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PDF BD9413F Data sheet ( Hoja de datos )
| Número de pieza | BD9413F | |
| Descripción | White LED Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
LED Drivers for LCD Backlights
1ch Boost up type
White LED Driver for large LCD
BD9413F
1.1 General Description
BD9413F is a high efficiency driver for white LEDs and is
designed for large LCDs. BD9413F has a boost DCDC
converter that employs an array of LEDs as the light
source.
BD9413F has some protect functions against fault
conditions, such as over-voltage protection (OVP), over
current limit protection of DCDC (OCP), LED OCP
protection, and Over boost protection (FBMAX).
Therefore it is available for the fail-safe design over a
wide range output voltage.
Key Specifications
Operating power supply voltage range: 9.0V to 35.0V
Oscillator frequency of DCDC: 150kHz (RT=100kΩ)
Operating Current:
3.3 mA(Typ.)
Operating temperature range:
-40°C to +105°C
1.2 Package(s)
SOP18
W(Typ) x D(Typ) x H(Max)
11.20mm x 7.80mm x 2.01mm
Pin pitch 1.27mm
Features
DCDC converter with current mode
LED protection circuit (Over boost protection, LED
OCP protection)
Over-voltage protection (OVP) for the output voltage
Vout
Adjustable soft start
Adjustable oscillation frequency of DCDC
Wide range of analog dimming 0.2V to 3.0V
UVLO detection for the input voltage of the power
stage
LED Dimming PWM Over Duty Protection(ODP)
Applications
TV, Computer Display, LCD Backlighting
Figure 1. SOP18
Typical Application Circuit
VCC VIN
Vout
VCC UVLO OVP
REG90
STB
GATE
RT
SS CS
FAILB
PWM
DIMOUT
ADIM
ISENSE
DUTYP
DUTYON
GND
FB
Rs
Figure 2. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has not designed protection against radioactive rays
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TSZ02201-0F2F0C100120-1-2
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1 page  
BD9413F
Datasheet
1.8 Electrical Characteristics 2/2 (Unless otherwise specified VCC=24V Ta=25°C)
Parameter
Symbol
Min Typ Max Unit
【DC/DC Block】
FB Source Current
IFBSO
-115 -100 -85
μA
FB Sink Current
【DC/DC Protection Block】
OCP Detect Voltage
OCP Latch Off Detect Voltage
OVP Detect Voltage
OVP Detect Hysteresis
OVP Pin Leak Current
【LED Protection Block】
LED OCP Detect Voltage
Over Boost Detection Voltage
【Dimming Block】
ADIM Pin Leak Current
ISENSE Pin Leak Current
DIMOUT Source ON
Resistance
DIMOUT Sink ON Resistance
【REG90 Block】
REG90 Output Voltage 1
REG90 Output Voltage 2
REG90 Available Current
REG90_UVLO Detect Voltage
IFBSI
85 100 115
VCS
360 400 440
VCS
0.85 1.00 1.15
VOVP
2.88 3.00 3.12
VOVP_HYS 150 200 250
OVP_LK -2 0 2
VLEDOCP
VFBH
2.88 3.00 3.12
3.84 4.00 4.16
ILADIM
-2 0 2
IL_ISENSE
-2
0
2
RONSO
5.0 10.0 20.0
RONSI
4.0 8.0 16.0
REG90_1
REG90_2
| IREG90 |
8.91 9.00 9.09
8.865 9.00 9.135
15 -
-
REG90_TH 5.22 6.00 6.78
μA
mV
V
V
mV
μA
V
V
μA
μA
Ω
Ω
V
V
mA
V
REG90 Discharge Resistance REG90_DIS 13.2 22.0 30.8
V
【STB Block】
STB Pin HIGH Voltage
STBH
2.0 - 18 V
STB Pin LOW Voltage
STBL
-0.3 - 0.8 V
STB Pull Down Resistance
RSTB
600 1000 1400 kΩ
【PWM Block】
PWM Pin HIGH Voltage
PWM_H 1.5 - 18 V
PWM Pin LOW Voltage
PWM_L -0.3 - 0.8 V
PWM Pin Pull Down Resistance
RPWM
600 1000 1400
kΩ
【DUTYON Block】
DUTYON Pin HIGH Voltage
DTYON_H
1.5
-
18
V
DUTYON Pin LOW Voltage
DTYON_L
-0.3
-
0.8
V
DUTYON Pin Pull Down
Resistance
RDTYON
600 1000 1400
kΩ
【Over Duty Protection Block】
PWM ODP Protection Detect
Duty
DODP
- 35 - %
DUTYP Short Protection Range DTYP_DET -0.3
-
VDUTYP
×90%
V
DUTYP Terminal Voltage
VDTYP
1.6 2.0 2.4
V
【Filter Block】
Abnormal Detection Timer
tCP - 20 - ms
AUTO Timer
tAUTO
- 163 -
ms
【FAILB Block 】
FAILB Pin LOW Voltage
VFAILBL
0.25 0.5
1.0
V
Conditions
VISENSE=0.2V, VADIM=3.0V,
VFB=1.0V
VISENSE=2.0V, VADIM=3.0V,
VFB=1.0V
CS=SWEEP UP
CS=SWEEP UP
VOVP SWEEP UP
VOVP SWEEP DOWN
VOVP=4.0V, VSTB=3.0V
VISENSE=SWEEP UP
VFB=SWEEP UP
VADIM=2.0V
VISENSE=4.0V
IO=0mA
IO=-15mA
VREG90=SWEEP DOWN,
VSTB=0V
STB=ON->OFF, REG90=8.0V,
PWM=L
VSTB=3.0V
VPWM=3.0V
VDUTYON=3.0V
FPWM=120Hz, DUTYP=341kΩ
DUTYP=SWEEP DOWN
DUTYP=100kΩ
FCT=800kHz
FCT=800kHz
IFAIL=1mA
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/33
TSZ02201-0F2F0C100120-1-2
28.Dec.2015 Rev.001
5 Page 
BD9413F
3.1 Application Circuit Example
Introduce an example application using the BD9413F.
3.1.1 Basic Application Example
VCC VIN
Datasheet
Vout
VCC UVLO OVP
REG90
STB
GATE
RT
SS CS
FAILB
PWM
DIMOUT
ADIM
ISENSE
DUTYP
DUTYON
GND
FB
Rs
Figure 14. Basic application example
3.1.2 Analog Dimming or PWM Dimming Examples
VCC
VIN
Vout
VCC
VIN
Vout
REG90
VCC UVLO OVP
REG90
STB
GATE
RT
SS CS
FAILB
PWM
ADIM
DIMOUT
ISENSE
DUTYP
DUTYON
GND
FB
OP EN
Rs
Figure 15. Example circuit for analog dimming
REG90
VCC UVLO OVP
REG90
STB
GATE
RT
CS
SS
FAILB
PWM
DIMOUT
ADIM
ISENSE
DUTYP
DUTYON
GND
FB
Figure 16. Example circuit for PWM dimming
Rs
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/33
TSZ02201-0F2F0C100120-1-2
28.Dec.2015 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD9413F.PDF ] | |
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