EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC1157

Description
3.3V Dual Micropower High-Side/Low-Side MOSFET Driver
File Size184KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Compare View All

LTC1157 Overview

3.3V Dual Micropower High-Side/Low-Side MOSFET Driver

LTC1157
3.3V Dual Micropower
High-Side/Low-Side MOSFET Driver
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Allows Lowest Drop 3.3V Supply Switching
Operates on 3.3V or 5V Nominal Supplies
3 Microamps Standby Current
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
APPLICATI
s
s
s
s
s
s
s
S
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
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
V
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.
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
12
3.3V
GATE VOLTAGE – SUPPLY VOLTAGE (V)
+
10µF
10
8
6
4
2
0
2.0 2.5
V
S
3.3V
LOGIC
IN1
LTC1157
IN2
GND
G2
G1
(8.7V)
(8.7V)
IRLR024
IRLR024
3.3V
LOAD
3.3V
LOAD
LTC1157 • TA01
U
Gate Voltage Above Supply
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
6.0
LTC1157 • TA02
UO
UO
1

LTC1157 Related Products

LTC1157 LTC1157CS8 LTC1157CN8 LTC1157C
Description 3.3V Dual Micropower High-Side/Low-Side MOSFET Driver 3.3V Dual Micropower High-Side/Low-Side MOSFET Driver 3.3V Dual Micropower High-Side/Low-Side MOSFET Driver 3.3V Dual Micropower High-Side/Low-Side MOSFET Driver
Smart Call Center
Intelligent Call Center 1. System Overview:   Intelligent Call Center (Call Center), also known as "Customer Service Center", uses telephone as access means, integrates computer technology and telecom...
rain MCU
ADC0808 analog conversion
ADC0808 analog conversion simulation...
yangkang MCU
Electromagnetism and quantum mechanics
Due to professional requirements, I am studying quantum mechanics and electromagnetism (electromagnetic field and electromagnetic wave). Some people say that to study quantum mechanics, you must first...
hellomankind maychang Fun Electronics
Useful tool kit
A relatively useful tool, students participating in the competition can take a look...
喜太郎与灰羊羊 Electronics Design Contest
Help~~~~~~~How to implement a simple browser in pocket pc
How to implement a simple browser in pocket pc...
shaohengwei Embedded System
Keithley and Keysight 7.5-digit multimeter specifications and performance evaluation
Last time, we talked about the appearance comparison. I don't know which one you like better. There is no unified standard for aesthetics. For engineers, the main thing is to look at the price-perform...
eenuts Test/Measurement

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 538  2662  1504  309  1689  11  54  31  7  35 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号