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Rohm Semiconductor Electronic Components Datasheet

BD8374EFJ-M Datasheet

50V 500mA 1ch Source Driver

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Datasheet
Constant Current LED Drivers
50V 500mA
1ch Source Driver for Automotive
BD8374HFP-M BD8374EFJ-M
General Description
BD8374HFP-M and BD8374EFJ-M are 50V-withstanding
LED source drivers. Most suitably for Automotive
LED driving, it can control light through PWM of constant
current output.
Having LED open/short detective circuit and overvoltage
mute functions integrated, it can deliver high reliability.
Also by utilizing our patented PBUS function, it is possible
to turn OFF all LEDs in case where a row of LEDs are
short/open-circuited if multiple rows of LEDs are driven
through multiple number of the ICs.
Key Specifications
Input Voltage Range: 4.5V to 42V
Max Output Current: 500mA (Max)
Output Current Accuracy: ±5% (Max)
Operating Temperature Range: -40°C to +125°C
Packages
HRP7
HTSOP-J8
W(Typ) x D(Typ) x H(Max)
9.395mm x 10.540mm x 2.005mm
4.90mm x 6.00mm x 1.00mm
Features
AEC-Q100 Qualified
Variable form Constant-Current Source Driver
PWM Dimming Function
CR Timer for PWM Dimming Function Integrated
LED Open/Short detective Circuit Function Integrated
Overvoltage Mute and Temperature Protection
Functions Integrated
Abnormal Output Detection and Output Functions
(PBUS)
Application
On-board Exterior Lamp
(Rear Lamp, Turn Lamp, DRL/Position Lamp,
Fog Lamp, etc.)
On-board Interior Lamp
(Air Conditioner Lamp, Interior Lamp,
Cluster Light, etc.)
HRP7
HTSOP-J8
Basic Application Circuit
VIN_F
VIN
IOUT
CRT BD8374HFP-M
BD8374EFJ-M
DISC
FIN
PBUS
GND
Figure 1. Typical Application Circuit
Product configuration: Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
The product is not designed for radiation resistance.
1/29
TSZ02201-0G1G0C700310-1-2
2016.09.06 Rev.003


Rohm Semiconductor Electronic Components Datasheet

BD8374EFJ-M Datasheet

50V 500mA 1ch Source Driver

No Preview Available !

BD8374HFP-M BD8374EFJ-M
Pin Configurations
(TOP VIEW)
FIN(GND)
1234567
VIN_F 1
(TOP VIEW)
8 IOUT
VIN 2
N.C. 3
FIN(GND)
7 CRT
6 DISC
GND 4
5 PBUS
Figure 2. HRP7 Package Pin Configuration
Pin Descriptions
HRP7 Package
Pin No.
1
2
3
4
5
6
7
Pin Name
Function
PBUS Error detection I/O
DISC
CRT
GND
Discharge setting
PWM dimming
timer setting
GND
IOUT Current output
VIN_F Output current detection
VIN Power supply input
Block Diagram
VIN_F
VIN
VREF
VREF
ON/OFF
CRT
OSC
DISC
Figure 3. HTSOP-J8 Package Pin Configuration
HTSOP-J8 Package
Pin No.
1
2
3
4
5
6
7
8
Pin Name
Function
VIN_F Output current detection
VIN Power supply input
N.C. N.C.
GND GND
PBUS Error detection I/O
DISC
CRT
IOUT
Discharge setting
PWM dimming
timer setting
Current output
IOUT
VIN-0.180V
(Typ)
LED OPEN
DET
VIN-
0.05V
(Typ)
LED GND SHORT
DET
0.6V
(Typ)
PBUS
PBUS
GND
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
Figure 4. Block Diagram
2/29
TSZ02201-0G1G0C700310-1-2
2016.09.06 Rev.003


Part Number BD8374EFJ-M
Description 50V 500mA 1ch Source Driver
Maker ROHM
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