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7.0-35V 4A 1ch Buck converter - BD9781HFP

로옴의 Flexible 강압 스위칭 레귤레이터는 외장 저항으로 동작 주파수를 자유롭게 설정할 수 있는 고내압 파워 MOSFET 내장 스위칭 레귤레이터입니다. 넓은 입력전압범위 (7V~35V), 넓은 동작온도범위 (-40~125℃)로 각종 어플리케이션에 대응 가능합니다. 또한, 온도 보호회로 (TSD), 과전류 보호회로 (OCP), 저전압 오동작 방지 회로 (UVLO) 등 충실한 보호회로 내장으로 다양한 조건 하에서도 어플리케이션을 보호하여 세트의 고신뢰성을 실현할 수 있습니다.

형명
상태
패키지
포장 수량
최소 포장 단위
포장 사양
RoHS
BD9781HFP-TR 공급중 HRP7 2000 2000 Taping Yes
 
사양 :
Grade Automotive
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 7.0
Vin1(Max.)[V] 35.0
Vout1(Min.)[V] 1.0
Vout1(Max.)[V] 35.0
Iout1(Max.)[A] 4.0
SW frequency(Max.)[MHz] 0.5
Light Load mode No
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 125
특징 :
  • ・넓은 입력전압범위 (7V~35V)
    ・스탠바이 시 소비전류 (0μA)
    ・외장 저항으로 출력전압 설정 가능 (1V~VIN)
    ・외장 저항으로 발진 주파수 가변 (50kHz~500kHz)
    ・Pch POWER MOSFET 내장
    ・외장동기 가능
 
 
관련 상품
관련 신제품 / 갱신 제품파워 매니지먼트
형명 제품 이름 패키지 Datasheet 유통 재고
BD9778F 7.0-35V 2A 1ch Buck converter SOP8   구입
BD9778HFP 7.0-35V 2A 1ch Buck converter HRP7   구입
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기술 정보
Capacitor Calculation for Buck converter IC

This application note explains the calculation of external capacitor value for buck converter IC circuit.

Inductor Calculation for Buck converter IC

This application note covers the steps required in choosing the inductor and to calculate the value used in buck regulator IC circuits.

Resistor Value Table to set Output Voltage of Buck Converter IC

This Application Note offers reference table to easily set resistor values for output voltage with various internal reference voltages VREF.

Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.

The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit

Using unmatched MLCC may not obtain required target characteristics for power supply circuit and may cause abnormal operation. This application note explains the important points while using MLCC.

Calculation of Power Loss (Synchronous)

This application note describes how to obtain the power loss required to calculate the temperature of a semiconductor device. Temperature control is important to ensuring product reliability.

Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.

Considerations for Power Inductors Used for Buck Converters

This application note explains the features and things to consider when shopping for power inductors.

Snubber Circuit for Buck Converter IC

In buck converter ICs, many high-frequency noises are generated at switch nodes. A snubber circuit provides one way of eliminating such harmonic noise. This application note explains how to set up the RC snubber circuits.

Efficiency of Buck Converter

This application note explains power loss factors and methods for calculating them. It also explains how the relative importance of power loss factors depends on the specifications of the switching power source.

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)

This application note introduces a method for easily measuring the phase margin with a Frequency Response Analyzer (FRA) made by NF Corporation.