Datasheet > LM2676SX-5

LM2676SX-5

更新时间： 2024-11-16 12:18:39

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LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

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LM2676SX-5 数据手册

LM2676

www.ti.com

SNVS031J –APRIL 2000–REVISED APRIL 2013

LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Check for Samples: LM2676

FEATURES

DESCRIPTION

The LM2676 series of regulators are monolithic

integrated circuits which provide all of the active

functions for a step-down (buck) switching regulator

capable of driving up to 3A loads with excellent line

and load regulation characteristics. High efficiency

(>90%) is obtained through the use of a low ON-

resistance DMOS power switch. The series consists

of fixed output voltages of 3.3V, 5V and 12V and an

adjustable output version.

•

Efficiency Up to 94%

•

Simple and Easy to Design with (Using Off-

The-Shelf External Components)

•

150 mΩ DMOS Output Switch

3.3V, 5V and 12V Fixed Output and Adjustable

(1.2V to 37V) Versions

•

50μA Standby Current When Switched OFF

±2% Maximum Output Tolerance Over Full

Line and Load Conditions

The SIMPLE SWITCHER concept provides for a

complete design using a minimum number of external

•

Wide Input Voltage Range: 8V to 40V

components.

high fixed frequency oscillator

(260KHz) allows the use of physically smaller sized

components. A family of standard inductors for use

with the LM2676 are available from several

manufacturers to greatly simplify the design process.

260 KHz Fixed Frequency Internal Oscillator

−40 to +125°C Operating Junction Temperature

Range

The LM2676 series also has built in thermal

shutdown, current limiting and an ON/OFF control

input that can power down the regulator to a low

50μA quiescent current standby condition. The output

voltage is ensured to a ±2% tolerance. The clock

frequency is controlled to within a ±11% tolerance.

APPLICATIONS

•

Simple to Design, High Efficiency (>90%) Step-

Down Switching Regulators

Efficient System Pre-Regulator for Linear

Voltage Regulators

Battery Chargers

Typical Application

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.

SIMPLE SWITCHER, Switchers Made Simple are registered trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...35

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与LM2676SX-5相关器件

型号	品牌	获取价格	描述	数据表
LM2676SX-5.0	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676SX-5.0/NOPB	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676SX-ADJ	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676SX-ADJ/NOPB	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676SX-ADJEP	TI	获取价格	IC SWITCHING REGULATOR, Switching Regulator or Controller
LM2676T-12	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676T-12	NSC	获取价格	SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676T-12/NOPB	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676T-3.3	TI	获取价格	LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
LM2676T-3.3	NSC	获取价格	SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

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