Datasheet.kr   

BD9421F PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD9421F
기능 LED Drivers
제조업체 ROHM
로고 ROHM 로고 



전체 30 페이지

		

No Preview Available !

BD9421F 데이터시트, 핀배열, 회로
Datasheet
LED Drivers for LCD Backlights
White LED Driver for large LCD Panels
(DCDC Converter Type)
BD9421F
General Description
BD9421F is high efficiency driver for white LED. This is
designed for large sized LCD. BD9421F is built-in
DCDC converters that supply appropriate voltage for
light source.
BD9421F is also built-in protection function for
abnormal state such as OVP: over voltage protection,
OCP: over current limit protection of DCDC, SCP: short
circuit protection, open detection of LED string.
Thus this is used for conditions of large output voltage
and load conditions.
Features
6ch LED constant current driver(External PNP Tr
Type)
Maximum LED setting current 500mA(VREF Pin
setting)
±2% LED current accuracy(VREF=0.9V setting)
Built-in DC/DC converter
Analog Dimming(Linear) function
LED protection function(OPEN/SHORT
protection)[PWM-independent Type]
Individual detection and individual LED OFF for both
OPEN and SHORT circuit
VOUT Over Voltage Protection(OVP) and reduced
voltage protection(SCP) circuit
Built-in under voltage lockout function(UVLO) and
over voltage protection(OVP)
Built-in VOUT discharge circuit while shutdown
Key Specifications
VCC Supply Voltage Range:
9.0V to 35.0V
DCDC Oscillation Frequency: 150kHz(RT=100k)
Operation Circuit Current:
5mA(Typ)
Operating Temperature Range: -40°C to +85°C
Applications
LED driver for TV, Monitor and LCD Back Light
Package
SOP24
W(Typ) x D(Typ) x H(Max)
15.00mm x 7.80mm x 2.01mm
Pin Pitch 1.27mm
Figure 1. SOP24
Typical Application Circuit
Figure 2. Typical Application Circuit
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
This product has no designed protection against radioactive rays
1/27
TSZ02201-0F1F0C100310-1-2
31.Jan.2014 Rev.002
http://www.Datasheet4U.com




BD9421F pdf, 반도체, 판매, 대치품
BD9421F
Datasheet
Electrical Characteristics(Unless otherwise specified VCC=24V Ta=25°C)
Parameter
Symbol
Min.
Limit
Typ.
Max.
[LED Protection Block]
LED OPEN Detect Voltage
LED SHORT Detect Voltage
CL Pin Low Detect Voltage
[REG75 Block]
VOPEN
VLSP
VCLLVP
0.05 0.10 0.15
8.5 9.0 9.5
0.05 0.10 0.15
REG75 Output Voltage
REG75 MAX Output Current
REG75_UVLO Detect Voltage
REG75
| IREG75 |
7.425 7.50 7.575
10
-
REG75_TH
3.6
4.0
4.4
REG75_UVLO Hysteresis
REG75_HYS
250
500
750
REG75 Discharge Resistance
REG75_DIS 0.65 1.00 1.35
[STB Block]
STB Pin High Voltage
STB Pin Low Voltage
STB Pin Pull Down Resistance
[PWM Input Block]
STBH
STBL
RSTB
2.0 - VCC
-0.3 - 0.8
600
1000
1400
PWM Pin High Detect Voltage
PWM Pin Low Detect Voltage
PWM Pin Pull Down Resistance
PWM_H
PWM_L
RPWM
1.5 - 18
-0.3 -
0.8
300 500 700
Unit Condition
V BSx=SWEEP DOWN
V BSx=SWEEP UP
V
V Io=0mA
mA
V REG75=SWEEP DOWN
mV
STB=ON->OFF,
REG75=SWEEP UP
M
STB=ON->OFF,
REG75=7.5V
V STB=SWEEP UP
V STB=SWEEP DOWN
kSTB=3.0V
V PWM=SWEEP UP
V PWM=SWEEP DOWN
kPWM=3.0V
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
4/27
TSZ02201-0F1F0C100310-1-2
31.Jan.2014 Rev.002
http://www.Datasheet4U.com

4페이지










BD9421F 전자부품, 판매, 대치품
BD9421F
Pin ESD Type
REG75 / N / PGND / CS
Datasheet
PWM
FB STB VREF
BS(1-6) / CL(1-6)
OVP
OVP
RT
Figure 6. Pin ESD Type
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
7/27
TSZ02201-0F1F0C100310-1-2
31.Jan.2014 Rev.002
http://www.Datasheet4U.com

7페이지



구       성총 30 페이지
다운로드[ BD9421F.PDF 데이터시트 ]
구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
BD9421F

LED Drivers

ROHM
ROHM

DataSheet.kr    |   2019   |  연락처   |  링크모음   |   검색  |   사이트맵