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부품번호 | BD8374HFP-M 기능 |
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기능 | 50V 500mA 1ch Source Driver | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 30 페이지수
Datasheet
Constant Current LED Drivers
50V 500mA
1ch Source Driver for Automotive
BD8374HFP-M BD8374EFJ-M
General Description
BD8374HFP-M and BD8374EFJ-M are 50V-withstanding
LED source drivers. Most suitably for Automotive
LED driving, it can control light through PWM of constant
current output.
Having LED open/short detective circuit and overvoltage
mute functions 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
short/open-circuited 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
HTSOP-J8
W(Typ) x D(Typ) x H(Max)
9.395mm x 10.540mm x 2.005mm
4.90mm x 6.00mm x 1.00mm
Features
AEC-Q100 Qualified
Variable form Constant-Current Source Driver
PWM Dimming Function
CR Timer for PWM Dimming Function Integrated
LED Open/Short detective Circuit Function Integrated
Overvoltage Mute and Temperature Protection
Functions Integrated
Abnormal Output Detection and Output Functions
(PBUS)
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
HTSOP-J8
Basic Application Circuit
VIN_F
VIN
IOUT
CRT BD8374HFP-M
BD8374EFJ-M
DISC
FIN
PBUS
GND
Figure 1. Typical Application Circuit
○Product configuration: Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○ The product is not designed for radiation resistance.
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BD8374HFP-M BD8374EFJ-M
Electrical Characteristics(Unless otherwise specified Ta=-40~125°C, VIN= 13V, RVIN_F=0.47Ω, RPBUS=10kΩ)
Parameter
Symbol
Min Typ Max UNIT
Condition
Circuit Current
IVIN - 2.1 6.0
IOUT Terminal
Output Current Accuracy
VIN – IOUT Drop Voltage
IOUT
VDR_IOUT
373 383 393
364 383 402
-
0.45
1.0
IOUT Terminal OFF Current
IIOUT_OFF
-
-
1
IOUT Current at GND Short
IIOUT_SHORT
-
- 40
VIN_F Terminal Voltage
IOUT Voltage
at LED Open Detection
IOUT Voltage
at LED Open Detection Release
IOUT Voltage
at LED Short Detection
CRT Terminal Charge Current
VIN_F_REF
VIOUT_OPEN
VIOUT_OPEN
_RELEASE
VIOUT_
SHORT
ICRT_SO
0.171
VIN
-0.15
VIN
-0.300
0.2
0.180
VIN
-0.050
VIN
-0.150
0.6
0.189
VIN
-0.020
VIN
-0.060
1.0
29.75 35.00 40.25
CRT Terminal Charge Voltage
VCRT_CHA
0.990
CRT Terminal
Discharge Voltage 1
VCRT_DIS1
2.7
CRT Terminal
Discharge Voltage 2
VCRT_DIS2
3.6
CRT Terminal
Charge Resistance
RCHA
51.6
DISC Terminal
Discharge Resistance 1
RD1
-
DISC Terminal
Discharge Resistance 2
RD2
2.5
PBUS Terminal
Input Voltage High
VIH_PBUS
4.0
PBUS Terminal
Input Voltage Low
VIL_PBUS
GND
-0.20
PBUS Terminal
Low Voltage
VOL_PBUS
-
PBUS Terminal
Input Current
IIN_PBUS
-
Overvoltage Mute
VIN_
OVPMUTE
27
(Note) This product is not designed for use in radioactive environments.
(Note1) Refer to Functional Description
1.10
3.0
4.0
54.3
50.0
5.0
-
-
-
38.0
29
1.21
3.3
4.4
57.0
100
10
VIN
+0.20
2.0
1.5
100
33
mA
mA Ta=25°C
mA Ta=-40°C~125°C
V IOUT=383mA
μA
VIOUT=2V, VCRT=0.7V
Ta=25°C
μA VIOUT=0V
V VIN_F_REF=VIN-VIN_F
V
V
V
μA VCRT=0.9V
V
V
V RD1<->RD2(Note1)
kΩ RCHA=(VCRT_DIS1 -
VCRT_CHA ) / ICRT_SO
Ω VCRT=3.4V
kΩ VCRT=5V
V
V
V IPBUS=2mA
μA VPBUS=13V
V VIOUT=6V
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/29
TSZ02201-0G1G0C700310-1-2
2016.09.06 Rev.003
4페이지 BD8374HFP-M BD8374EFJ-M
Functional Description
(Unless otherwise specified, Ta=25°C, VIN=13V, IOUT=6V and RVIN_F=0.47Ω. Numbers are "Typical" values.)
1. Output Current Setting
LED Current IOUT can be set as below depending on values of current setting resistance RVIN_F.
IOUT (VIN VIN_F) VIN_F_REF [A]
RVIN_F
RVIN_F
where:
VIN_F_REF is 0.18V (Typ)
RVIN_F
VIN_F
IOUT
IOUT
PWM_in
VIN
CIOUT
VREF
+B VIN-0.180V
(Typ)
GND
Figure 11. Output Current Setting
2. Table of Operations
PWM dimming mode switches to linear control depending on CRT terminal voltage.
When CRT terminal voltage surpasses VCRT_DIS2(4.0V(Typ)), Dimming mode turns to Linear Control,
and discharge resistance of DISC terminal changes from RD1(50Ω(Typ)) to RD2(5kΩ(Typ)).
LED open/short-circuit protection is activated depending on IOUT terminal voltage status, and output current is turned OFF.
Output current is also turned OFF when Low signal is input to PBUS terminal.
Operation Mode
CRT Terminal
IOUT Terminal
Voltage
(VIOUT)
Output Current
(IOUT)
PBUS Terminal
Linear Control
4.0V(Typ)≤VCRT
-
50mA~500mA
Hi-Z
PWM dimming
LED Open
See Features
Description, 3. PWM
Dimming Operation
-
-
VIOUT ≥
VIN - 0.050V(Typ)
See Features
Description, 3. PWM
Dimming Operation
1μA(Max)
Hi-Z
Low Output
LED Short
-
VIOUT ≤ 0.6V(Typ)
40μA(Max)
Low Output
PBUS Control OFF
-
-
1μA(Max)
Low Input
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
7/29
TSZ02201-0G1G0C700310-1-2
2016.09.06 Rev.003
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부품번호 | 상세설명 및 기능 | 제조사 |
BD8374HFP-M | 50V 500mA 1ch Source Driver | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |