Specification	BD9611MUV-E2

Clock Sync	True
Control Features	Soft Start, Frequency Control, Current Limit, Enable
Frequency - Switching [Max]	500 kHz
Frequency - Switching [Min]	50 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	105 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	20-VFQFN Exposed Pad
Supplier Device Package	VQFN020V4040
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	56 V
Voltage - Supply (Vcc/Vdd) [Min]	10 V

BD9611 Series

Part	Board Type	Supplied Contents	Outputs and Type	Outputs and Type	Contents	Frequency - Switching	Voltage - Input [Max]	Voltage - Input [Min]	Current - Output	Voltage - Output	Regulator Topology	Utilized IC / Part	Main Purpose	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Control Features	Topology	Package / Case	Function	Synchronous Rectifier	Clock Sync	Output Configuration	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Supplier Device Package	Number of Outputs	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Type	Output Phases
Rohm Semiconductor BD9611MUV-EVK-001	Fully Populated	Board(s)	1	1 Non-Isolated Output Non-Isolated	Board(s)	250 kHz	36 V	15 V	10 A	12 V	Buck	BD9611	DC/DC Step Down
Rohm Semiconductor BD9611MUV-E2														-40 °C	105 °C	Surface Mount	Current Limit Enable Frequency Control Soft Start	Buck	20-VFQFN Exposed Pad	Step-Down			Positive	56 V	10 V	VQFN020V4040	1	50 kHz	500 kHz	Transistor Driver	1

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.34
		10	$ 2.17
		100	$ 1.51
		500	$ 1.23
		1000	$ 1.14
	Digi-Reel®	1	$ 3.34
		10	$ 2.17
		100	$ 1.51
		500	$ 1.23
		1000	$ 1.14
	N/A	1578	$ 3.32
	Tape & Reel (TR)	2500	$ 1.05
Newark	Each (Supplied on Cut Tape)	1	$ 2.69
		10	$ 2.51
		25	$ 2.36
		50	$ 2.22
		100	$ 2.07
		250	$ 1.91
		500	$ 1.85
		1000	$ 1.79

Description

General part information

BD9611 Series

The BD9611MUV is a high-resistance, wide voltage input (10V to 56V), synchronous step-down switching regulator. BD9611MUV offers design flexibility through user-programmable functions such as soft-start, operating frequency, high-side current limit, and loop compensation. BD9611MUV uses voltage pulse width modulation, and drives 2 external N-channel FETs. The Under-Voltage Locked Output (EXUVLO) protection connected to its CTL terminal has high accuracy reference voltage. Its threshold voltage can be adjusted by the resistance ratio between VCC and GND as seen by pin CTL. BD9611MUV is safe for pre-biased outputs. It does not turn on the synchronous rectifier until the internal high-side FET has already started switching.

Documents

Technical documentation and resources

BD9611MUV-E2

Deep-Dive with AI

BD9611MUV-E2

Deep-Dive with AI

Technical Specifications

BD9611 Series

Pricing

Description

BD9611 Series

Documents

PCB Layout Techniques of Buck Converter

Considerations for Power Inductors Used for Buck Converters

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

UL94 Flame Classifications of Mold Compound

θ<sub>JC</sub> and Ψ<sub>JT</sub>

Anti-Whisker formation

BD9611MUV Reference Circuits and Bomlist

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

Judgment Criteria of Thermal Evaluation

SPICE Modeling Report - BD9611MUV : 60V Synchronous Step-down Switching Regulator (Controller Type)

Power Supply Sequence Circuit with General Purpose Power Supply IC

Snubber Circuit for Buck Converter IC

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

Efficiency of Buck Converter

Precautions When Measuring the Rear of the Package with a Thermocouple

Phase Compensation Design for Current Mode Buck Converter

Simulation Guide for BD9611MUV / Frequency Response (ROHM Solution Simulator)

Solder Joint Rate and Thermal Resistance of Exposed Pad

Evaluation Board User's Guide

VQFN020V4040 Package Information

Design Guide and Example of Stencil for Exposed Pad

Buck DCDC application circuit example using BD9611MUV

Factory Information

Heat Dissipation Effect of Thermal Via in Exposed Pad Type Package

θ<sub>JA</sub> and Ψ<sub>JT</sub>

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

How to Use the Thermal Resistance and Thermal Characteristics Parameters

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

Precautions for PCB Layout Regarding Common Mode Filters

Two-Resistor Model for Thermal Simulation

Compliance with the ELV directive

Calculation of Power Dissipation in Switching Circuit

Considering Input Filter to Reduce Conducted Emissions by DCDC Converter

Five Steps for Successful Thermal Design of IC

Diode Selection Method for Asynchronous Converter

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

Thermal Resistance

PCB Layout Thermal Design Guide

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

BD9611MUV Data Sheet

Basics of Thermal Resistance and Heat Dissipation

Resistor Value Table to set Output Voltage of Buck Converter IC

Capacitor Calculation for Buck converter IC

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

PCB Layout Essential Check sheet for Switching Regulator

How to Use the Two-Resistor Model

Calculation of Power Loss (Synchronous)

1ch Buck Switching Regulator BD9611MUV Phase Compensation Setting

What Is Thermal Design

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

Inductor Calculation for Buck converter IC

Method for Calculating Junction Temperature from Transient Thermal Resistance Data

Impedance Characteristics of Bypass Capacitor

Three Steps for Successful Design of DC-DC Converters

BD9611 Series