BD9B301MUV-LB
2.7V to 5.5V Input, 3.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter

This is the product guarantees long time support in Industrial market. BD9B301MUV-LB is a synchronous buck switching regulator with built-in low on-resistance power MOSFETs. This IC, which is capable of providing current up to 3A, features fast transient response by employing constant on-time control system. It offers high oscillating frequency at low inductance. With its original constant on-time control method which operates low consumption at light load, this product is ideal for equipment and devices that demand minimal standby power consumption.

Product Detail

 
Part Number | BD9B301MUV-LBE2
Status | Recommended
Package | VQFN016V3030
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Industrial

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck

Synchronous / Nonsynchronous

Synchronous

Vin1(Min.)[V]

2.7

Vin1(Max.)[V]

5.5

Vout1(Min.)[V]

0.8

Vout1(Max.)[V]

4.4

Iout1(Max.)[A]

3.0

SW frequency(Max.)[MHz]

2.0

Light Load mode

Yes

EN

Yes

PGOOD

Yes

Operating Temperature (Min.)[°C]

Tj=-40

Operating Temperature (Max.)[°C]

Tj=125

Features:

  • Long Time Support Product for Industrial Applications
  • Synchronous Single DC/DC Converter
  • Constant on-time control suitable to Deep-SLLM
  • Over Current Protection
  • Short Circuit Protection
  • Thermal Shutdown Protection
  • Under Voltage Lockout Protection
  • Adjustable Soft Start
  • Power Good Output
  • VQFN016V3030 Package (Backside Heat Dissipation)

Evaluation
Board

 
    • Evaluation Board
    • BD9B301MUV-EVK-101
    • This evaluation board has been specifically developed to evaluate ROHM’s BD9B301MUV synchronous buck DC/DC converter with integrated 32mΩ Pch high-side and Nch low-side MOSFETs.

  • User's Guide Buy

Design Resources

 

Documents

White Paper

  • White Paper
  • 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

Application Note

  • PCB Layout for BD9B301MUV-LB

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

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

Tools

Simulations (Login Required)

  • Method for Exporting Circuit Data (ROHM Solution Simulator)

Calculation Tools

  • Calculation-sheet for the circuit theoretical formula - BD9B301MUV-LB

Models

  • Unencrypted SPICE Model (Inquiry Form)
  • BD9B301MUV-LB SPICE Model

2D/3D/CAD

  • BD9B301MUV-LB Footprint / Symbol
  • VQFN016V3030 Footprint / Symbol
  • VQFN016V3030 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)