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PDF BD83740HFP-M Data sheet ( Hoja de datos )
| Número de pieza | BD83740HFP-M | |
| Descripción | 50V 500mA 1ch Source Driver | |
| Fabricantes | ROHM Semiconductor | |
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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.
TSZ22111・14・001
○ The product is not designed for radiation resistance.
1/28
TSZ02201-0T1T0C700170-1-2
06.Sep.2016 Rev.002
1 page  
BD83740HFP-M
Typical Performance Curves (Reference Data)
(Unless otherwise specified Ta=25°C, VIN=VIN_F=13V)
500
450
400
350
300
250
200
150
100
50
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
RVIN_F[Ω]
Figure 4. RVIN_F vs IOUT
ΔIOUT=(IOUT/(0.18V/RVIN_F)-1)×100[%]
Figure 5. RVIN_F vs ΔIOUT
0.190
0.188
0.186
0.184
0.182
0.180
0.178
0.176
0.174
0.172
0.170
-50 -25 0 25 50 75 100 125 150
Temp[°C]
Figure 6. Temperature vs VIN_F_REF
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
0
10 20 30 40
VIN[V]
Figure 7. VIN vs VIN_F_REF
50
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/28
TSZ02201-0T1T0C700170-1-2
06.Sep.2016 Rev.002
5 Page 
BD83740HFP-M
6. Detective Function
In this IC integrated is a function for Detection from LED open, and it is possible to detect abnormal condition at PBUS
terminal.
(1) LED Open Detective Function
In case where LED connected to IOUT terminal is opened, it is detected due to overvoltage of IOUT terminal.
During the detection, PBUS terminal is switched to Low to notify the trouble.
VIN_F
VIN
VREF
PBUS
PBUS
IOUT
Current
Control
VIN-0.05V
(Typ)
-
+
GND
OPEN
Figure 15. LED Open Detection
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/28
TSZ02201-0T1T0C700170-1-2
06.Sep.2016 Rev.002
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD83740HFP-M.PDF ] | |
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