BD9G401EFJ-M
1ch Buck Converter Integrated FET

BD9G401EFJ is a buck converter with built-in high side MOSFET. It has an input voltage range of 4.5V to 42V. Current mode architecture provides fast transient response and a simple phase compensation setup. The IC is mainly used as a secondary side power supply: for example, a step-down output of 3.3V/5V can be produced from voltage power supply such as 12V or 24V. In addition, it has a synchronization function with an external CLK that provides noise management.

Product Detail

 
Part Number | BD9G401EFJ-ME2
Status | Recommended
Package | HTSOP-J8ES
Unit Quantity | 2500
Minimum Package Quantity | 2500
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.

Specifications:

Grade

Automotive

Common Standard

AEC-Q100 (Automotive Grade)

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck

Synchronous / Nonsynchronous

Non-synchronous

Vin1(Min.)[V]

4.5

Vin1(Max.)[V]

42.0

Vout1(Min.)[V]

0.8

Vout1(Max.)[V]

42.0

Iout1(Max.)[A]

3.5

SW frequency(Max.)[MHz]

0.5

Light Load mode

No

EN

Yes

PGOOD

No

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

Package Size [mm]

4.9x6 (t=1)

Features:

  • AEC-Q100 Qualified
  • Integrated Nch MOSFET
  • Synchronizes to external clock 200kHz to 500kHz
  • ON/OFF Control through EN Pin (Standby current of 0µA)
  • Small package (HTSOP-J8ES)
  • LowDrop Out operation

Evaluation
Board

 
    • Evaluation Board
    • BD9G401EFJ-EVK-001
    • This EVK has been developed for ROHM’s non-synchronous buck DC/DC converter customers evaluating BD9G401EFJ-M. While the BD9G401EFJ-M accepts a power supply input range of 4.5V to 42V, and generates output voltages from 1V to VCC, this EVK is setup for the input voltage range of 10V to 42V and a fixed output of 5V can be produced.

  • User's Guide Purchase Inquiry

Design Resources

 

Technical Articles

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 - BD9G401EFJ-M

Models

2D/3D/CAD

  • HTSOP-J8ES Footprint / Symbol

Packaging & Quality

Package Information

Manufacturing Data