BD9D320EFJ-EVK-001: 3.3V @ 3A, 5.08 ~ 18V in


BD9D320EFJ-EVK-001 Evaluation board delivers an output 3.3 volts from an input 5.08 to 18 volts using BD9D320EFJ, a synchronous rectification step-down DC/DC converter integrated circuit, with output current rating of maximum 3A. It offers high efficiency in all load ranges by equipping the efficiency improvement function in light-load. The output voltage can be set by changing the external parts of circuit and the loop-response characteristics also can be adjusted by the phase compensation circuit.

BD9D320EFJ is a synchronous buck switching regulator with built-in low on-resistance power MOSFETs. It is capable of providing current of up to 3 A. External phase compensation circuit is not necessary for it is a constant on-time control DC/DC converter with high speed response.


Manufacturer Rohm Semiconductor
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number BD9D320EFJ-EVK-001-ND
Eval Board Supplier Rohm Semiconductor
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 3 A
Voltage In 5.08 ~ 18 V
Efficiency @ Conditions >85%, 12V in, 3.3V @ 0.5 ~ 3 A
Voltage Out Range - Fixed
Features Over Current Protection
Short Circuit Protection
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 700 kHz
Standby Current [Typical] 2 µA
Quiescent Current [Typical] 1 mA
Component Count + Extras 14 + 5
Internal Switch Yes
Design Author Rohm
Application / Target Market DVD/Blu-ray Players
FPGA / DSP / Processors
LCD TV / Monitor
Set-Top Boxes
Standby Current [Maximum] 15 µA
Quiescent Current [Maximum] 2 mA
Main I.C. Base Part BD9D320EFJ
Date Created By Author 2014-12
Date Added To Library 2019-11

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