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BD9E101FJ-LB Datasheet

1.0A Integrated MOSFET / Single Synchronous Buck DC/DC Converter

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Datasheet
7.0V to 36V Input, 1.0 A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9E101FJ-LB
General Description
This is the product guarantees long time support in
Industrial market.
BD9E101FJ-LB is a synchronous buck switching regulator
with built-in power MOSFETs. It is capable of an output
current of up to 1.0A. It is a current mode control DC/DC
converter and features high-speed transient response.
Phase compensation can also be set easily.
Features
„ Long Time Support Product for Industrial
Applications.
„ Synchronous single DC/DC converter.
„ Over-Current Protection.
„ Short Circuit Protection.
„ Thermal Shutdown Protection.
„ Undervoltage Lockout Protection.
„ Soft Start.
„ SOP-J8 package.
Key Specifications
„ Input Voltage Range:
7.0V to 36V
„ Output Voltage Range:
1.0V to VIN×0.7V
„ Output Current:
1.0A (Max)
„ Switching Frequency:
570kHz (Typ)
„ High-Side MOSFET ON-Resistance: 300m(Typ)
„ Low-Side MOSFET ON-Resistance: 300m(Typ)
„ Standby Current:
0μA (Typ)
Package
SOP-J8
W (Typ) x D (Typ) x H (Max)
4.90mm x 6.00mm x 1.65mm
Applications
„ Industrial Equipment.
„ Power supply for FA’s industrial device using 24V
bass.
„ Consumer applications such as home appliance.
Distribution type power supply system for 12V, and
24V.
SOP-J8
Typical Application Circuit
VIN
24V
10μF
Enable
2 VIN
BD9E101FJ-LB BOOT 1
3 EN
COMP
6
AGND
4
PGND
7
30kΩ
4700pF
SW 8
FB
5 12kΩ
3kΩ
0.1μF
10μH
VOUT
22μF×2
Figure 1. Application circuit
Product structureSilicon monolithic integrated circuit.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays.
1/30
TSZ02201-0J3J0AJ00390-1-2
14.May.2014 Rev.003


Rohm Semiconductor Electronic Components Datasheet

BD9E101FJ-LB Datasheet

1.0A Integrated MOSFET / Single Synchronous Buck DC/DC Converter

No Preview Available !

BD9E101FJ-LB
Pin Configuration
(TOP VIEW)
BOOT 1
VIN 2
8 SW
7 PGND
EN 3
6 COMP
AGND 4
5 FB
Pin Description(s)
Pin No Pin Name
Figure 2. Pin assignment
Description
1
BOOT
Connect a bootstrap capacitor of 0.1µF between this terminal and SW terminal.
The voltage of this capacitor is the gate drive voltage of the high-side MOSFET.
2
VIN
Power supply terminal for the switching regulator and control circuit.
Connecting a 10µF ceramic capacitor is recommended.
Turning this terminal signal low-level (0.8V or lower) forces the device to enter the shut
3 EN down mode. Turning this terminal signal high-level (2.5V or higher) enables the device.
This terminal must be terminated.
4 AGND Ground terminal for the control circuit.
5
FB
Inverting input node for the gm error amplifier.
See page 22 on how to calculate the resistance of the output voltage setting.
Input terminal for the gm error amplifier output and the output switch current comparator.
6
COMP
Connect a frequency phase compensation component to this terminal.
See page 23 on how to calculate the resistance and capacitance for phase
compensation.
7 PGND Ground terminal for the output stage of the switching regulator.
Switch node. This terminal is connected to the source of the high-side MOSFET and
8
SW
drain of the low-side MOSFET. Connect a bootstrap capacitor of 0.1µF between this
terminal and BOOT terminal. In addition, connect an inductor considering the direct
current superimposition characteristic.
www.rohm.co
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/30
TSZ02201-0J3J0AJ00390-1-2
14.May.2014 Rev.003


Part Number BD9E101FJ-LB
Description 1.0A Integrated MOSFET / Single Synchronous Buck DC/DC Converter
Maker ROHM
Total Page 30 Pages
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