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BD9394EFV PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD9394EFV
기능 LED Drivers
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BD9394EFV 데이터시트, 핀배열, 회로
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:
-40to +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 structureSilicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com




BD9394EFV pdf, 반도체, 판매, 대치품
BD9394FP, BD9394EFV
Datasheet
Electrical Characteristics (Unless otherwise noted, Ta = 25oC, VCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
[DC/DC Protection Block]
Overvoltage protection detection
voltage
Overvoltage protection detection
hysteresis voltage
Short circuit protection detection
voltage
[LED Driver Block]
VOVP
VOVP_HYS
VSCP
2.7
50
0.04
3.00
100
0.10
3.3
200
0.25
LED pin current accuracy 1
dILED1
-2
-
2
LED pin current accuracy 2
dILED2
LED pin Leakage Current
LED open detection voltage
ILLED
VOPEN
LED short detection voltage
VSHORT
LSP pin resistive divider upper side
resistance
LSP pin resistive divider lower side
resistance
NADIM pin Input Current
[STB Block]
RULSP
RDLSP
ILNADIM
STB pin high-level voltage
STBH
STB pin low-level voltage
STBL
STB pin pull-down resistance
RSTB
[PWM Block]
PWM pin high-level voltage
PWMH
PWM pin low-level voltage
PWML
PWM pin pull-down resistance
RPWM
[Failure Indication Block (Open Drain)]
AUTO pin source current
IAUTO
AUTO pin Detection Voltage
VAUTO
Abnormal Detection Timer
tCP
-3
-2.5
0.05
4
1000
500
-2.5
-
-
0.2
5
2000
1000
-
3
2.5
0.285
6
3000
1500
2.5
2 - 35
-0.3 - 0.8
500 1000 1500
2 - 35
-0.3 - 0.8
180 300 420
-2 -1 -0.5
3.6 4.0 4.4
20
Unit Condition
V VOVP=SWEEP UP
mV VOVP=SWEEP DOWN
V VOVP=SWEEP DOWN
%
ILED=100mA,
(VNADIM=2.62V,RISET=75kΩ)
%
ILED=100mA,
(VNADIM=7V,RISET=75kΩ)
uA VLED=60V
V VLED=SWEEP DOWN
V VLED=SWEEP UP,
VLSP=OPEN
kVLSP=0V
kVLSP=3V
uA VNADIM=5V
V STB=SWEEP UP
V STB=SWEEP DOWN
kVSTB=3.0V
V PWM=SWEEP UP
V PWM= SWEEP DOWN
kPWM=3.0V
µA VAUTO=2V
V VAUTO=SWEEP UP
ms RT=75k
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com

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BD9394EFV 전자부품, 판매, 대치품
BD9394FP, BD9394EFV
Block Diagram
Datasheet
Fig. 6 Block Diagram
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com

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