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2.7-5.5V 1.2A 1ch Buck converter_BD9123MUV

ROHM的高效率降压开关稳压器BD9123MUV是由5V/3.3V以下的电源线产生0.85V~1.2V电压的电源。能够凭借内置的选择器设定输出电压。通过独创的脉冲跳动控制技术和同步整流电路实现高效化。采用电流模式控制方式,实现了在负荷急变下高速过渡反应。

* 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
BD9123MUV-E2 供应中 VQFN016V3030 3000 3000 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] 2.7
Vin1(Max.)[V] 5.5
Vout1(Min.)[V] 0.85
Vout1(Max.)[V] 1.2
Iout1(Max.)[A] 1.2
SW frequency(Max.)[MHz] 1.0
Light Load mode Yes
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
特点:
  • ・通过电流模式PWM控制方式,实现高速过渡反应
    ・内置同步整流(Pch/Nch FET)、SLLM™通过Simple Light Load Mode实现全负荷领域高效率
    ・内置输出电压内部设定功能(3bit)
    ・内置PGOOD功能
    内置软启动功能
    ・内置温度/UVLO保护功能
    ・内置定时锁定式短路保护功能
    ・内置关机功能Icc=0μA(Typ.)
    ・高散热小型表面安装封装:采用VQFN016V3030
 
 
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技术信息
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.