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ROHM BD9S400MUF-CE2
Integrated Circuits (ICs)

BD9S400MUF-CE2

Active
Rohm Semiconductor

2.7V TO 5.5V INPUT, 4A INTEGRATED MOSFET SINGLE SYNCHRONOUS BUCK DC/DC CONVERTER FOR AUTOMOTIVE

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ROHM BD9S400MUF-CE2
Integrated Circuits (ICs)

BD9S400MUF-CE2

Active
Rohm Semiconductor

2.7V TO 5.5V INPUT, 4A INTEGRATED MOSFET SINGLE SYNCHRONOUS BUCK DC/DC CONVERTER FOR AUTOMOTIVE

Technical Specifications

Parameters and characteristics for this part

SpecificationBD9S400MUF-CE2
Current - Output4 A
Frequency - Switching2.2 MHz
FunctionStep-Down
GradeAutomotive
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature [Max]125 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output TypeAdjustable
Package / Case16-VFQFN Exposed Pad
QualificationAEC-Q100
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$ 4.28
10$ 2.83
25$ 2.46
100$ 2.03
250$ 1.83
500$ 1.70
1000$ 1.59
Digi-Reel® 1$ 4.28
10$ 2.83
25$ 2.46
100$ 2.03
250$ 1.83
500$ 1.70
1000$ 1.59
N/A 5660$ 2.91
Tape & Reel (TR) 3000$ 1.40
NewarkEach (Supplied on Cut Tape) 1$ 3.11
10$ 2.42
25$ 2.27
50$ 2.12
100$ 1.97
300$ 1.75
500$ 1.60
1000$ 1.49

Description

General part information

BD9S400 Series

BD9S400MUF-C is a synchronous buck DC/DC Converter with built-in low On Resistance power MOSFETs. It is capable of providing current up to 4A. The SLLM™ control provides excellent efficiency characteristics in light-load conditions which make the product ideal for reducing standby power consumption of equipment. Small inductor is applicable due to high switching frequency of 2.2MHz. It is a current mode control DC/DC Converter and features high-speed transient response. Phase compensation can also be set easily. It can also be synchronized to external pulse.8-channel power tree Reference DesignFor automotive ADAS and Info-Display

Documents

Technical documentation and resources

Technical Data Sheet EN

Datasheet

AEC-Q101 Automotive Requirements

Related Document

Precautions for PCB Layout Regarding Common Mode Filters

Technical Article

θ<sub>JC</sub> and Ψ<sub>JT</sub>

Thermal Design

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

Schematic Design & Verification

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

Technical Article

Resistor Value Table to set Output Voltage of Buck Converter IC

Schematic Design & Verification

How to Use the Thermal Resistance and Thermal Characteristics Parameters

Thermal Design

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

Schematic Design & Verification

Design Guide and Example of Stencil for Exposed Pad

Thermal Design

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

Schematic Design & Verification

BD9S400MUF-C Two-Resistor Thermal Model Report

Models

User's Guide for REFRPT001-EVK-001

User's Guide

Two-Resistor Model for Thermal Simulation

Thermal Design

PCB Layout Techniques of Buck Converter

Schematic Design & Verification

Thermal Resistance

Thermal Design

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

Schematic Design & Verification

REFRPT001-EVK-001 EMC Test Report

Reference Design

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

Schematic Design & Verification

Solder Joint Rate and Thermal Resistance of Exposed Pad

Thermal Design

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

White Paper

For Automotive ADAS/Infotainment application, CISPR25 Class5 compliant 8 rails power tree Reference Design with power rail monitoring for supporting functional safety

White Paper

Considerations for Power Inductors Used for Buck Converters

Schematic Design & Verification

Heat Dissipation Effect of Thermal Via in Exposed Pad Type Package

Thermal Design

VQFN16FV3030 Package Information

Package Information

Efficiency of Buck Converter

Schematic Design & Verification

Simulation Guide for REFRPT001 for 3.3V power tree sub-circuit / Load Response (ROHM Solution Simulator)

Simulations

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

Schematic Design & Verification

PCB Layout Essential Check sheet for Switching Regulator

Schematic Design & Verification

Method for Calculating Junction Temperature from Transient Thermal Resistance Data

Thermal Design

Snubber Circuit for Buck Converter IC

Schematic Design & Verification

Phase Compensation Design for Current Mode Buck Converter

Schematic Design & Verification

Diode Selection Method for Asynchronous Converter

Schematic Design & Verification

Power Supply Sequence Circuit with General Purpose Power Supply IC

Schematic Design & Verification

Calculation of Power Dissipation in Switching Circuit

Schematic Design & Verification

Five Steps for Successful Thermal Design of IC

White Paper

Capacitor Calculation for Buck converter IC

Schematic Design & Verification

Bootstrap Circuit in the Buck Converter

Schematic Design & Verification

Factory Information

Manufacturing Data

Three Steps for Successful Design of DC-DC Converters

White Paper

Basics of Thermal Resistance and Heat Dissipation

Thermal Design

BD9S400MUF-C SPICE Modeling Report

Models

Precautions When Measuring the Rear of the Package with a Thermocouple

Thermal Design

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

Schematic Design & Verification

θ<sub>JA</sub> and Ψ<sub>JT</sub>

Thermal Design

CISPR25 Class5 Compliant, 8 rails power tree reference design for automotive ADAS and Info-Display

Reference Design

How to Use the Two-Resistor Model

Thermal Design

PCB Layout Thermal Design Guide

Thermal Design

Considering Input Filter to Reduce Conducted Emissions by DCDC Converter

Schematic Design & Verification

Judgment Criteria of Thermal Evaluation

Thermal Design

Application Note for REFRPT001-EVK-001

Reference Design

What Is Thermal Design

Thermal Design

Impedance Characteristics of Bypass Capacitor

Schematic Design & Verification

Calculation of Power Loss (Synchronous)

Schematic Design & Verification

Inductor Calculation for Buck converter IC

Schematic Design & Verification

BD9S400MUF-C Data Sheet

Data Sheet