홈 전력 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전력 관리
AC/DC 및 DC/DC 컨버터(통합 FET)

LM2670

활성

SIMPLE SWITCHER 동기화를 지원하는 고효율 3A 스텝 다운 전압 레귤레이터

지금 주문
데이터 시트

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LMR51430 활성 40µA IQ를 지원하는 SIMPLE SWITCHER® 4.5V~36V, 3A 동기 벅 컨버터 Next-generation 3.8-V to 36-V, 3-A synchronous buck converter in SOT-23 package.
TLVM13630 활성 고밀도, 3V~36V 입력, 1V~6V 출력, 3A 스텝다운 전원 모듈 Save board space, simplify design and speed time to market with an integrated-inductor power module.

LM2670

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 40 Vin (min) (V) 6.5 Vout (max) (V) 37 Vout (min) (V) 1.23 Features Frequency synchronization, Over Current Protection Control mode Voltage mode Switching frequency (min) (kHz) 260 Switching frequency (max) (kHz) 400 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 4200 Duty cycle (max) (%) 91 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 40 Vin (min) (V) 6.5 Vout (max) (V) 37 Vout (min) (V) 1.23 Features Frequency synchronization, Over Current Protection Control mode Voltage mode Switching frequency (min) (kHz) 260 Switching frequency (max) (kHz) 400 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 4200 Duty cycle (max) (%) 91 Type Converter
TO-220 (NDZ) 7 82.6008 mm² 10.16 x 8.13 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24 VSON (NHM) 14 30 mm² 6 x 5
  • Efficiency up to 94%
  • Simple and easy to design with (using off-the-shelf external components)
  • 150mΩ DMOS output switch
  • 3.3V, 5V, 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
  • 8V to 40V wide Input voltage range
  • External sync clock capability (280kHz to 400kHz)
  • 260kHz fixed frequency internal oscillator
  • –40 to 125°C operating junction temperature range
  • Create a custom design using the LM2670 with the WEBENCH® Power Designer
  • Efficiency up to 94%
  • Simple and easy to design with (using off-the-shelf external components)
  • 150mΩ DMOS output switch
  • 3.3V, 5V, 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
  • 8V to 40V wide Input voltage range
  • External sync clock capability (280kHz to 400kHz)
  • 260kHz fixed frequency internal oscillator
  • –40 to 125°C operating junction temperature range
  • Create a custom design using the LM2670 with the WEBENCH® Power Designer

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.

The SIMPLE SWITCHER power converter 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 280kHz to 400kHz 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.

The LM2670 series also has built-in thermal shutdown, current limiting, and an ON and OFF control input that can power down the regulator to a low 50µA quiescent current standby condition. The output voltage is specified to a ±2% tolerance.

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.

The SIMPLE SWITCHER power converter 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 280kHz to 400kHz 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.

The LM2670 series also has built-in thermal shutdown, current limiting, and an ON and OFF control input that can power down the regulator to a low 50µA quiescent current standby condition. The output voltage is specified to a ±2% tolerance.
filter 기타 AC/DC 및 DC/DC 컨버터(통합 FET) 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LMR33630 활성 SIMPLE SWITCHER® 3.8V~36V, 3A 동기 벅 컨버터, 초저 EMI Next-generation 3.8-V to 36-V, 3-A synchronous buck converter with ultra-low EMI.

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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19개 모두 보기
유형 직함 날짜
* Data sheet LM2670 SIMPLE SWITCHER® Power Converter, High-Efficiency, 3A, Step-Down Voltage Regulator With Sync datasheet (Rev. L) PDF | HTML 2025/06/25
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/03/25
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014/09/12
Application note AN-1187 Leadless Leadframe Package (LLP) (Rev. R) 2013/05/07
EVM User's guide AN-1135 LM267X 3A, 5A Evaluation Boards (Rev. D) 2013/04/24
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/04/24
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-1Positive-to-Negative Buck-Boost Converter Using LM267x SIMPLE SWITCHER (Rev. E) 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

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

패키지 핀 CAD 기호, 풋프린트 및 3D 모델
TO-220 (NDZ) 7 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian
VSON (NHM) 14 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

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

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

지원 및 교육

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