전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LMR36503

활성

6μA IQ의 3V~65V, 0.3A 초소형 동기 벅 컨버터

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 60 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 60 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
VQFN-HR (RPE) 9 4 mm² 2 x 2
  • Designed for rugged industrial applications:
    • Junction temperature range –40°C to +150°C
    • Input transient protection up to 70 V
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Low EMI and minimized switch node ringing
    • Adjustable, 5-V fixed output voltage options available
  • Suited for scalable industrial power supplies:
    • Pin compatible with LMR36506 (65 V, 600 mA)
    • Adjustable switching frequency: 200 kHz to 2.2 MHz with RT pin variant
  • Minimized solution size and cost:
    • Highest power density with internal compensation and reduced external component count
    • Ultra-small, 2-mm × 2-mm HotRod™ package with wettable flanks available
  • High efficiency across load range with low power dissipation:
    • > 90% peak efficiency at 1 MHz (5 VOUT adjustable)
  • Ultra-low operating quiescent current at no load
    • 4 µA at 24 VIN to 3.3 VOUT (fixed output option)
  • Designed for rugged industrial applications:
    • Junction temperature range –40°C to +150°C
    • Input transient protection up to 70 V
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Low EMI and minimized switch node ringing
    • Adjustable, 5-V fixed output voltage options available
  • Suited for scalable industrial power supplies:
    • Pin compatible with LMR36506 (65 V, 600 mA)
    • Adjustable switching frequency: 200 kHz to 2.2 MHz with RT pin variant
  • Minimized solution size and cost:
    • Highest power density with internal compensation and reduced external component count
    • Ultra-small, 2-mm × 2-mm HotRod™ package with wettable flanks available
  • High efficiency across load range with low power dissipation:
    • > 90% peak efficiency at 1 MHz (5 VOUT adjustable)
  • Ultra-low operating quiescent current at no load
    • 4 µA at 24 VIN to 3.3 VOUT (fixed output option)

The LMR36503 is the industry smallest 65 V, 0.3 A synchronous step-down DC/DC converter in 2-mm × 2-mm HotRod package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and support fixed 5 V and other adjustable output voltages. The transient tolerance reduces the necessary design effort to protect against input overvoltage and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36503 uses the peak current mode control architecture with internal compensation to maintain stable operation with minimal output capacitance. The LMR36503 with the right resistor selection from the RT pin to ground can be externally programmed to any desired switching frequency of operation over a wide range from 200 kHz to 2.2 MHz. The precision EN/UVLO feature allows precise control of the device during the start-up and shutdown. The power-good flag, with built-in glitch filter and delayed release, offers a true indication of the system status, eliminating the requirement for an external supervisor. The compact solution size and rich feature set of LMR36503 simplifies implementation for a wide range of industrial applications.

The LMR36503 is the industry smallest 65 V, 0.3 A synchronous step-down DC/DC converter in 2-mm × 2-mm HotRod package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and support fixed 5 V and other adjustable output voltages. The transient tolerance reduces the necessary design effort to protect against input overvoltage and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36503 uses the peak current mode control architecture with internal compensation to maintain stable operation with minimal output capacitance. The LMR36503 with the right resistor selection from the RT pin to ground can be externally programmed to any desired switching frequency of operation over a wide range from 200 kHz to 2.2 MHz. The precision EN/UVLO feature allows precise control of the device during the start-up and shutdown. The power-good flag, with built-in glitch filter and delayed release, offers a true indication of the system status, eliminating the requirement for an external supervisor. The compact solution size and rich feature set of LMR36503 simplifies implementation for a wide range of industrial applications.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LMR36506 활성 4μA IQ의 3V~65V, 0.6A 초소형 동기 벅 컨버터 Higher current range

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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8개 모두 보기
유형 직함 날짜
* Data sheet LMR36503 3-V to 65-V, 0.3-A Ultra-Small Synchronous Buck Converter with Ultra-Low IQ datasheet (Rev. B) PDF | HTML 2022/11/08
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024/04/30
Certificate LMR36503MSCEEVM EU Declaration of Conformity (DoC) 2024/04/17
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021/07/26
Technical article Choosing buck converters and LDOs for miniature industrial automation equipment PDF | HTML 2020/01/29
EVM User's guide LMR36503RFEVM User's Guide 2019/04/03
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 2019/02/05
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014/01/22

설계 및 개발

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평가 보드

BOOSTXL-IOLINKM-8 — 8포트 IO-Link Master BoosterPack™

이 BoosterPack™은 Sitara™ AM243x MCU를 지원하는 LP-AM243 TI LaunchPad™ 키트와 함께 작동하도록 설계되었습니다. 이 설계는 함께 결합되어 빠르고 결정성 있는 타이밍과 독립 주기 및 비트율 구성을 지원하는 8포트 IO-Link Master를 구현합니다. 이 설계를 사용하여 OPC UA, Profinet, EtherCAT. 또는 이더넷 IP에 연결하는 원격 IO 게이트웨이를 구축할 수 있습니다. Sitara ™ 프로세서 기반 프레임 핸들러용 (...)

사용 설명서: PDF
TI.com에서 구매 불가
평가 보드

LMR36503EVM — 3V~65V, 0.3A 초소형 동기 벅 컨버터 평가 모듈

The LMR36503 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR36503 synchronous step-down converter.
사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LMR36503R5 PSpice Unencrypted Transient Model

SNVMC52.ZIP (233 KB) - PSpice Model
시뮬레이션 모델

LMR36503RF Unencrypted PSpice Transient Model

SNVMC45.ZIP (226 KB) - PSpice Model
시뮬레이션 모델

LMR36506R PSpice Unencrypted Transient Model

SNVMBW4.ZIP (166 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
VQFN-HR (RPE) 9 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

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