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BD9412F PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD9412F
기능 White LED Driver
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BD9412F 데이터시트, 핀배열, 회로
Datasheet
PFC Direct current resonance type
White LED Driver for Large LCD
BD9412F
General Description
BD9412F 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).
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
Key Specifications
Operating Power Supply Voltage Range:
9.0V to 18.0V
Oscillator Frequency:
Operating Current:
60kHz (RRT=100kΩ)
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.
Figure. 1 SOP18
Typical Application Circuit
VCC
GND
PDIM
STB
PWM
GND
ERR
VCC
PDIM
ON/OFF
PWMIN
FAIL
< Primary Side >
PVIN
GND
T1
PDIM
FAIL
5V
VCC
ON/OFF
PWMIN
BD9412F
< Secondary Side >
Figure. 2 Typical Application Circuit(s)
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product has no designed protection against radioactive rays
1/24
TSZ02201-0F5F0C100070-1-2
12.Aug.2015 Rev.002




BD9412F pdf, 반도체, 판매, 대치품
BD9412F
Electrical Characteristics (Unless otherwise specified Ta=25°C, VCC=12V)
Parameter
Symbol
Limit
Min Typ Max
Whole Device
Circuit Current
ICC1 2.3 5.0
Circuit Current at Stand-by
STB Block
STB Pin High Voltage
STB Pin Low Voltage
VCC UVLO Block
VCC Operation Voltage
VCC UVLO Hysteresis
OSC Block
RT Terminal voltage
PWMIN Block
PWMIN Pin High Voltage
PWMIN Pin Low Voltage
Soft Start Block
Setting Current for Soft Start Timer
and COMPSD Timer
Soft Start Ended Voltage
Setting Voltage for COMPSD
Timer
Feed Back Block
ICC2
VSTH
VSTL
VVCCUVP
VVCCUVP
VRT
VPWMINH
VPWMINL
ISS
VSSEND
VSDON
2.0
-0.3
7.5
0.37
1.05
1.8
-0.3
1.5
2.30
1.90
0
8.0
0.50
1.50
-
-
20
VCC
+0.8
8.5
0.63
1.95
5.0
+0.8
2.0 2.5
2.50 2.70
2.00 2.10
IS Threshold Voltage 1
VIS1
0.466
0.477 0.488
IS Threshold Voltage 2
VIS2
0.239
0.250 0.261
IS Threshold Voltage 3
IS Threshold Voltage 4
IS Source Current 1
IS Source Current 2
VS Source Voltage
IS COMP Detection Voltage 1
IS COMP Detection Voltage 2
VIS3
VVS
IIS1
IIS2
IVS
VISCOMP1
VISCOMP2
0.102
1.212
40
0.020
0.90
0.114
1.250
50
0.050
1.00
0.126
1.288
0.9
60
0.9
0.080
1.10
Unit Conditions
mA
fOUT=60kHz,
VPWMCOMP=0V
µA VSTB=0V
V System ON
V System OFF
V
V
V
V
V
µA
V
V
V
VADIM=2.1V,
VPWM2DC=12V
V
VADIM=1.1V,
VPWM2DC=12V
V
VADIM=0.5V,
VPWM2DC=12V
V
µA VPWMIN=2.5V
µA VPWMIN=0V, VIS=0.8V
µA
V
IS sweep down
VADIM=0.4V
V IS sweep up
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
4/24
TSZ02201-0F5F0C100070-1-2
12.Aug.2015 Rev.002

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BD9412F 전자부품, 판매, 대치품
BD9412F
I/O Equivalent Circuits
STB
VCC
STB
160KΩ
300KΩ
GND
130KΩ
50KΩ
GND
GND GND
IS
REF
VCC
1KΩ
IS
10KΩ
REF REF
GND GND
GND
CP
GND
REF
REF VCC
350Ω
CP
GND GND
GND
SS
REF
REF VCC
350Ω
SS
GND GND
GND
PWM2DC
REF REF
PWM2DC
100KΩ
400KΩ
100KΩ
GND
GND
GND
GND
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
RT
REF REF
VCC
RT
GND
GND
VS
REF
100KΩ
VS
GND
GND
PWMIN
VCC
PWMIN
100KΩ
GND
GND
GND
FAIL
FB
10KΩ
REF
20Ω
FB
GND
GND
GND
GND
PWMCMP
REF
REF
GND
GND
GND
REF
10KΩ
REF
20Ω
100kΩ
PWMCMP
GND
GND
GND
GND
ADIM
100KΩ
2.2V
REF
ADIM
GND
100KΩ GND
GND
GND
GND
COMPSD
REF
50Ω
FAIL
COMP
100KΩ
GND
GND
N2
VCC
VCC
90KΩ
N2
PGND PGND PGND
Figure. 5 I/O equivalent circuit
7/24
GND GND
N1
GND
VCC
VCC
90KΩ
N1
PGND PGND PGND
TSZ02201-0F5F0C100070-1-2
12.Aug.2015 Rev.002

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