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Rohm Semiconductor Electronic Components Datasheet

BD9E103FJ Datasheet

1.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter

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Datasheet
7V to 28V Input, 1.5A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9E103FJ
General Description
BD9E103FJ is a single synchronous buck DC/DC
converter with built-in low on-resistance power
MOSFETs. The SLLMTM control provides excellent
efficiency characteristics in light-load conditions which
make the product ideal for equipment and devices that
demand minimal standby power consumption.
BD9E103FJ is a current mode control DC/DC converter
and features high-speed transient response. Phase
compensation can also be set easily.
Features
Single Synchronous Buck DC/DC Converter
5V Fixed Output Voltage
SLLMTM (Simple Light Load Mode) Control
Efficiency = 80% (@IOUT=10mA)
Over Current Protection
Short Circuit Protection
Thermal Shutdown Protection
Under Voltage Lockout Protection
Over Voltage Protection
Internal Soft Start
Reduced 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:
Fixed Output Voltage:
Output Current:
Switching Frequency:
High-Side MOSFET ON-Resistance:
Low-Side MOSFET ON-Resistance:
7V to 28V
5.0V (Typ)
1.5A (Max)
330kHz (Typ)
250(Typ)
200(Typ)
Package
SOP-J8
W (Typ) x D (Typ) x H (Max)
4.90 mm x 6.00 mm x 1.65 mm
SOP-J8
Typical Application Circuit
VIN
CIN
2 VIN
BD9E103FJ
BOOT 1
SW 8
3 NC
COMP
6
NC
4
GND VOUT
75
0.1μF
22μH
VOUT
COUT
Figure 1. Application Circuit
Product structureSilicon monolithic integrated circuit.
www.rohm.com
© 2017 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product has no designed protection against radioactive rays.
1/24
TSZ02201-0F3F0AJ00140-1-2
25.Sep.2017 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BD9E103FJ Datasheet

1.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter

No Preview Available !

BD9E103FJ
Pin Configuration
BOOT 1
VIN 2
NC 3
NC 4
(TOP VIEW)
8 SW
7 GND
6 COMP
5 VOUT
Pin Description
Pin No. Pin Name
1 BOOT
2 VIN
3 NC
4 NC
5 VOUT
6 COMP
7 GND
8 SW
Description
Connect a bootstrap capacitor of 0.1µF between BOOT terminal and SW terminal.
The voltage of this capacitor is the gate drive voltage of the High-Side MOSFET.
Power supply terminal for the switching regulator and control circuit.
Connecting a more than 10µF ceramic capacitor is recommended.
No connection terminal.
No connection terminal.
Output voltage sense terminal.
Output terminal for the error amplifier and input terminal for PWM comparator.
Connect phase compensation components to this terminal.
Ground terminal for the control circuit and output stage of the switching regulator.
Switch terminal. This terminal is connected to the source of the High-Side MOSFET and
drain of the Low-Side MOSFET. Connect a bootstrap capacitor of 0.1µF between BOOT
terminal and SW terminal. In addition, connect an inductor of 22µH considering the direct
current superimposition characteristic.
www.rohm.com
© 2017 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
2/24
TSZ02201-0F3F0AJ00140-1-2
25.Sep.2017 Rev.001


Part Number BD9E103FJ
Description 1.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter
Maker ROHM
Total Page 28 Pages
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