전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LM2854

활성

4A 500kHz/1MHz 동기 벅 레귤레이터

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
TPS62810-Q1 활성 2mm x 3mm 습식 플랭크 QFN 패키지로 제공되는 오토모티브 2.75V ~ 6V, 4A 스텝다운 컨버터 This product has higher efficiency, low EMI, functional-safety capable and small solution size.

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 2.95 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1000 Features Enable, Synchronous Rectification, Tracking Control mode Voltage mode Vout (min) (V) 0.8 Vout (max) (V) 5 Iq (typ) (µA) 1700 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 2.95 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1000 Features Enable, Synchronous Rectification, Tracking Control mode Voltage mode Vout (min) (V) 0.8 Vout (max) (V) 5 Iq (typ) (µA) 1700 Duty cycle (max) (%) 100
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • Input Voltage Range of 2.95 V to 5.5 V
  • Maximum Load Current of 4 A
  • Wide Bandwidth Voltage Mode Control Loop, Partial Internal Compensation
  • Fixed Switching Frequency of 500 kHz or 1 MHz
  • 35-mΩ Integrated MOSFET Switches
  • Adjustable Output Voltage Down to 0.8 V
  • Optimized Reference Voltage Initial Accuracy and Temperature Drift
  • External Soft-Start Control With Tracking Capability
  • Enable Pin With Hysteresis
  • Low Standby Current of 230 µA
  • Pre-Biased Load Start-up Capability
  • Integrated UVLO, OCP, and Thermal Shutdown
  • 100% Duty Cycle Capability
  • HTSSOP-16 Exposed Pad Package
  • Input Voltage Range of 2.95 V to 5.5 V
  • Maximum Load Current of 4 A
  • Wide Bandwidth Voltage Mode Control Loop, Partial Internal Compensation
  • Fixed Switching Frequency of 500 kHz or 1 MHz
  • 35-mΩ Integrated MOSFET Switches
  • Adjustable Output Voltage Down to 0.8 V
  • Optimized Reference Voltage Initial Accuracy and Temperature Drift
  • External Soft-Start Control With Tracking Capability
  • Enable Pin With Hysteresis
  • Low Standby Current of 230 µA
  • Pre-Biased Load Start-up Capability
  • Integrated UVLO, OCP, and Thermal Shutdown
  • 100% Duty Cycle Capability
  • HTSSOP-16 Exposed Pad Package

The LM2854 PowerWise™ buck regulator is a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V. Externally established soft-start with a small capacitor facilitates controlled start-up, and the LM2854 is capable of starting gracefully into a pre-biased output voltage. Partial internal compensation reduces the number of external passive components and PC board space typically necessary in a voltage mode buck converter application, yet preserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Lossless cycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuit fault, and an enable comparator simplifies sequencing applications. The LM2854 is available in an exposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.

The LM2854 PowerWise™ buck regulator is a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V. Externally established soft-start with a small capacitor facilitates controlled start-up, and the LM2854 is capable of starting gracefully into a pre-biased output voltage. Partial internal compensation reduces the number of external passive components and PC board space typically necessary in a voltage mode buck converter application, yet preserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Lossless cycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuit fault, and an enable comparator simplifies sequencing applications. The LM2854 is available in an exposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.

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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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5개 모두 보기
유형 직함 날짜
* Data sheet LM2854 4-A 500-kHz / 1-MHz Synchronous Buck Regulator datasheet (Rev. E) PDF | HTML 2017/10/04
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
EVM User's guide AN-1786 LM2854 500 kHz Buck Regulator Evaluation Board (Rev. B) 2013/05/01
EVM User's guide AN-1880 LM2854 1MHz Buck Regulator Demo Board (Rev. B) 2013/05/01
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013/04/23

설계 및 개발

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시뮬레이션 모델

LM2854X PSpice Average Model

SNVM268.ZIP (51 KB) - PSpice Model
시뮬레이션 모델

LM2854X PSpice Transient Model

SNVM266.ZIP (155 KB) - PSpice Model
시뮬레이션 모델

LM2854X Unencrypted PSpice Average Model

SNVM915.ZIP (1 KB) - PSpice Model
시뮬레이션 모델

LM2854X Unencrypted PSpice Transient Model

SNVM917.ZIP (2 KB) - PSpice Model
시뮬레이션 모델

LM2854Y PSpice Average Model

SNVM265.ZIP (53 KB) - PSpice Model
시뮬레이션 모델

LM2854Y PSpice Transient Model

SNVM267.ZIP (164 KB) - PSpice Model
시뮬레이션 모델

LM2854Y Unencrypted PSpice Average Model

SNVM918.ZIP (1 KB) - PSpice Model
시뮬레이션 모델

LM2854Y Unencrypted PSpice Transient Model

SNVM916.ZIP (2 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
HTSSOP (PWP) 16 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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