BD83740HFP-M Datasheet, PDF (1/32 Pages) Rohm – 1ch Source Driver for Automotive

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.
TSZ22111・14・001
○ The product is not designed for radiation resistance.
1/28
TSZ02201-0T1T0C700170-1-2
06.Sep.2016 Rev.002