홈 전원 관리 AC/DC & DC/DC converters (integrated FET)
홈
전원 관리
AC/DC & DC/DC converters (integrated FET)

LMR70503

활성

2.8V~5.5V, 300mA 벅/부스트 음극 출력 전압 레귤레이터

지금 주문
데이터시트

LMR70503

활성
데이터시트 지금 주문

제품 상세 정보

Vin (min) (V) 2.8 Vin (max) (V) 5.5 Topology Inverting Type Converter Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1000 Features Enable Vout (min) (V) -5.5 Vout (max) (V) -0.9 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0003
Vin (min) (V) 2.8 Vin (max) (V) 5.5 Topology Inverting Type Converter Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1000 Features Enable Vout (min) (V) -5.5 Vout (max) (V) -0.9 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0003
DSBGA (YFX) 8 1.8 mm² 1.8 x 1
  • Tiny 8-Bump Thin DSBGA Package: 0.84 mm × 1.615 mm × 0.6 mm
  • 2.8 V to 5.5 V Input Voltage Range
  • Adjustable Output Voltage: -0.9 V to -5.5 V
  • 320 mA Switch Current Limit
  • 500 kHz Minimum Switching Frequency
  • Ground Referred Enable Input
  • Under Voltage Lock Out (UVLO)
  • No External Compensation
  • Internal Soft Start
  • 1 µA Shutdown Supply Current
  • Small Output Voltage Ripple
  • WEBENCH Enabled

Performance Benefits

  • Easy To Use
  • Tiny Overall Solution Size Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • Tiny 8-Bump Thin DSBGA Package: 0.84 mm × 1.615 mm × 0.6 mm
  • 2.8 V to 5.5 V Input Voltage Range
  • Adjustable Output Voltage: -0.9 V to -5.5 V
  • 320 mA Switch Current Limit
  • 500 kHz Minimum Switching Frequency
  • Ground Referred Enable Input
  • Under Voltage Lock Out (UVLO)
  • No External Compensation
  • Internal Soft Start
  • 1 µA Shutdown Supply Current
  • Small Output Voltage Ripple
  • WEBENCH Enabled

Performance Benefits

  • Easy To Use
  • Tiny Overall Solution Size Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LMR70503 is a buck-boost converter with adjustable negative output voltage in a tiny 8-bump thin DSBGA package. Its unique control method is designed to provide fast transient response, low output noise, high efficiency, and tight regulation in the smallest possible PCB area. The LMR70503 has built in soft start, peak current limit, minimum switching frequency, and Under Voltage Lock Out (UVLO), with no external compensation required. For ease of use, the Enable pin is referred to the IC ground, instead of the lowest potential of the IC: the negative output voltage.

The LMR70503 is a buck-boost converter with adjustable negative output voltage in a tiny 8-bump thin DSBGA package. Its unique control method is designed to provide fast transient response, low output noise, high efficiency, and tight regulation in the smallest possible PCB area. The LMR70503 has built in soft start, peak current limit, minimum switching frequency, and Under Voltage Lock Out (UVLO), with no external compensation required. For ease of use, the Enable pin is referred to the IC ground, instead of the lowest potential of the IC: the negative output voltage.

open-in-new 기타 AC/DC & DC/DC converters (integrated 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
TPS63700 활성 3x3 QFN, 조정 가능 -15V 출력 반전 DC/DC 컨버터 Maximum Vin is 5.5 V

기술 문서

star =TI에서 선정한 이 제품의 인기 문서
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모두 보기14
유형 직함 날짜
* Data sheet LMR70503 Buck-Boost Converter For Negative Output Voltage in DSBGA datasheet (Rev. A) 2013/04/04
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/03/25
Application brief Buck-Boost Converters Solving Power Challenges in Optical Modules 2019/05/13
Application note Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 2019/03/12
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
EVM User's guide AN-2264 LMR70503 Demo Board (Rev. A) 2013/04/25
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-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 Input and Output Capacitor Selection 2005/09/19
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

LMR70503EVM — LMR70503 평가 모듈

The LMR70503 is an inverting buck-boost converter with adjustable negative output voltage in a tiny 8-bump thin micro SMD package (0.84 mm × 1.615 mm × 0.6 mm). Its unique control method is designed to provide fast transient response, low outputnoise, high efficiency, and tight regulation in the (...)
사용 설명서: PDF
TI.com에서 구매할 수 없습니다
시뮬레이션 모델

LMR70503 Unencrypted PSpice Transient Model

SNVM973.ZIP (3 KB) - PSpice Model
다운로드
시뮬레이션 모델

LMR70503 Unencrypted PSpice Transient Model Package (Rev. A)

SNVM473A.ZIP (84 KB) - PSpice Model
다운로드
레퍼런스 디자인

TIDA-00431 — 8GHz DC 커플링된 차동 증폭기를 사용하는 RF 샘플링 4GSPS ADC 레퍼런스 디자인

Wideband radio frequency (RF) receivers allow greatly increased flexibility in radio designs. The wide instantaneous bandwidth allows flexible tuning without changing hardware and the ability to capture multiple channels at widely separated frequencies.

This reference design describes a wideband RF (...)

Design guide: PDF
회로도: PDF
레퍼런스 디자인

TIDA-00826 — 50Ohm, 2GHz 오실로스코프 프론트 엔드 레퍼런스 디자인

This reference design is part of an analog front-end for 50Ω-input oscilloscope application. System designers can readily use this evaluation platform to process input signals from DC to 2 GHz in both frequency-domain and time-domain applications.
Design guide: PDF
회로도: PDF
패키지 핀 다운로드
DSBGA (YFX) 8 옵션 보기
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

지원 및 교육

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포럼 주제 모두 보기(영문)

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