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LM2670S-ADJ

更新时间： 2024-09-29 12:18:39

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
36页	1459K
描述
LM2670 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync

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LM2670S-ADJ 数据手册

LM2670

www.ti.com

SNVS036J –APRIL 2000–REVISED APRIL 2013

LM2670 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync

Check for Samples: LM2670

FEATURES

DESCRIPTION

The LM2670 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 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

components. The switching clock frequency can be

provided by an internal fixed frequency oscillator

(260KHz) or from an externally provided clock in the

range of 280 kHz to 400 kHz which allows the use of

physically smaller sized components. A family of

standard inductors for use with the LM2670 are

available from several manufacturers to greatly

simplify the design process. The external Sync clock

provides direct and precise control of the output ripple

frequency for consistent filtering or frequency

spectrum positioning.

•

Wide Input Voltage Range: 8V to 40V

External Sync Clock Capability (280kHz to

400kHz)

•

260 kHz Fixed Frequency Internal Oscillator

−40 to +125°C Operating Junction Temperature

Range

APPLICATIONS

•

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

Down Switching Regulators

The LM2670 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.

•

Efficient System Pre-Regulator for Linear

Voltage Regulators

•

Battery Chargers

Communications and Radio Equipment

Regulator with Synchronized Clock Frequency

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...36

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LM2670S-ADJ 替代型号

型号	品牌	替代类型	描述	数据表
LM2670S-ADJ/NOPB	TI	功能相似	具有同步的 SIMPLE SWITCHER 高效 3A 降压电压稳压器 \| KTW \| 7

与LM2670S-ADJ相关器件

型号	品牌	获取价格	描述	数据表
LM2670S-ADJ/NOPB	TI	获取价格	具有同步的 SIMPLE SWITCHER 高效 3A 降压电压稳压器 \| KTW \| 7
LM2670SD-12	NSC	获取价格	SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
LM2670SD-12	TI	获取价格	LM2670 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
LM2670SD-12/NOPB	TI	获取价格	具有同步的 SIMPLE SWITCHER 高效 3A 降压电压稳压器 \| NHM \| 1
LM2670SD-12EP	TI	获取价格	暂无描述
LM2670SD-12EP	NSC	获取价格	IC 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, LLP-14, Switchi
LM2670SD-3.3	NSC	获取价格	SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
LM2670SD-3.3	TI	获取价格	LM2670 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync
LM2670SD-3.3/NOPB	TI	获取价格	SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync 14-VSON -40 to 12
LM2670SD-5.0	NSC	获取价格	SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync

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