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1ch Buck Converter Integrated FET - BD9G341AEFJ-LB

This is the product guarantees long time support in Industrial market. The BD9G341AEFJ-LB is a buck switching regulator with integrated 150mΩ power MOSFET. Current mode architecture provides fast transient response and a simple phase compensation setup. The operating frequency is programmable from 50kHz to 750kHz. Additional protection features are included such as Over Current Protection, Thermal shutdown and Under voltage lockout. The under voltage lockout and hysteresis can be set by external resistor.

Part Number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9G341AEFJ-LBE2 Active HTSOP-J8 2500 2500 Taping Yes
 
Specifications:
Grade Industrial
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Nonsynchronous
Vin1(Min.)[V] 12.0
Vin1(Max.)[V] 76.0
Vout1(Min.)[V] 1.0
Vout1(Max.)[V] 76.0
Iout1(Max.)[A] 3.0
SW frequency(Max.)[MHz] 0.75
EN Yes
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Features:
    • Long Time Support Product for Industrial Applications
    • Wide input voltage range from 12V to 76V.
    • Integrated 80V/3.5A/150mΩ NchFET.
    • Current mode.
    • Variable frequency from 50kHz to 750kHz.
    • Accurate reference voltage. (1.0V±1.5%).
    • Precision EN threshold (±3%).
    • Soft-start function
    • 0µA Standby current
    • Over Current Protection (OCP),
      Under Voltage Lockout (UVLO),
      Thermal-Shutdown (TSD),
      Over Voltage Protection (OVP)
    • Thermally enhanced HTSOP-J8 package
 
 
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Technical Data
White Paper

Industrial DC/DC Buck Converters BD9x Series

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.