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BD9394FP PDF даташит

Спецификация BD9394FP изготовлена ​​​​«ROHM Semiconductor» и имеет функцию, называемую «LED Drivers».

Детали детали

Номер произв BD9394FP
Описание LED Drivers
Производители ROHM Semiconductor
логотип ROHM Semiconductor логотип 

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BD9394FP Даташит, Описание, Даташиты
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
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BD9394FP Даташит, Описание, Даташиты
BD9394FP, BD9394EFV
Datasheet
Absolute maximum ratings (Ta=25)
Parameter
Symbol
Ratings
Unit
Power supply voltage
VCC
36 V
STB, NADIM, OVP, PWM terminal voltage
STB, NADIM, OVP, PWM
VCC
V
LED1 to 4 terminal voltage
AUTO, REG58, CS, N, LSP, ISET, SS, FB, RT
terminal voltage
Power dissipation 1(HSOP20)
LED1~4
AUTO, REG58, CS, N, LSP,
ISET, SS, FB, RT
Pd1
60
7
2.18 *1
V
V
W
Power dissipation 2(HTSSOP-B24)
Pd2
4.00 *2
W
Operating temperature range
Topr
-40~+85
Storage temperature range
Tstg
-55~+150
Junction temperature
Tjmax
150
*1 Ta = 25°C or more, diminished at -17.4mW/°C in the case of HSOP20 (when 4-layer / 70.0 mm x 70.0 mm x 1.6 mm board is mounted)
*2 Ta = 25°C or more, diminished at -32.0mW/°C in the case of HTSSOP-B24 (when 4-layer / 70.0 mm x 70.0 mm x 1.6 mm board is mounted)
Operating Ratings (Ta = 25)
Parameter
Symbol
Limits
Unit
VCC supply voltage
VCC
9.0~35.0
V
Min. output current of LED1 to 4
Max. output current of LED1 to 4
Min. output current of LED1 to 4
ILED_MIN
ILED_MAX
VNADIM1
30
150
0~5.0 *3
mA *1
mA
*1,2
V
Max. output current of LED1 to 4
VNADIM2
7.0~35.0
V
DC/DC oscillation frequency
VLSP
0.83.0
V
DC/DC oscillation frequency
Fsw
100~800
kHz
Min. on-duty time for PWM light modulation
PWM_MIN
30 us
*1 The amount of current per channel.
*2 If LED makes significant variations in its reference voltage, the driver will increase power dissipation, resulting in a rise in package temperature.
To avoid this problem, design the board with thorough consideration given to heat radiation measures.
*3 The range which the LED current changes with linearity is from 1.5V to 5V.
Pin Configuration
HSOP20
1 AUTO
2 REG58
3 CS
4N
5 DCDC_GND
VCC
NADIM
RT
FB
SS
20
19
18
17
16
HTSSOP-B24
6 LSP
7 OVP
8 LED1
9 LED2
10 LED_GND
ISET
PWM
LED4
LED3
STB
15
14
13
12
11
Fig.3 Pin Configuration
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com









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BD9394FP Даташит, Описание, Даташиты
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=100k
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
ION=-10mA
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.
TSZ2211115001
3/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com










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