BD83732HFP-M_16 Datasheet, PDF (1/33 Pages) Rohm – 1ch Source Driver for Automotive

Datasheet
Constant Current LED Drivers
50V 500mA
1ch Source Driver for Automotive
BD83732HFP-M BD83733HFP-M
General Description
BD83732HFP-M and BD83733HFP-M are 50V tolerant
LED current drivers. Suitable for Automotive LED
applications, it can control light through constant current
output with control using PWM.
Having LED open/short detective circuit and LED current
de-rating functions integrated, it can deliver high reliability.
By utilizing Rohm’s patented PBUS function, it is possible
to turn OFF all LEDs when a row of LEDs are
short/open-circuited if multiple number of the ICs are used
In case the LED connected to the output IOUT terminal
has 2 LEDs in serise, BD83732HFP-M has to be used, in
case of 3 LEDs in series - BD83733HFP-M ( Refer to
Page.18 LED Open Detection / Disable LED Open
Detection ).
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
 Variable form Constant-Current Source Driver
 PWM Dimming Function
 LED constant current set by external resistor
 LED Current De-rating Function
 LED Open/Short detection
 Disable LED Open Detection at low power supply
 Temperature Protective
 Abnormal Output Detection and Output Functions
(PBUS)
HRP7
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.)
Basic Application Circuit
PWM_in
DC_in
+B
D1
ZD1
D2
D3
RDCIN
RPBUS1
ZD2
RPBUS2
RTHM
RVIN_F
CVIN
CCRT RCRT
VIN_F
VIN
IOUT
CRT _BD83732HFP-M
BD83733HFP-M
DISC
FIN
PBUS
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.
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TSZ02201-0G1G0C700310-1-2
2016.Aug.25 Rev.003