〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

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TSZ02201-0F3F0AJ00170-1-2

© 2017 ROHM Co., Ltd. All rights reserved.

11.Dec.2017 Rev.001

TSZ22111

• 14 • 001

www.rohm.com

2

3

VIN

12V

VIN

EN

COMP

AGND

PGND

FB

1

8

5

7

4

6

Enable

BD9E104FJ

VOUT

BOOT

SW

7.0 V to 26.0 V Input, 1 A Integrated MOSFET

Single Synchronous Buck DC/DC Converter

BD9E104FJ

General Description

BD9E104FJ is a synchronous buck DC/DC converter with

built-in low on-resistance power MOSFETs. High efficiency

at light load with a SLLMTM (Simple Light Load Mode). It is

most suitable for use in the equipment to reduce the

standby power is required. It is a current mode control

DC/DC converter and features high-speed transient

response. Phase compensation can also be set easily.

Features

 SLLMTM Control (Simple Light Load Mode)

 Single Synchronous Buck DC/DC converter

 Over Current Protection

 Short Circuit Protection

 Thermal Shutdown Protection

 Under Voltage Lockout Protection

 Internal Soft Start

 Reduce External Diode

 SOP-J8 Package

Applications

 Consumer Applications such as Home Appliance

 Secondary Power Supply and Adapter Equipment

 Telecommunication Devices

Key Specifications



Input Voltage Range:

7.0 V to 26.0 V



Output Voltage Range:

1.0 V to VIN x 0.5 V



Output Current:

1.0 A (Max)



Switching Frequency:

570 kHz (Typ)



High Side MOSFET ON-Resistance:250

mΩ (Typ)



Low Side MOSFET ON-Resistance: 200

mΩ (Typ)



Shutdown Current:

0

μA (Typ)

Package

W(Typ) x D(Typ) x H(Max)

SOP-J8

4.90mm x 6.00mm x 1.65mm

Typical Application Circuit

SLLMTM is a trademark of ROHM Co., Ltd.

Figure 1. Application Circuit

SOP-J8

Datasheet