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Rohm Semiconductor Electronic Components Datasheet

BD83740HFP-M Datasheet

50V 500mA 1ch Source Driver

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Datasheet
Constant Current LED Drivers
50V 500mA
1ch Source Driver for Automotive
BD83740HFP-M
General Description
BD83740HFP-M is 50V-withstanding LED source drivers.
Most suitably for Automotive
LED driving, it can control light through PWM of constant
current output.
Having LED open detective function and overvoltage mute
function 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
opened 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
W(Typ) x D(Typ) x H(Max)
9.395mm x 10.540mm x 2.005mm
Features
AEC-Q100 Qualified(Note1)
Variable form Constant-Current Source Driver
PWM Dimming Function
CR Timer for PWM Dimming Function Integrated
LED Open detective Function Integrated
Overvoltage Mute and Temperature Protection
Functions Integrated
Abnormal Output Detection and Output Functions
(PBUS)
(Note1: Grade 1)
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
Basic Application Circuit
PWM_in
DC_in
+B
D1
ZD1
D2
D3
RPBUS
RVIN_F
CVIN
CCRT RCRT
VIN_F
VIN
IOUT
CRT BD83740HFP-M
DISC
PBUS
FIN
GND
CIOUT
Figure 1. Typical Application Circuit
Product configuration: Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
The product is not designed for radiation resistance.
1/28
TSZ02201-0T1T0C700170-1-2
06.Sep.2016 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BD83740HFP-M Datasheet

50V 500mA 1ch Source Driver

No Preview Available !

BD83740HFP-M
Pin Configurations
(TOP VIEW)
FIN(GND)
Pin Descriptions
Block Diagram
1234567
Figure 2. HRP7 Package Pin Configuration
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
VIN_F
VIN
VREF
VREF
ON/OFF
CRT
OSC
DISC
PBUS
PBUS
IOUT
VIN-0.180V
(Typ)
LED OPEN
DET
VIN-
0.05V
(Typ)
GND
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
Figure 3. Block Diagram
2/28
TSZ02201-0T1T0C700170-1-2
06.Sep.2016 Rev.002


Part Number BD83740HFP-M
Description 50V 500mA 1ch Source Driver
Maker ROHM
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