Broad Buck Converter Lineup Delivers Industry-Leading Compatibility

ROHM developed the BD9x family of buck DC/DC converters to meet the various requirements of DC/DC converter applications. From the matrix of input voltage and output current, users can easily find the ideal power supply solution to fit set needs. The optimum product can also be selected based on high-speed response control, light load mode, and other characteristics.

Samples can be purchased online through authorized distributors, along with evaluation boards that make it possible to immediately verify operation.

 

Features

Synchronous/Asynchronous Rectification

A wide variety of both asynchronous types (with no external diode needed) and high-efficiency synchronous rectification models are offered that cover the entire voltage range.

Fast Transient Response with Current Mode and H3RegTM Control

Current-mode operation offers faster transient response characteristics than conventional voltage-mode control. In addition, phase compensation can easily be set and output ripple further reduced. The lineup also includes units that utilize hysteresis control to provide faster transient response than current mode and that do not require phase compensation.

Improved Efficiency at Light Loads

Light load mode reduces the operating current when the load current decreases and the switching frequency remains low, improving efficiency.

Thin, Compact Package with Superior Heat Dissipation

An exposed pad enables high efficiency heat dissipation from the backside of the package to the PCB, making it possible to achieve a 6A DC/DC solution in a compact form factor.

Support for Small Lots

Part numbers ending with -LB are designed for industrial equipment requiring long-term supply and superior reliability. They are available in smaller reels in order to eliminate waste and excess inventory during smaller production runs.

ROHM utilizes the latest technologies to develop products and solutions optimized to customer and market needs.

BD9x Family Product Tree

The BD9x series includes of a range of models to meet customer needs.


 
BD9G101G
6.0-42V,0.5A, 1.5MHz
BD9E151NUX
6.0-28V,1.2A, 600kHz
BD9G341AEFJ
12-76V,3A, 50-750kHz
 
 
 
 
 
 
Asynchronous Rectification (Diode Rectification) Current Mode Control
BD9A100MUV
2.7-5.5V, 1.0A, 1MHz
BD9E100FJ-LB
7.0-36V, 1.0A, 1MHz
BD9A101MUV-LB
2.7-5.5V, 1.0A, 1MHz
BD9E101FJ-LB
7.0-36V, 1.0A, 570kHz
BD9E102FJ
7.0-26V, 1.0A, 570kHz
BD9E300EFJ-LB
7.0-36V, 2.5A, 1MHz
BD9A300MUV/
BD9A301MUV-LB
2.7-5.5V, 3.0A, 1MHz
BD9E301EFJ-LB
7.0-36V, 2.5A, 570kHz
BD9E302EFJ
7.0-26V, 3.0A, 570kHz
BD9C301FJ/
BD9C301FJ-LB
4.5-18V, 3.0A, 500kHz
BD9A400MUV
2.7-5.5V, 4.0A, 1MHz
BD9E303EFJ-LB
7.0-36V, 3.0A, 300kHz
  BD9C401EFJ
4.5-18V, 4.0A, 500kHz
  BD9C501EFJ
4.5-18V, 5.0A, 500kHz
  BD9C601EFJ
4.5-18V, 6.0A, 500kHz
Synchronous Rectification Current Mode Control
BD9B100MUV
2.7-5.5V,1.0A,1M/2MHz
BD9D320EFJ
4.5-18V, 3.0A 700kHz
BD9B200MUV
2.7-5.5V,2.0A,1M/2MHz
 
BD9B300MUV/
BD9B301MUV-LB
7.0-26V, 1.0A, 570kHz
 
BD9D321EFJ/
4.5-18V,3.0A,700kHz
 
BD9B400MUV
2.7-5.5V,4.0A, 1M/2MHz
 
BD9B500MUV
2.7-5.5V, 5.0A, 1M/2MHz
 
BD9B600MUV
2.7-5.5V, 6.0A, 1M/2MHz
 
   
   
Synchronous Rectification On-Time Control
 
 

Evaluation Board Lineup

Select an Output Current range to view the list of available products, then click on the appropriate link under the part number to view the datasheet or order samples/eval boards. (Please note that ICs of the same color are pin-compatible)

 

Output Current (A)