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4.2-18V 3A 1ch Synchronous Buck converter_BD9329AEFJ

BD9329AEFJ是同步整流降压DC/DC转换器,内置有低导通电阻的功率MOSFET。拥有宽输入电压范围,并可进行大约3A电流的连续输出。使用少量外置元器件即可构成,控制了成本。由于是电流模式控制DC/DC转换器,所以具有高速响应性,相位补偿也简单。.
ROHM recommends BD9C301FJ for new design.
Please refer to Buck DC/DC Converter IC Replacement Guide for more information.

* 本产品是标准级的产品。本产品不建议使用的车载设备。
型号
Status
封装
包装数量
最小独立包装数量
包装形态
RoHS
BD9329AEFJ-E2 - HTSOP-J8 2500 2500 Taping Yes
 
特性:
Grade Standard
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 4.2
Vin1(Max.)[V] 18.0
Vout1(Min.)[V] 0.9
Vout1(Max.)[V] 12.6
Iout1(Max.)[A] 3.0
SW frequency(Max.)[MHz] 0.38
Light Load mode No
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
特点:
  • ・输入电压范围 4.2V~18.0V
    ・3A 输出电流
    ・Hi 0.15Ω / Low 0.13Ω MOSFET ON 电阻
    ・支持低ESR 陶瓷电容
    ・低待机电流
    ・工作频率380kHz
    ・反馈电压 0.9V ±1.5%(Ta=25℃),0.9V±2%(Ta=-25℃~85℃)
    ・保护电路 低电压误动作防止电路
            温度保护电路
            过电流保护电路
    ・HTSOP-J8 封装 (背面金属封装)
 
 
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New Products:
 
 
技术信息
Reference Circuits and Bomlist

Reference Circuits and Bomlist

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.

PCB Layout Techniques of Buck Converter

Major problems that arise from in appropriate layout may cause increase in noise superposed by output and switching signal, the deterioration of regulator, and also lack of stability...

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.