Input Voltage 5V to 35V Output Switch Current 2A 1ch Step-Down DC/DC Converter

The BD90660HFP-C BDD9060F-C are high-accuracy frequency-flexible step-down switching regulators with built-in POWER MOSFET which can withstand high pressure. The operational frequency is freely configurable with external resistance. It features a wide input voltage range (5V to 35V) and a high frequency accuracy of ±5% (f=200kHz to 500kHz). Furthermore, an external synchronization input pin enables synchronous operation with external clock. The output capacitor corresponds to the ceramic capacitor.

Product Detail

Part Number | BD9060HFP-CTR
Status | Recommended
Package | HRP7
Unit Quantity | 2000
Minimum Package Quantity | 2000
Packing Type | Taping
RoHS | Yes

Functional Safety:

Category : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.




Common Standard

AEC-Q100 (Automotive Grade)



Integrated FET / Controller

Integrated FET



Synchronous / Nonsynchronous












Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Package Size [mm]

9.395x10.54 (t=2.005)


・ Minimal external components
・ P-ch POWER MOSFET included in the package
・ Low dropout:100% ON duty cycle
・ External synchronization enabled
・ Soft start function: soft start time fixed to 2.7ms (Typ)
・ Built-in overcurrent protection circuit
・ Built-in thermal shutdown protection circuit

Design Resources



White Paper

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

Technical Articles

Schematic Design & Verification

  • 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
  • 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
  • Diode Selection Method for Asynchronous Converter
  • 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

  • What Is Thermal Design
  • Basics of Thermal Resistance and Heat Dissipation
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Thermocouples
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple


Simulations (Login Required)

ROHM Solution Simulator is a new web-based electronic circuit simulation tool that can carry out a variety of simulations, from initial development that involves component selection and individual device verification to the system-level verification stage. This makes it possible to quickly and easily implement complete circuit verification of ROHM power devices and ICs, in simulation circuits under close to actual conditions, significantly reducing application development efforts.
  • BD9060HFP / Frequency Domain
  • BD9060HFP/BD9060F Simulation Guide (ROHM Solution Simulator)


  • BD9060HFP-C, BD9060F-C PSPICE Model
  • BD9060HFP-C SPICE Modeling Report


  • BD9060HFP-C Footprint / Symbol
  • HRP7 Footprint / Symbol
  • HRP7 3D STEP Data

Packaging & Quality

Package Information

  • 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 Contained Report
  • REACH SVHC Contained Report
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)