BD9C301FJ-LB(H2)
4.5V to 18V Input, 3.0A Integrated MOSFET 1ch Synchronous Buck DC/DC Converter

This is the product guarantees long time support in Industrial market. BD9C301FJ is a synchronous buck switching regulator with built-in low on-resistance power MOSFETs. With wide input voltage range, It is capable of providing current of up to 3 A. It is a current mode control DC/DC converter and features high-speed transient response. Phase compensation can also be set easily.

Product Detail

 
Part Number | BD9C301FJ-LBGH2
Status | Active
Package | SOP-J8
Unit Quantity | 250
Minimum Package Quantity | 250
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Industrial

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck

Synchronous / Nonsynchronous

Synchronous

Vin1(Min.)[V]

4.5

Vin1(Max.)[V]

18.0

Vout1(Min.)[V]

0.8

Vout1(Max.)[V]

12.6

Iout1(Max.)[A]

3.0

SW frequency(Max.)[MHz]

0.55

Light Load mode

No

EN

Yes

PGOOD

No

Operating Temperature (Min.)[°C]

Tj=-40

Operating Temperature (Max.)[°C]

Tj=125

Features:

· Long time support a product for Industrial applications.
· Synchronous 1 ch DC/DC converter
· Over Current protection
· Thermal Shutdown protection
· Under Voltage lockout protection
· Short Circuit Protection
· Fixed soft start function 1msec

Evaluation
Board

 
    • Evaluation Board
    • BD9C301FJ-EVK-001
    • BD9C301FJ-EVK-001 Evaluation board delivers an output 3.3 volts from an input 4.5 to 18 volts using BD9C301FJ, a synchronous rectification stepdown DC/DC converter integrated circuit, with output current rating of maximum 3A. The output voltage can be set by changing the external parts of circuit and the loop-response characteristics also can be adjusted by the phase compensation circuit.

  • User's Guide Design Data Buy

Design Resources

 

Documents

White Paper

  • Industrial DC/DC Buck Converters BD9x Series
  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs

User's Guide

  • Evaluation Board User's Guide
  • Evaluation Board Data

Application Note

  • PCB Layout for BD9C301FJ-LB(H2)

Reference Design

  • BD9C301FJ-LB(H2) Reference Circuits and Bomlist

Technical Articles

Schematic Design & Verification

  • Buck DC/DC Converter Recommended Inductor List
  • Calculation of Power Dissipation in Switching Circuit
  • Considering Input Filter to Reduce Conducted Emissions by DCDC Converter
  • Considering Polarity of Power Inductor to Reduce Radiated Emission of DC-DC converter
  • Method for Monitoring Switching Waveform
  • Phase Compensation Design for Current Mode Buck Converter
  • Bootstrap Circuit in the Buck Converter
  • Method for Determining Constants of
  • Power Supply Sequence Circuit with General Purpose Power Supply IC
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • PCB Layout Techniques of Buck Converter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • Usage of SPICE Macromodel for DC/DC
  • Snubber Circuit for Buck Converter IC
  • Efficiency of Buck Converter
  • Calculation of Power Loss (Synchronous)
  • Inductor Calculation for Buck converter IC
  • Considerations for Power Inductors Used for Buck Converters
  • Capacitor Calculation for Buck converter IC
  • The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
  • Resistor Value Table to set Output Voltage of Buck Converter IC
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Thermocouples
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Tools

Models

  • BD9C301FJ-LB(H2) SPICE Model
  • Unencrypted SPICE Model (Inquiry Form)

2D/3D/CAD

  • SOP-J8 Footprint / Symbol
  • SOP-J8 3D STEP Data

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)