Datasheet > LM22675_15

LM22675_15

更新时间： 2024-11-10 00:53:51

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德州仪器 - TI		/
页数	文件大小	规格书
26页	1307K
描述
LM22675/-Q1 42 V, 1 A SIMPLE SWITCHERÂ® Step-Down Voltage Regulator with Features

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LM22675, LM22675-Q1

SNVS591L –SEPTEMBER 2008–REVISED NOVEMBER 2014

LM22675/-Q1 42 V, 1 A SIMPLE SWITCHER Step-Down Voltage Regulator

with Features

1 Features

3 Description

The LM22675 switching regulator provides all of the

functions necessary to implement an efficient high

voltage step-down (buck) regulator using a minimum

of external components. This easy to use regulator

incorporates a 42 V N-channel MOSFET switch

capable of providing up to 1 A of load current.

Excellent line and load regulation along with high

efficiency (> 90%) are featured. Voltage mode control

offers short minimum on-time, allowing the widest

ratio between input and output voltages. Internal loop

compensation means that the user is free from the

tedious task of calculating the loop compensation

components. Fixed 5 V output and adjustable output

voltage options are available. A switching frequency

of 500 kHz allows for small external components and

good transient response. A precision enable input

allows simplification of regulator control and system

power sequencing. In shutdown mode the regulator

draws only 25 µA (typ). Built in soft-start (500 µs, typ)

saves external components. The LM22675 also has

built in thermal shutdown, and current limiting to

protect against accidental overloads.

•

Wide Input Voltage Range: 4.5 V to 42 V

Internally Compensated Voltage Mode Control

Stable with Low ESR Ceramic Capacitors

200 mΩ N-Channel MOSFET

•

Output Voltage Options:

-ADJ (Outputs as Low as 1.285 V)

-5.0 (Output Fixed to 5 V)

•

±1.5% Feedback Reference Accuracy

Switching Frequency of 500 kHz

–40°C to 125°C Operating Junction Temperature

Range

•

Precision Enable Pin

Integrated Boot-Strap Diode

Integrated Soft-Start

Fully WEBENCH^®Enabled

Step-Down and Inverting Buck-Boost Applications

LM22675Q is an Automotive Grade Product

that is AEC-Q100 Grade 1 Qualified (–40°C to

+125°C Operating Junction Temperature)

The LM22675 is a member of Texas Instruments'

SIMPLE

SWITCHER^®

family.

The

SIMPLE

•

SO PowerPAD-8 (Exposed Pad) Package

SWITCHER concept provides for an easy to use

complete design using a minimum number of external

components and the TI WEBENCH design tool. TI's

WEBENCH tool includes features such as external

component calculation, electrical simulation, thermal

simulation, and Build-It boards for easy design-in.

2 Applications

•

Industrial Control

Telecom and Datacom Systems

Embedded Systems

Device Information⁽¹⁾

Conversions from Standard 24 V, 12 V and 5 V

Input Rails

PART NUMBER

LM22675

PACKAGE

BODY SIZE (NOM)

HSOP (8)

4.89 mm x 3.90 mm

LM22675-Q1

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Application Schematic

VIN

BOOT

LM22675-ADJ

VOUT

GND

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...26

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与LM22675_15相关器件

型号	品牌	获取价格	描述	数据表
LM22675MR-5.0	TI	获取价格	LM22675/LM22675Q 42V, 1A SIMPLE SWITCHER Step-Down Voltage Regulator with
LM22675MR-5.0	NSC	获取价格	1A SIMPLE SWITCHER®, Step-Down Voltage Regula
LM22675MR-5.0/NOPB	TI	获取价格	LM22675/-Q1 42 V, 1 A SIMPLE SWITCHERÂ® Step-
LM22675MR-ADJ	TI	获取价格	LM22675/LM22675Q 42V, 1A SIMPLE SWITCHER Step-Down Voltage Regulator with
LM22675MR-ADJ	NSC	获取价格	1A SIMPLE SWITCHER®, Step-Down Voltage Regula
LM22675MR-ADJ/NOPB	TI	获取价格	LM22675/-Q1 42 V, 1 A SIMPLE SWITCHERÂ® Step-
LM22675MRE-5.0	NSC	获取价格	1A SIMPLE SWITCHER®, Step-Down Voltage Regula
LM22675MRE-5.0	TI	获取价格	LM22675/LM22675Q 42V, 1A SIMPLE SWITCHER Step-Down Voltage Regulator with
LM22675MRE-5.0/NOPB	TI	获取价格	4.5V to 42V, 1A SIMPLE SWITCHER® buck converter with precision enable 8-SO PowerPA
LM22675MRE-ADJ	TI	获取价格	LM22675/LM22675Q 42V, 1A SIMPLE SWITCHER Step-Down Voltage Regulator with

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