Constant Current LED Drivers
1ch Source Driver for Automotive
BD83740HFP-M is 50V-withstanding LED source drivers.
Most suitably for Automotive
LED driving, it can control light through PWM of constant
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.
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
W(Typ) x D(Typ) x H(Max)
9.395mm x 10.540mm x 2.005mm
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
Abnormal Output Detection and Output Functions
(Note1: Grade 1)
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.)
Basic Application Circuit
Figure 1. Typical Application Circuit
○Product configuration: Silicon monolithic integrated circuit
© 2014 ROHM Co., Ltd. All rights reserved.
○ The product is not designed for radiation resistance.