (8.7V

above ground), fully enhancing a logic level N-channel

switch for 3.3V high-side applications and a standard N-

channel switch for 3.3V low-side applications. The gate

drive voltage at 5V is typically 8.8V above supply (13.8V

above ground), so standard N-channel MOSFET switches

can be used for both high-side and low-side applications.

O U

PPLICATI

■

Notebook Computer Power Management

Palmtop Computer Power Management

P-Channel Switch Replacement

Battery Charging and Management

Mixed 5V and 3.3V Supply Switching

Stepper Motor and DC Motor Control

Cellular Telephones and Beepers

Micropower operation, with 3µA standby current and

80µA operating current, makes the LTC1157 well suited

for battery-powered applications.

The LTC1157 is available in both 8-pin DIP and SOIC.

TYPICAL APPLICATI

Ultra Low Voltage Drop 3.3V Dual High-Side Switch

Gate Voltage Above Supply

3.3V

10µF

(8.7V)

IN1

IN2

IRLR024

3.3V

LOGIC

LTC1157

GND

3.3V

LOAD

IRLR024

3.3V

LOAD

LTC1157 • TA01

5.0 5.5

2.0 2.5 3.0 3.5 4.0 4.5

SUPPLY VOLTAGE (V)

6.0

LTC1157 • TA02

12 3 4 5 6 7 8

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LTC1157CS8#TRPBF 替代型号

型号	品牌	替代类型	描述	数据表
LTC1157CS8#PBF	Linear	完全替代	LTC1157 - 3.3V Dual Micropower High-Side/Low-Side MOSFET Driver; Package: SO; Pins: 8; Tem

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