홈 전력 관리 DC/DC 스위칭 레귤레이터 DC/DC 컨버터
홈
전력 관리
DC/DC 스위칭 레귤레이터
DC/DC 컨버터

LM2671

활성

8V~40V, 500mA SIMPLE SWITCHER ® 벅 컨버터(외부 부품 5개 포함)

지금 주문하기
데이터 시트

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.
TLVM13620 활성 4mm x 6mm x 1.8mm 패키지에 들어 있는 3.6V~36V 입력, 1V~6V 출력, 2A 스텝다운 모듈 Save board space, simplify design and speed time to market with an integrated-inductor power module.
LMR54406 활성 4V~36V, 0.6A, 80µA IQ 동기 벅 SIMPLE SWITCHER® 전력 컨버터 Newer converter with better feature set
LMZM23600 활성 3.8mm × 3mm 패키지의 36V, 0.5A 스텝다운 DC/DC 전원 모듈 Smaller solution size module
LMQ66430 활성 3.5µA IQ를 지원하는 36V, 1A 저 EMI 동기 스텝다운 컨버터 Converter with low IQ and smaller in size
TPSM365R6 활성 3V~65V 입력, 1V~13V 출력, 0.6A 동기식 벅 컨버터 전원 모듈 Smaller design with an integrated-inductor power module.

LM2671

활성
데이터 시트 지금 주문하기

제품 상세 정보

Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 6.5 Vout (max) (V) 37 Vout (min) (V) 1.23 Features Enable, Overcurrent protection Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0025 Duty cycle (max) (%) 95
Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 6.5 Vout (max) (V) 37 Vout (min) (V) 1.23 Features Enable, Overcurrent protection Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0025 Duty cycle (max) (%) 95
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm) WSON (NHN) 16 25 mm² (5 mm × 5 mm)
  • Efficiency up to 96%
  • Available in 8-Pin SOIC, PDIP, and WSON
    Packages
  • Simple and Easy to Design With
  • Requires Only 5 External Components
  • Uses Readily Available Standard Inductors
  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.21 V
    to 37 V
  • ±1.5% Maximum Output Voltage Tolerance Over
    Line and Load Conditions
  • Ensured 500-mA Output Load Current
  • 0.25-Ω DMOS Output Switch
  • Wide Input Voltage Range: 8 V to 40 V
  • 260-kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby
    Mode
  • Soft-Start and Frequency Synchronization
  • Thermal Shutdown and Current-Limit Protection
  • Efficiency up to 96%
  • Available in 8-Pin SOIC, PDIP, and WSON
    Packages
  • Simple and Easy to Design With
  • Requires Only 5 External Components
  • Uses Readily Available Standard Inductors
  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.21 V
    to 37 V
  • ±1.5% Maximum Output Voltage Tolerance Over
    Line and Load Conditions
  • Ensured 500-mA Output Load Current
  • 0.25-Ω DMOS Output Switch
  • Wide Input Voltage Range: 8 V to 40 V
  • 260-kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby
    Mode
  • Soft-Start and Frequency Synchronization
  • Thermal Shutdown and Current-Limit Protection

The LM2671 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA load current 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.

Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation, fixed frequency oscillator, external shutdown, soft start, and frequency synchronization.

The LM2671 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of its very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking required.

A family of standard inductors for use with the LM2671 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.

Other features include a ensured ±1.5% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring typically 50-µA standby current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions.

The LM2671 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA load current 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.

Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation, fixed frequency oscillator, external shutdown, soft start, and frequency synchronization.

The LM2671 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of its very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking required.

A family of standard inductors for use with the LM2671 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.

Other features include a ensured ±1.5% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring typically 50-µA standby current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions.
filter 기타 DC/DC 컨버터 찾기
다운로드 스크립트와 함께 비디오 보기 비디오

관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.
TPS560430 활성 4V~36V, 0.6A 동기 스텝다운 SIMPLE SWITCHER® 전력 컨버터 Next-generation 36-V, 600-mA buck regulator with high-efficiency sleep mode.

기술 자료

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18개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LM2671 SIMPLE SWITCHER Power Converter High Efficiency 500-mA Step-Down Voltage Regulator With Features datasheet (Rev. L) PDF | HTML 2016. 6. 30
애플리케이션 노트 Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024. 3. 25
애플리케이션 노트 Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014. 9. 12
애플리케이션 노트 AN-1187 Leadless Leadframe Package (LLP) (Rev. R) 2013. 5. 7
애플리케이션 노트 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013. 4. 24
애플리케이션 노트 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013. 4. 23
애플리케이션 노트 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013. 4. 23
애플리케이션 노트 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013. 4. 23
애플리케이션 노트 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013. 4. 23
애플리케이션 노트 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013. 4. 23
애플리케이션 노트 AN-1Positive-to-Negative Buck-Boost Converter Using LM267x SIMPLE SWITCHER (Rev. E) 2013. 4. 23
애플리케이션 노트 AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013. 4. 23
애플리케이션 노트 AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013. 4. 23
애플리케이션 노트 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013. 4. 23
애플리케이션 노트 Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 2007. 3. 21
애플리케이션 노트 Input and Output Capacitor Selection 2005. 9. 19
추가 자료 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005. 7. 12
애플리케이션 노트 AN-643 EMI/RFI Board Design (Rev. B) 2004. 5. 3

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

패키지 핀 CAD 기호, 풋프린트 및 3D 모델
SOIC (D) 8 Ultra Librarian
PDIP (P) 8 Ultra Librarian
WSON (NHN) 16 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

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