BD9394FP Datasheet PDF - ROHM Semiconductor
| Part Number | BD9394FP | |
| Description | LED Drivers | |
| Manufacturers | ROHM Semiconductor | |
| Logo |  |
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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
1/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com
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BD9394FP, BD9394EFV
Datasheet
●Pin Descriptions (BD9394FP)
Pin No
Pin Name
In/Out
1
AUTO
Out
2
REG58
Out
3 CS In
4 N In
5 DCDC_GND -
FIN1
GND
-
6 LSP In
7 OVP In
8
LED1
Out
9
LED2
Out
10 LED_GND
-
11 STB In
12
LED3
Out
13
LED4
Out
14 PWM In
15
ISET
Out
FIN2
GND
-
16 SS Out
17 FB In/Out
18 RT Out
19 NADIM In
20 VCC In
●Pin Descriptions (BD9394EFV)
Pin No
Pin Name
In/Out
1
AUTO
Out
2
REG58
Out
3 CS In
4 N In
5 DCDC_GND -
6 LSP In
7 OVP In
8
LED1
Out
9
LED2
Out
10 N.C.
-
11 LED_GND
-
12 N.C.
-
13 STB In
14
LED3
Out
15 N.C.
-
16
LED4
Out
17 PWM In
18
ISET
Out
19 GND
-
20 SS Out
21 FB In/Out
22 RT Out
23 NADIM In
24 GND
-
Function
Auto-restart time setting pin
Power supply for N pin
DC/DC output current detection and OCP detection pin
DC/DC switching output pin
Power GND pin
Analog GND pin
LED Short detection voltage setting resistor connection pin
Overvoltage protection detection pin
Output pin 1 for LED
Output pin 2 for LED
Ground pin for LED
Enable pin
Output pin 3 for LED
Output pin 4 for LED
External PWM light modulation signal input pin for LED1-4
LED current setting resistor connection pin
Analog GND pin
Soft start pin / LED protection masking time setting pin.
Error amp output pin
DC/DC drive frequency setting resistor connection pin.
Analog dimming DC voltage input pin
Power supply pin
Function
Auto-restart time setting pin
Power supply for N pin
DC/DC output current detection and OCP detection pin
DC/DC switching output pin
Power GND pin
LED Short detection voltage setting resistor connection pin
Overvoltage protection detection pin
Output pin 1 for LED
Output pin 2 for LED
Unconnected pin.
Ground pin for LED
Overvoltage protection detection pin.
Enable pin
Output pin 3 for LED
DC/DC switching output pin.
Output pin 4 for LED
External PWM light modulation signal input pin for LED1-4
LED current setting resistor connection pin
Analog GND pin
Soft start pin / LED protection masking time setting pin.
Error amp output pin
DC/DC drive frequency setting resistor connection pin.
Analog dimming DC voltage input pin
Ground pin for analog block.
Rating [V]
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
-
-
-0.3 ~ 7
-0.3 ~ 36
-0.3 ~ 60
-0.3 ~ 60
-
-0.3 ~ 36
-0.3 ~ 60
-0.3 ~ 60
-0.3 ~ 36
-0.3 ~ 7
-
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 36
-0.3 ~ 36
Rating [V]
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
-
-0.3 ~ 7
-0.3 ~ 36
-0.3 ~ 60
-0.3 ~ 60
-
-
-
-0.3 ~ 36
-0.3 ~ 60
-
-0.3 ~ 60
-0.3 ~ 36
-0.3 ~ 7
-
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 36
-
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/28
TSZ02201-0F1F0C100180-1-2
09.Nov.2012 Rev.002
http://www.Datasheet4U.com
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BD9394FP electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ BD9394FP.PDF Datasheet ] | |
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