LM2597HV

更新时间： 2024-09-09 12:05:51

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
48页	2271K
描述
LM2597/LM2597HV SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down

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LM2597HV 数据手册

LM2597, LM2597HV

www.ti.com

SNVS119C –MARCH 1998–REVISED APRIL 2013

LM2597/LM2597HV SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down

Voltage Regulator, with Features

Check for Samples: LM2597, LM2597HV

FEATURES

DESCRIPTION

The LM2597/LM2597HV series of regulators are

monolithic integrated circuits that provide all the

active functions for a step-down (buck) switching

•

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

•

Adjustable Version Output Voltage Range,

1.2V to 37V (57V for HV Version)±4% Max Over

Line and Load Conditions

regulator, capable of driving

a 0.5A load with

excellent line and load regulation. These devices are

available in fixed output voltages of 3.3V, 5V, 12V,

and an adjustable output version, and are packaged

in an 8-lead PDIP and an 8-lead surface mount

package.

•

Specified 0.5A Output Current

Available in 8-pin Surface Mount and PDIP-8

Package

•

Input Voltage Range Up to 60V

150 kHz Fixed Frequency Internal Oscillator

Shutdown /Soft-start

This series of switching regulators is similar to the

LM2594 series, with additional supervisory and

performance features added.

Out of Regulation Error Flag

Error Output Delay

Requiring

minimum number of external

components, these regulators are simple to use and

include internal frequency compensation†, improved

line and load specifications, fixed-frequency oscillator,

Shutdown /Soft-start, error flag delay and error flag

output.

Bias Supply Pin (V_BS) for Internal Circuitry

Improves Efficiency at High Input Voltages

•

Low Power Standby Mode, I_QTypically 85 μA

High Efficiency

The LM2597/LM2597HV series operates at

Uses Readily Available Standard Inductors

switching frequency of 150 kHz thus allowing smaller

sized filter components than what would be needed

with lower frequency switching regulators. Because of

its high efficiency, the copper traces on the printed

circuit board are normally the only heat sinking

needed.

Thermal Shutdown and Current Limit

Protection

APPLICATIONS

•

Simple High-efficiency Step-down (Buck)

Regulator

A standard series of inductors (both through hole and

surface mount types) are available from several

different manufacturers optimized for use with the

LM2597/LM2597HV series. This feature greatly

simplifies the design of switch-mode power supplies.

•

Efficient Pre-regulator for Linear Regulators

On-card Switching Regulators

Positive to Negative Converter

Other features include a specified ±4% tolerance on

output voltage under all conditions of input voltage

and output load conditions, and ±15% on the

oscillator frequency. External shutdown is included,

featuring typically 85 μA standby current. Self

protection features include a two stage current limit

for the output switch and an over temperature

shutdown for complete protection under fault

conditions.

The LM2597HV is for use in applications requiring

and input voltage up to 60V.

†Patent Number 5,382,918.

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.

All other trademarks are the property of their respective owners.

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...48

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与LM2597HV相关器件

型号	品牌	获取价格	描述	数据表
LM2597HV-12	ETC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897
LM2597HV-3.3	ETC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897
LM2597HV3.3MDC	NSC	获取价格	1.4A SWITCHING REGULATOR, 173kHz SWITCHING FREQ-MAX, UUC, DIE
LM2597HV3.3MWC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator
LM2597HV-5.0	ETC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897
LM2597HV-5MDC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, DIE, Switching Regulator or
LM2597HV-5MWC	NSC	获取价格	IC 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator
LM2597HVM-12	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVM-12	TI	获取价格	LM2597/LM2597HV SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator,
LM2597HVM-12/NOPB	TI	获取价格	LM2597/LM2597HV SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator

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