LED Driver. BD9408FV Datasheet

BD9408FV Driver. Datasheet pdf. Equivalent

Part BD9408FV
Description White LED Driver
Feature Datasheet LED Drivers for LCD Backlights 1ch Boost Up Type White LED Driver for Large LCD BD9408FV.
Manufacture ROHM
Datasheet
Download BD9408FV Datasheet



BD9408FV
Datasheet
LED Drivers for LCD Backlights
1ch Boost Up Type
White LED Driver for Large LCD
BD9408FV
General Description
BD9408FV is a high efficiency driver for white LEDs and
it is designed for large LCDs. BD9408FV has a boost
DC/DC converter that can supply appropriate voltage to
the light source of LEDs series array.
BD9408FV has some protect functions against fault
conditions, such as over voltage protection(OVP), over
current limit protection of DC/DC(OCP), LED OCP
protection, and over boost protection(FBMAX). Therefore,
it is available for a wide range output voltage and a wide
range load current.
Key Specifications
Operating Power Supply Voltage Range:
9.0V to 35.0V
Oscillator Frequency of DC/DC:
150kHz(RRT=100kΩ)
Operating Current:
3mA(Typ)
Operating Temperature Range: -40°C to +105°C
Package
SSOP-B14
W(Typ) x D(Typ) x H(Max)
5.00mm x 6.40mm x 1.35mm
Features
DC/DC Converter with Current Mode
LED Protection Circuit(Over Boost Protection, LED
OCP Protection)
Over Voltage Protection(OVP) for the Output Voltage
Adjustable Soft Start
Adjustable Oscillation Frequency of DC/DC
Wide Range of Analog Dimming 0.2V to 3.0V
LED Dimming PWM Over Duty Protection(ODP)
Applications
TV, Computer Display
Other LCD Backlighting
SSOP-B14
Typical Application Circuit
部品の記号を記入すること
Product structure: Silicon monolithic integrated circuit
.www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
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This product has no designed protection against radioactive rays
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BD9408FV
BD9408FV
Contents
General Description ........................................................................................................................................................................1
Features..........................................................................................................................................................................................1
Applications ....................................................................................................................................................................................1
Key Specifications ..........................................................................................................................................................................1
Package..........................................................................................................................................................................................1
Typical Application Circuit ...............................................................................................................................................................1
Contents .........................................................................................................................................................................................2
Pin Configuration ............................................................................................................................................................................3
Pin Descriptions..............................................................................................................................................................................3
Block Diagram ................................................................................................................................................................................4
Description of Pin Function .............................................................................................................................................................5
Absolute Maximum Ratings ............................................................................................................................................................8
Thermal Resistance........................................................................................................................................................................8
Recommended Operating Conditions .............................................................................................................................................8
Electrical Characteristics.................................................................................................................................................................9
Typical Performance Curves......................................................................................................................................................... 11
List of Protection Detection Condition...........................................................................................................................................12
List of Protection Function Operation............................................................................................................................................12
Timing Chart .................................................................................................................................................................................13
Application Examples ...................................................................................................................................................................19
Selection of Components Externally Connected...........................................................................................................................20
I/O Equivalent Circuits ..................................................................................................................................................................28
Operational Notes.........................................................................................................................................................................29
Ordering Information.....................................................................................................................................................................31
Marking Diagram ..........................................................................................................................................................................31
Physical Dimension and Packing Information ...............................................................................................................................32
Revision History............................................................................................................................................................................33
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
2/33
TSZ02201-0T2T0B500280-1-2
16.May.2018 Rev.001





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