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Integrated Circuits (ICs)

BD9B400MUV-E2

Active
Rohm Semiconductor

2.7V TO 5.5V INPUT, 4.0A INTEGRATED MOSFET SINGLE SYNCHRONOUS BUCK DC/DC CONVERTER

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Product dimension image
Integrated Circuits (ICs)

BD9B400MUV-E2

Active
Rohm Semiconductor

2.7V TO 5.5V INPUT, 4.0A INTEGRATED MOSFET SINGLE SYNCHRONOUS BUCK DC/DC CONVERTER

Technical Specifications

Parameters and characteristics for this part

SpecificationBD9B400MUV-E2
Current - Output4 A
Frequency - Switching1 MHz, 2 MHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature [Max]85 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output TypeAdjustable
Package / Case16-VFQFN Exposed Pad
Supplier Device PackageVQFN016V3030
Synchronous RectifierTrue
TopologyBuck
Voltage - Input (Max) [Max]5.5 V
Voltage - Input (Min) [Min]2.7 V
Voltage - Output (Max) [Max]4.4 V
Voltage - Output (Min/Fixed)0.8 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyCut Tape (CT) 1$ 1.86
10$ 1.18
25$ 1.00
100$ 0.80
250$ 0.70
500$ 0.64
1000$ 0.59
Digi-Reel® 1$ 1.86
10$ 1.18
25$ 1.00
100$ 0.80
250$ 0.70
500$ 0.64
1000$ 0.59
Tape & Reel (TR) 3000$ 0.53
6000$ 0.50
9000$ 0.48
15000$ 0.47
21000$ 0.46
NewarkEach (Supplied on Cut Tape) 1$ 1.24
10$ 0.93
25$ 0.85
50$ 0.77
100$ 0.71
300$ 0.67
500$ 0.63
1000$ 0.60

Description

General part information

BD9B400MUV Series

BD9B400MUV is a synchronous buck switching regulator with built-in low on-resistance power MOSFETs. This IC, which is capable of providing current up to 4A, 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.

Documents

Technical documentation and resources

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)

Schematic Design & Verification

Impedance Characteristics of Bypass Capacitor

Schematic Design & Verification

PCB Layout Essential Check sheet for Switching Regulator

Schematic Design & Verification

Considering Input Filter to Reduce Conducted Emissions by DCDC Converter

Schematic Design & Verification

Method for Calculating Junction Temperature from Transient Thermal Resistance Data

Thermal Design

BD9B400MUV Reference Circuits and Bomlist

Reference Design

Types of Capacitors Used for Output Smoothing of Switching Regulators and their Precautions

Schematic Design & Verification

How to Use the Thermal Resistance and Thermal Characteristics Parameters

Thermal Design

Cutting-Edge Web Simulation Tool "ROHM Solution Simulator" Capable of Complete Circuit Verification of Power Devices and Driver ICs

White Paper

PCB Layout Thermal Design Guide

Thermal Design

Considering Polarity of Power Inductor to Reduce Radiated Emission of DC-DC converter

Schematic Design & Verification

Step-down DC-DC converter PCB layout EMC Design guide

Schematic Design & Verification

BD9B400MUV Data Sheet

Data Sheet

Phase Compensation Design for Current Mode Buck Converter

Schematic Design & Verification

Power Supply Sequence Circuit with General Purpose Power Supply IC

Schematic Design & Verification

Precautions for PCB Layout Regarding Common Mode Filters

Technical Article

Factory Information

Manufacturing Data

Bootstrap Circuit in the Buck Converter

Schematic Design & Verification

Method for Determining Constants of Peripheral Parts of Buck DC/DC Converter

Schematic Design & Verification

Resistor Value Table to set Output Voltage of Buck Converter IC

Schematic Design & Verification

Anti-Whisker formation

Package Information

Calculation of Power Loss (Synchronous)

Schematic Design & Verification

Buck DC/DC Converter Recommended Inductor List

Schematic Design & Verification

Snubber Circuit for Buck Converter IC

Schematic Design & Verification

Design Guide and Example of Stencil for Exposed Pad

Thermal Design

VQFN016V3030 Package Information

Package Information

Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter

Schematic Design & Verification

θ<sub>JA</sub> and Ψ<sub>JT</sub>

Thermal Design

Two-Resistor Model for Thermal Simulation

Thermal Design

What Is Thermal Design

Thermal Design

Efficiency of Buck Converter

Schematic Design & Verification

The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit

Schematic Design & Verification

Solder Joint Rate and Thermal Resistance of Exposed Pad

Thermal Design

Five Steps for Successful Thermal Design of IC

White Paper

Considerations for Power Inductors Used for Buck Converters

Schematic Design & Verification

UL94 Flame Classifications of Mold Compound

Environmental Data

Three Steps for Successful Design of DC-DC Converters

White Paper

Overview of ROHM's Simulation Models(for ICs and Discrete Semiconductors)

Technical Article

PCB Layout Techniques of Buck Converter

Schematic Design & Verification

Heat Dissipation Effect of Thermal Via in Exposed Pad Type Package

Thermal Design

Thermal Resistance

Thermal Design

Capacitor Calculation for Buck converter IC

Schematic Design & Verification

Judgment Criteria of Thermal Evaluation

Thermal Design

Technical Data Sheet EN

Datasheet

Product Change Notice EN

Datasheet