전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LM2598

활성

4.5V~40V, 1A SIMPLE SWITCHER® 벅 컨버터

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LMR54410 활성 80µA IQ를 지원하는 SIMPLE SWITCHER® 전원 컨버터 4.5V~36V, 1A, 동기 벅 Next-generation with lower IQ.
TPSM33615 활성 3V~36V 입력, 1V~15V 출력, 1.5A 동기식 벅 전원 모듈 Next-generation power module with spread spectrum and frequency synchronization.

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 40 Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Features Over Current Protection, Power good Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 37 Iq (typ) (µA) 5000 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 40 Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Features Over Current Protection, Power good Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 37 Iq (typ) (µA) 5000 Duty cycle (max) (%) 100
TO-220 (NDZ) 7 82.6008 mm² 10.16 x 8.13 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24
  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range, 1.2-V
    to 37-V ±4% Max Over Line and Load Conditions
  • 1-A Output Current
  • Available in 7-Pin TO-220 and DDPAK (Surface
    Mount) Package
  • Input Voltage Range Up to 40 V
  • Excellent Line and Load Regulation Specifications
  • 150 kHz Fixed Frequency Internal Oscillator
  • Shutdown/Soft-start
  • Out of Regulation Error Flag
  • Error Output Delay
  • Low Power Standby Mode, IQ, Typically 85 µA
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection
  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range, 1.2-V
    to 37-V ±4% Max Over Line and Load Conditions
  • 1-A Output Current
  • Available in 7-Pin TO-220 and DDPAK (Surface
    Mount) Package
  • Input Voltage Range Up to 40 V
  • Excellent Line and Load Regulation Specifications
  • 150 kHz Fixed Frequency Internal Oscillator
  • Shutdown/Soft-start
  • Out of Regulation Error Flag
  • Error Output Delay
  • Low Power Standby Mode, IQ, Typically 85 µA
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection

The LM2598 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

The LM2598 is a member of the LM259x family.

Requiring a 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.

The LM2598 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower-frequency switching regulators. Available in a standard 7-lead TO-220 package with several different lead bend options, and a 7-lead DDPAK surface mount package. Typically, for output voltages less than 12 V, and ambient temperatures less than 50°C, no heat sink is required.

A standard series of inductors (both through hole and surface mount types) are available from several different manufacturers optimized for use with the LM2598. This feature greatly simplifies the design of switch-mode power supplies.

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 overtemperature shutdown for complete protection under fault conditions.

The LM2598 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

The LM2598 is a member of the LM259x family.

Requiring a 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.

The LM2598 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower-frequency switching regulators. Available in a standard 7-lead TO-220 package with several different lead bend options, and a 7-lead DDPAK surface mount package. Typically, for output voltages less than 12 V, and ambient temperatures less than 50°C, no heat sink is required.

A standard series of inductors (both through hole and surface mount types) are available from several different manufacturers optimized for use with the LM2598. This feature greatly simplifies the design of switch-mode power supplies.

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 overtemperature shutdown for complete protection under fault conditions.

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기술 자료

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20개 모두 보기
유형 직함 날짜
* Data sheet LM2598 SIMPLE SWITCHER® Power Converter 150-kHz 1-A Step-Down Voltage Regulator, With Features datasheet (Rev. D) PDF | HTML 2016/05/31
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/03/25
Technical article How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016/06/13
Technical article The importance of accurate switching frequency and current limit when selecting bu PDF | HTML 2016/04/19
Technical article Advantages of leaded packages in robust industrial designs PDF | HTML 2016/03/08
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014/09/12
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/04/24
Application note AN-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B) 2013/04/23
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013/04/23
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013/04/23
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013/04/23
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013/04/23
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013/04/23
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013/04/23
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013/04/23
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/04/23
Application note Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 2007/03/21
Application note Input and Output Capacitor Selection 2005/09/19
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005/07/12
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004/05/03

설계 및 개발

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시뮬레이션 모델

LM2598_ADJ PSpice Transient Model

SNVMAE1.ZIP (101 KB) - PSpice Model
시뮬레이션 모델

LM2598_ADJ Unencrypted PSpice Transient Model

SNVMAE2.ZIP (3 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
TO-220 (NDZ) 7 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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