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Rohm Semiconductor Electronic Components Datasheet

BD9G201EFJ-LB Datasheet

1ch Buck Converter

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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
Product structure : Silicon monolithic integrated circuit
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/28
TSZ02201-0252AAJ00140-1-2
09.May.2018 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BD9G201EFJ-LB Datasheet

1ch Buck Converter

No Preview Available !

BD9G201EFJ-LB
Pin Configuration
LX 1
GND 2
VC 3
FB 4
(TOP_VIEW)
THERMAL
PAD
8 VCC
7 BST
6 EN
5 SYNC
Pin Description
Pin No.
1
2
3
4
5
6
7
8
-
Block Diagram
Figure 2. Pin Configuration
Pin Name
LX
GND
VC
FB
SYNC
EN
BST
VCC
THERMAL PAD
Description
Switching terminal
Ground terminal
Error amplifier output terminal
Feedback input terminal
External clock input terminal
Enable terminal
Terminal for boot-strap capacitor
Power supply terminal
PAD for heat dissipation. Always connect to GND.
ON/OFF
EN
10μA
TSD
1.8V +-
ENUVLO
UVLO
REF
REG
shutdown
FB
0.8V
Error
- AMP
+
+
OCP
Current
+ Sense AMP
Σ-
R  Q
S   
VCC
CHG
Current
Sense
BST
Nch FET SW
140mΩ
LX
Soft
Start
VC
Oscillator
SYNC
Maxduty
Logic
10Ω
GND
VOUT
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
Figure 3. Block Diagram
2/28
TSZ02201-0252AAJ00140-1-2
09.May.2018 Rev.001


Part Number BD9G201EFJ-LB
Description 1ch Buck Converter
Maker ROHM
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BD9G201EFJ-LB Datasheet PDF






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