Datasheet
4.5V to 42V Input Voltage Range 1.5A Output Current Integrated FET
1ch Buck Converter
BD9G201EFJ-LB
General Description
This is the product guarantees long time support in
Industrial market.
BD9G201EFJ-LB 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.
Key Specifications
Input Voltage range :
4.5V to 42V
Reference voltage precision
(Ta= 25°C) ±1.5%
(Ta= -40°C to +105°C) ±2.0%
Max Output Current :
1.5A(Max)
Operating Temperature range : -40°C to +105°C
Package W (Typ) x D (Typ) x H (Max)
HTSOP-J8ES
4.90mm x 6.00mm x 1.00mm
Features
Long Time Support Product for Industrial
Applications
Integrated Nch MOSFET
Synchronizes to external clock 250kHz to 500kHz
ON/OFF Control through EN Terminal
(Standby current of 0µA)
Small package(HTSOP-J8ES)
LowDrop Out operation
HTSOP-J8ES
Applications
Industrial distributed-power applications
Typical Application Circuit
0.1µF
5V/1.5A
VOUT
COUT
: 47µF/16V
L1: 22µH
D1
160kΩ
30kΩ
0.01μF
4.7kΩ
LX
GND
VC
FB
VCC
BST
EN
SYNC
CVCC
: 10µF/50V
VCC
R4
EN
R5
SYNC
Figure 1. Typical Application Circuit
〇Product structure : Silicon monolithic integrated circuit
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
〇This product has no designed protection against radioactive rays
1/28
TSZ02201-0252AAJ00140-1-2
09.May.2018 Rev.001
