전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LM22673

활성

조정 가능한 소프트 시작 및 전류 제한을 지원하는 SIMPLE SWITCHER® 4.5V~42V, 3A 스텝다운 전압 레귤레이터

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LMQ66430 활성 3.5µA IQ를 지원하는 36V, 1A 저 EMI 동기 스텝다운 컨버터 Integrated input bypass capacitor and boot cap for lower EMI and smaller footprint, dual-random spread spectrum and lower IQ.
TLVM13630 활성 고밀도, 3V~36V 입력, 1V~16V 출력, 3A 스텝다운 전원 모듈 Save board space, simplify design and speed time to market with an integrated-inductor power module.

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Features Adjustable current limit, Enable, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.285 Vout (max) (V) 37 Iq (typ) (µA) 3400 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Features Adjustable current limit, Enable, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.285 Vout (max) (V) 37 Iq (typ) (µA) 3400 Duty cycle (max) (%) 90
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 TO-263 (NDR) 7 142.3416 mm² 10.16 x 14.01
  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable with Low ESR Ceramic Capacitors
  • 120 mΩ N-Channel MOSFET PFM Package
  • 100 mΩ N-Channel MOSFET SO PowerPAD
    Package
  • 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
  • Adjustable Soft-Start
  • Adjustable Current Limit
  • Integrated Boot-Strap Diode
  • Fully Webench® Enabled
  • LM22673-Q1 is an Automotive Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
    Junction Temperature)
  • SO PowerPAD (Exposed Pad)
  • PFM (Exposed Pad)
  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable with Low ESR Ceramic Capacitors
  • 120 mΩ N-Channel MOSFET PFM Package
  • 100 mΩ N-Channel MOSFET SO PowerPAD
    Package
  • 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
  • Adjustable Soft-Start
  • Adjustable Current Limit
  • Integrated Boot-Strap Diode
  • Fully Webench® Enabled
  • LM22673-Q1 is an Automotive Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
    Junction Temperature)
  • SO PowerPAD (Exposed Pad)
  • PFM (Exposed Pad)

The LM22673 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 3 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. An adjustable soft-start feature is provided through the selection of a single external capacitor. In addition, the switch current limit can be programmed with a single external resistor, allowing solution optimization. The LM22673 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22673 device is a member of Texas Instruments’ SIMPLE SWITCHER® family. The SIMPLE 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.

The LM22673 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 3 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. An adjustable soft-start feature is provided through the selection of a single external capacitor. In addition, the switch current limit can be programmed with a single external resistor, allowing solution optimization. The LM22673 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22673 device is a member of Texas Instruments’ SIMPLE SWITCHER® family. The SIMPLE 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.

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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
23개 모두 보기
유형 직함 날짜
* Data sheet LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER®, Step-Down Voltage Regulator with Features datasheet (Rev. O) PDF | HTML 2014/11/05
Application note SIMPLE SWITCHER Regulators Take Over Automotive Applications (Rev. B) PDF | HTML 2024/10/09
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/03/25
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014/09/12
Application note AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B) 2013/05/06
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 2013/05/06
Application note AN-1797 TO-263 THIN Package (Rev. A) 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
EVM User's guide AN-1894 LM22673 Evaluation Board (Rev. D) 2013/04/23
Application note AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C) 2013/04/23
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/04/23
Design guide SIMPLE SWITCHER® Design Guide 2011/04/11
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.

평가 보드

LM22673EVAL — LM22673 조정 가능한 소프트 시작 및 스위칭 주파수를 지원하는 3A SIMPLE SWITCHER 레귤레이터 EVM

The LM22673 evaluation board is designed to demonstrate the capabilities of the LM22673 switching regulator. The LM22673 evaluation board is configured to provide an output voltage of 3.3V up to 3A load current with an input voltage range of 4.5V to 42V. Due to the low RDS(ON) of the integrated (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM22673-5.0 PSpice Average Model

SNVM181.ZIP (54 KB) - PSpice Model
시뮬레이션 모델

LM22673-5.0 PSpice Transient Model

SNVM182.ZIP (221 KB) - PSpice Model
시뮬레이션 모델

LM22673-5.0 Unencrypted PSpice Average Model

SNVM896.ZIP (1 KB) - PSpice Model
시뮬레이션 모델

LM22673-5.0 Unencrypted PSpice Transient Model

SNVM898.ZIP (4 KB) - PSpice Model
시뮬레이션 모델

LM22673-ADJ PSpice Average Model

SNVM279.ZIP (53 KB) - PSpice Model
시뮬레이션 모델

LM22673-ADJ PSpice Transient Model

SNVM280.ZIP (208 KB) - PSpice Model
시뮬레이션 모델

LM22673-ADJ Unencrypted PSpice Average Model

SNVM895.ZIP (1 KB) - PSpice Model
시뮬레이션 모델

LM22673-ADJ Unencrypted PSpice Transient Model

SNVM897.ZIP (4 KB) - PSpice Model
계산 툴

LM2267X-22680DESIGN-CALC — LM2267x, LM22680 빠른 시작 Simple Switcher 구성 요소 계산기

패키지 CAD 기호, 풋프린트 및 3D 모델
HSOIC (DDA) 8 Ultra Librarian
TO-263 (NDR) 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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