BD9C501EFJ
BD9C501EFJ
4.5V to 18V Input, 5.0A Integrated MOSFET 1ch Synchronous Buck DC/DC Converter
BD9C501EFJ is a synchronous buck switching regulator with built-in low on-resistance power MOSFETs. With wide input voltage range, It is capable of providing current of up to 5A. It is a current mode control DC/DC converter and features high-speed transient response. Phase compensation can also be set easily.
Data Sheet
Buy
*
Sample
*
* This is a standard-grade product.
For Automotive usage, please contact Sales.
For Automotive usage, please contact Sales.
Product Detail
Part Number | BD9C501EFJ-E2
Status |
Recommended
Package |
HTSOP-J8
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS |
Yes
Specifications:
Grade
Standard
ch
1
Integrated FET / Controller
Integrated FET
Topology
Buck
Synchronous / Nonsynchronous
Synchronous
Vin1(Min.)[V]
4.5
Vin1(Max.)[V]
18.0
Vout1(Min.)[V]
0.8
Vout1(Max.)[V]
12.6
Iout1(Max.)[A]
5.0
SW frequency(Max.)[MHz]
0.55
Light Load mode
No
EN
Yes
PGOOD
No
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
4.9x6 (t=1)
Features:
・ Synchronous 1 ch DC/DC converter・ Over Current protection
・ Thermal Shutdown protection
・ Under Voltage lockout protection
・ Short Circuit Protection
・ Fixed soft start function 1msec
Evaluation
Board
-
- Evaluation Board
- BD9C501EFJ-EVK-001
This evaluation board has been developed for ROHM’s synchronous buck DC/DC converter customers evaluating BD9C501EFJ. While accepting a power supply of 4.72-18V, an output of 3.3V can be produced. The IC has internal 50mΩ high-side P-channel MOSFET and 35mΩ low-side N-channel MOSFET and a synchronization frequency is of 500kHz.
Design Resources
Documents
Data Sheet
User's Guide
- Evaluation Board User's Guide
- Evaluation Board Data
Application Note
Reference Design
Technical Articles
Schematic Design & Verification
- Buck DC/DC Converter Recommended Inductor List
- 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
- Bootstrap Circuit in the Buck Converter
- Method for Determining Constants of Peripheral Parts of Buck DC/DC Converter
- Power Supply Sequence Circuit with General Purpose Power Supply IC
- Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
- 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
- Notes for Temperature Measurement Using Thermocouples
- Two-Resistor Model for Thermal Simulation
- Notes for Temperature Measurement Using Forward Voltage of PN Junction
- Thermal Resistance
- Precautions When Measuring the Rear of the Package with a Thermocouple
Tools
Calculation Tools
This Calculation Sheet supports the application circuit design of switching regulators. The sheet has formulas necessary for determining peripheral parts. You can easily determine the circuit parameters that meet the desired characteristics by setting the values according to the guidance.
- Calculation-sheet for the circuit theoretical formula - BD9C501EFJ
2D/3D/CAD
- HTSOP-J8 Footprint / Symbol
- HTSOP-J8 3D STEP Data