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BD94121F-E2

Description
LED Driver
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size3MB,27 Pages
ManufacturerROHM Semiconductor
Websitehttps://www.rohm.com/
Download Datasheet Parametric View All

BD94121F-E2 Overview

LED Driver

BD94121F-E2 Parametric

Parameter NameAttribute value
MakerROHM Semiconductor
Reach Compliance Codecompliant
Interface integrated circuit typeLED DISPLAY DRIVER
Datasheet
PFC Direct current resonance type
White LED Driver for Large LCD
BD94121F
General Description
BD94121F 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, LED Short
Detection (IS High Detection) and LED Open Detection
(IS Low Detection).
Key Specifications
Operating Power Supply Voltage Range:
9.0V to 18.0V
Minimum Oscillator Frequency:
67kHz
(R
RT
=27kΩ,R
ADJ
=44kΩ,V
FB
=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
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
Analog Dimming by External DC Signal
Conversion Function from Pulse to DC
TV, Computer Display, LCD Backlighting.
Applications
Figure. 1 SOP18
Typical Application Circuit
< Primary Side >
VCC
VCC
GND
PDIM
STB
GND
PDIM
ON/OFF
PVIN
GND
PWM
ERR
PWMIN
FAIL
T1
PDIM
C
SS
C
SDON
C
FBVS
R
ADJ
R
RT
R
FBVS
R
FBIS
C
CP
C
FBIS
R
S
< Secondary Side >
Figure. 2 Typical Application Circuit(s)
〇Product
structure : Silicon monolithic integrated circuit
.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This
product has no designed protection against radioactive rays
1/24
TSZ02201-0F5F0C100100-1-2
22.Feb.2016 Rev.001

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