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LM2676SX-ADJ 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DC/DC转换器
封装:
TO-263-8
描述:
3A,可调输出的降压电压稳压器
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
典型应用电路图在P1
原理图在P8
封装尺寸在P26P27P29P30P31
标记信息在P26P27P28
封装信息在P26P27P28P29P30P31
技术参数、封装参数在P2P3P4
应用领域在P1P10P23P24P35
电气规格在P2P3P4P5P6P7
型号编号列表在P17
导航目录
LM2676SX-ADJ数据手册
Page:
of 35 Go
若手册格式错乱，请下载阅览PDF原文件
LM2676
www.ti.com
SNVS031J –APRIL 2000–REVISED APRIL 2013
LM2676 SIMPLE SWITCHER
®
High Efficiency 3A Step-Down Voltage Regulator
Check for Samples: LM2676
1
FEATURES
DESCRIPTION
The LM2676 series of regulators are monolithic
2
• Efficiency Up to 94%
integrated circuits which provide all of the active
• Simple and Easy to Design with (Using Off-
functions for a step-down (buck) switching regulator
The-Shelf External Components)
capable of driving up to 3A loads with excellent line
• 150 mΩ DMOS Output Switch
and load regulation characteristics. High efficiency
(>90%) is obtained through the use of a low ON-
• 3.3V, 5V and 12V Fixed Output and Adjustable
resistance DMOS power switch. The series consists
(1.2V to 37V) Versions
of fixed output voltages of 3.3V, 5V and 12V and an
• 50μA Standby Current When Switched OFF
adjustable output version.
• ±2% Maximum Output Tolerance Over Full
The SIMPLE SWITCHER concept provides for a
Line and Load Conditions
complete design using a minimum number of external
• Wide Input Voltage Range: 8V to 40V
components. A high fixed frequency oscillator
(260KHz) allows the use of physically smaller sized
• 260 KHz Fixed Frequency Internal Oscillator
components. A family of standard inductors for use
• −40 to +125°C Operating Junction Temperature
with the LM2676 are available from several
Range
manufacturers to greatly simplify the design process.
The LM2676 series also has built in thermal
APPLICATIONS
shutdown, current limiting and an ON/OFF control
• Simple to Design, High Efficiency (>90%) Step-
input that can power down the regulator to a low
Down Switching Regulators
50μA quiescent current standby condition. The output
voltage is ensured to a ±2% tolerance. The clock
• Efficient System Pre-Regulator for Linear
frequency is controlled to within a ±11% tolerance.
Voltage Regulators
• Battery Chargers
Typical Application
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2SIMPLE SWITCHER, Switchers Made Simple are registered trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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