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Integrated Circuits (ICs)

BD9S231NUX-CE2

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Rohm Semiconductor

CONV DC-DC 2.7V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.8V TO 5.5V 2A 8-PIN VSON-X EP T/R AUTOMOTIVE AEC-Q100

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Product dimension image
Integrated Circuits (ICs)

BD9S231NUX-CE2

Active
Rohm Semiconductor

CONV DC-DC 2.7V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.8V TO 5.5V 2A 8-PIN VSON-X EP T/R AUTOMOTIVE AEC-Q100

Technical Specifications

Parameters and characteristics for this part

SpecificationBD9S231NUX-CE2
Current - Output2 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 / Case8-UFDFN Exposed Pad
QualificationAEC-Q100
Supplier Device PackageVSON008X2020
Synchronous RectifierTrue
TopologyBuck
Voltage - Input (Max) [Max]5.5 V
Voltage - Input (Min) [Min]2.7 V
Voltage - Output (Max) [Max]5.5 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$ 1.37
10$ 1.00
25$ 0.90
100$ 0.80
250$ 0.75
500$ 0.72
1000$ 0.70
Digi-Reel® 1$ 1.37
10$ 1.00
25$ 0.90
100$ 0.80
250$ 0.75
500$ 0.72
1000$ 0.70
Tape & Reel (TR) 4000$ 0.66
8000$ 0.65
12000$ 0.64
NewarkEach (Supplied on Cut Tape) 1$ 2.13
10$ 1.27
25$ 1.13
50$ 1.01
100$ 0.87
250$ 0.83
500$ 0.79
1000$ 0.73

Description

General part information

BD9S231NUX-C Series

BD9S231NUX-C is a synchronous buck DC/DC Converter with built-in low On Resistance power MOSFETs. It is capable of providing current up to 2A. 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. It has a built-in phase compensation circuit. Applications can be created with a few external components.

Documents

Technical documentation and resources

Evaluation Board User's Guide for BD9S231NUX-TSB-001

User's Guide

Considerations for Power Inductors Used for Buck Converters

Schematic Design & Verification

θ<sub>JA</sub> and Ψ<sub>JT</sub>

Thermal Design

Impedance Characteristics of Bypass Capacitor

Schematic Design & Verification

PCB Layout Thermal Design Guide

Thermal Design

BD9S231NUX-C Data Sheet

Data Sheet

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

Technical Article

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

Heat Dissipation Effect of Thermal Via in Exposed Pad Type Package

Thermal Design

How to Use the Thermal Resistance and Thermal Characteristics Parameters

Thermal Design

Three Steps for Successful Design of DC-DC Converters

White Paper

Efficiency of Buck Converter

Schematic Design & Verification

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

Schematic Design & Verification

Snubber Circuit for Buck Converter IC

Schematic Design & Verification

Considering Input Filter to Reduce Conducted Emissions by DCDC Converter

Schematic Design & Verification

Capacitor Calculation for Buck converter IC

Schematic Design & Verification

Precautions for PCB Layout Regarding Common Mode Filters

Technical Article

PCB Layout Essential Check sheet for Switching Regulator

Schematic Design & Verification

Five Steps for Successful Thermal Design of IC

White Paper

Power Supply Sequence Circuit with General Purpose Power Supply IC

Schematic Design & Verification

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

Schematic Design & Verification

What Is Thermal Design

Thermal Design

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

Schematic Design & Verification

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

Schematic Design & Verification

Thermal Resistance

Thermal Design

Two-Resistor Model for Thermal Simulation

Thermal Design

Judgment Criteria of Thermal Evaluation

Thermal Design

Solder Joint Rate and Thermal Resistance of Exposed Pad

Thermal Design

Calculation of Power Loss (Synchronous)

Schematic Design & Verification

Factory Information

Manufacturing Data

Method for Calculating Junction Temperature from Transient Thermal Resistance Data

Thermal Design

PCB Layout Techniques of Buck Converter

Schematic Design & Verification

Phase Compensation Design for Current Mode Buck Converter

Schematic Design & Verification

Bootstrap Circuit in the Buck Converter

Schematic Design & Verification

Resistor Value Table to set Output Voltage of Buck Converter IC

Schematic Design & Verification

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

Schematic Design & Verification

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

White Paper

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

Schematic Design & Verification