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Rohm Semiconductor Electronic Components Datasheet

BD92111F Datasheet

White LED Driver

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Datasheet
PFC Direct current resonance type
White LED Driver for Large LCD
BD92111F
General Description
BD92111F is a current resonance type LED Driver with
frequency-controlled LED current. It can connect to PFC
directly and can use half-bridge structure reducing the
number of external components.
It incorporates some protection functions against fault
conditions such as Over-Voltage Protection and LED
Open Detection (IS Low Detection).
Features
20V High Rating Process
1 Channel Push-pull Control
Current and Voltage Feedback by Driving
Frequency
Adjustable Soft Start
Adjustable Timer Latch
Under-Voltage Detection for IC’s Power Line
Output Over-Voltage Protection
Output Error Signal from FAIL Terminal
Shift to Save Mode by STB Terminal
Burst Control by External PWM Signal
Key Specifications
Operating Power Supply Voltage Range:
8.0V to 18.0V
Minimum Oscillator Frequency:
65.8kHz
(RRT=22kΩ,RADJ=36kΩ,VFB=3.2V)
Operating Current:
2.3mA (Typ)
Operating Temperature Range: -40°C to +85°C
Package
SOP18
W(Typ) x D(Typ) x H(Max)
11.20mm x 7.80mm x 2.01mm
Pin pitch 1.27mm
Applications
TV, Computer Display, LCD Backlighting.
Typical Application Circuit
VCC
GND
PDIM
STB
PWM
GND
ERR
VCC
PDIM
ON/OFF
PWMIN
FAIL
< Primary Side >
PVIN
GND
T1
Figure. 1 SOP18
CSS CSDON
RADJ
CFBV S
CFBIS
RRT
RFBV S
RFBIS
CCP
RS
< Secondary Side >
Figure. 2 Typical Application Circuit(s)
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product has no designed protection against radioactive rays
1/24
TSZ02201-0F5F0C100090-1-2
31.Jan.2016 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BD92111F Datasheet

White LED Driver

No Preview Available !

BD92111F
Contents
General Description....................................................................................................................................................1
Features .......................................................................................................................................................................1
Applications ................................................................................................................................................................1
Key Specifications ......................................................................................................................................................1
Package .......................................................................................................................................................................1
Typical Application Circuit.........................................................................................................................................1
Absolute Maximum Ratings.......................................................................................................................................3
Recommended Operating Conditions ......................................................................................................................3
External Components Recommended Range..........................................................................................................3
Pin Configuration........................................................................................................................................................3
Physical Dimension and Marking Diagram ..............................................................................................................3
Electrical Characteristics...........................................................................................................................................4
Pin Description............................................................................................................................................................6
I/O Equivalent Circuits................................................................................................................................................7
Block Diagram.............................................................................................................................................................8
Typical Performance Curves .....................................................................................................................................9
Pin Function Description .........................................................................................................................................10
Detection Condition List of the Protection Functions ..........................................................................................15
Behavior List of the Protect Function ....................................................................................................................15
Application Example ................................................................................................................................................16
Timing Chart..............................................................................................................................................................17
Operational Notes .....................................................................................................................................................20
Ordering Information ................................................................................................................................................22
Marking Diagrams.....................................................................................................................................................22
Physical Dimension, Tape and Reel Information...................................................................................................23
Revision History .......................................................................................................................................................24
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
2/24
TSZ02201-0F5F0C100090-1-2
31.Jan.2016 Rev.001


Part Number BD92111F
Description White LED Driver
Maker ROHM
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