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Step-down Switching Regulators with Built-in Power MOSFET - BD9G101G

Internal high-side 42V Power MOSFET. It provides 0.5A DC output with small SOT23 package. Operating frequency is fixed 1.5MHz, allowing the use of small inductor and ceramic capacitor. Phase compensation components is built in. The BD9G101G is available in SOT-23-6(SSOP6) package.

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* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9G101G-TR Active SSOP6 3000 3000 Taping Yes
 
Specifications:
Grade Standard
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Nonsynchronous
Vin1(Min.)[V] 6.0
Vin1(Max.)[V] 42.0
Vout1(Min.)[V] 1.0
Vout1(Max.)[V] 29.4
Iout1(Max.)[A] 0.5
SW frequency(Max.)[MHz] 1.7
EN Yes
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
Features:
  • ・ High and Wide Input Range (VCC=6V~42V)
    ・ 45V/800mΩ Internal Power MOSFET
    ・ 1.5MHz Fixed Operating Frequency
    ・ Feedback Pin Voltage 0.75V±1.5%
    ・ Internal compensated
    ・ Internal Over Current protection, Under Voltage Locked Out, Thermal shutdown
    ・ 0μA Shutdown Supply Current
    ・ 6-Lead SOT-23 package(SSOP6)
 
 
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New Products:
 
 
Technical Data
Reference Circuits and Bomlist

Reference Circuits and Bomlist

Evaluation Board User's Guide

Evaluation Board for ROHM's BD9G101G Buck Converter with Built-In Power FET

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.

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.

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.

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.

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...

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.

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.

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.

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.

Considerations for Power Inductors Used for Buck Converters

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