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BD9394EFVのメーカーはROHM Semiconductorです、この部品の機能は「LED Drivers」です。 |
部品番号 | BD9394EFV |
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部品説明 | LED Drivers | ||
メーカ | ROHM Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとBD9394EFVダウンロード(pdfファイル)リンクがあります。 Total 30 pages
Datasheet
LED Drivers for LCD Backlights
White LED Driver for large LCD
Panels (DCDC Converter type)
BD9394FP, BD9394EFV
●General Description
BD9394FP, BD9394EFV is a high efficiency driver for
white LEDs and designed for large LCDs. This IC is
built-in a boost DCDC converters that employ an array of
LEDs as the light source. BD9394FP, BD9394EFV has
some protect function against fault conditions, such as
the over-voltage protection (OVP), the over current limit
protection of DCDC (OCP), the short circuit protection
(SCP), the open detection of LED string. Therefore
BD9394FP, BD9394EFV is available for the fail-safe
design over a wide range output voltage.
●Key Specification
Operating power supply voltage range: 9.0V to 35.0V
LED minimum current
30mA
LED maximum current:
150mA
Oscillator frequency:
150kHz (RT=100kΩ)
Operating Current:
4.5mA (Typ.)
Operating temperature range:
-40℃ to +85℃
●Applications
TV, Computer Display, Notebook, LCD Backlighting
●Features
4ch LED constant current driver and DC/DC converter
Maximum LED Current: 150mA
LED Feedback Voltage: 0.37V (@NADIM=2.62V),
so lower heat. Adjustable Feed Back Voltage
by following LED Current setting.
±2% LED current accuracy (NADIM=2.62V,
when each LED is set to 100mA)
Analog current (Linear) dimming at NADIM pin
LED pin rating 60V
Individual detection and individual LED OFF for both
open and short circuits
Built-in ISET pin short-circuit protection circuit
Set Soft-Start time by external capacitor.
FET’s Gate (N pin) is driven by 5.8V swing
Built-in Vout discharge circuit for shutdown
Built-in Vout overvoltage protection (OVP) /
reduced voltage protection (SCP) circuit
Adjustable LED Short Protection Voltage
by LSP terminal
HSOP20, HTSSOP-B24 package with high heat
radiation efficiency
●Package
HSOP20
HTSSOP-B24
W(Typ.) x D(Typ.) x H(Max.)
14.90mm x 7.80mm x 2.10mm
7.80mm x 7.60mm x 1.00mm
● Typical Application Circuit (4 light with PWM)
VIN
VIN
Inductor
Diode
Fig.1(a) HSOP20
CIN
FET
PGND
AGND
REG58
COUT
REG58
CREG
RN2
RCS DN RN1
RRT
ROVP1
ROVP2
COVP
RFB CFB1
RLSP1
RLSP2
CFB2
CLSP
CSS
RISET
CAUTO
NADIM
FIN1, 2
REG58
N
DCDC_GND
CS
RT
OVP
FB
LSP
SS
ISET
AUTO
NADIM
STB
VCC
LED4
LED3
LED_GND
LED2
LED1
PWM
AGND
ON/OFF
RVCC
CVCC
CLED4
CLED3
CLED2
CLED1
PWM
Fig.1(b) HTSSOP-B24
Fig.2 Typical Application Circuit
○Product structure:Silicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
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TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com
1 Page BD9394FP, BD9394EFV
●Marking diagram and physical dimension
HSOP20
BD9394FP
LOT No.
HTSSOP-B24
Datasheet
LOT No.
D9394EFV
Fig.4 Physical Dimension
●Electrical Characteristics (Unless otherwise noted, Ta = 25oC, VCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
[Whole Device]
Circuit current while in operation
Circuit current while in standby
[REG58 Block]
ICC
ISTB
- 4.5 9
- 40 80
REG58 Output Voltage
REG58
5.742 5.8 5.858
Soft start completion voltage
[UVLO Block]
IREG58 15 -
-
UVLO release voltage
VUVLO_VCC
6.5
7.5
8.5
UVLO hysteresis voltage
VUHYS_VCC
150
300
600
[DC/DC Block]
Error amp. Reference voltage
Oscillation frequency
VLED
fsw
0.35
142.5
0.37
150.0
0.39
157.5
Max. duty cycle per output of N pin
DMAX
83 90 97
On resistance on N pin source side
On resistance on N pin sink side
SS pin source current
RONH
RONL
ISSSO
- 48
- 36
-4 -2 -1
Soft start completion voltage
VSS_END
3.3
3.7
4.1
FB sink current
FB source current
Over current detection voltage
IFBSINK
IFBSOURCE
VCS
50
-150
0.40
100
-100
0.45
150
-50
0.50
Unit Condition
mA STB=3V,PWM=3V,RT=100kΩ
µA STB=0V
V IO=0mA
mA
V VCC=SWEEP UP
mV VCC=SWEEP DOWN
V ISET=75kΩ, NADIM=2.62V
kHz RT=100kohm
% RT=100kohm
Ω ION=-10mA
Ω ION=10mA
uA VSS=2V
V SS=SWEEP UP
µA LED=2.0V, VFB=1.0V
µA LED=0V, VFB=1.0V
V CS=SWEEP UP
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com
3Pages BD9394FP, BD9394EFV
●Pin ESD Type
REG58 / N / DCDC_GND / CS
NADIM
Datasheet
FB
FB
LED1~4, LED_GND
LED1-4
LED_GND
PWM
OVP
RT
ISET
AUTO
AUTO
Fig. 5 Pin ESD Type
SS
LSP
3V
1.8M
100k
LSP
5V 1.2M
STB
STB
100k
5V 1M
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
6/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com
6 Page | |||
ページ | 合計 : 30 ページ | ||
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部品番号 | 部品説明 | メーカ |
BD9394EFV | LED Drivers | ROHM Semiconductor |