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PDF BD8372EFJ-M Data sheet ( Hoja de datos )
| Número de pieza | BD8372EFJ-M | |
| Descripción | 50V 200mA 1ch Source Driver | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Constant Current LED Drivers
50V 200mA
1ch Source Driver for Automotive
BD8372HFP-M BD8372EFJ-M
General Description
BD8372HFP-M and BD8372EFJ-M are LED source
drivers capable of withstanding high input voltage (50V
MAX). The constant current output is set by either of
two external resistors. It has built-in LED open/short
protection, external resistance open/short protection
and overvoltage protection that can achieve high
reliability. It is possible to control all LEDs together and
turn OFF even if LED causes short/open in a certain
row when driving two or more LEDs by using multiple
ICs.
Features
Variable form Constant- Current Source
H/L Current Setting Switch Control
LED Open/Short Protection Circuit Integrated
ISET Open/Short Protection Circuit Integrated
Overvoltage Mute and Temperature Protection
Function Integrated
Abnormal Output Detection and Output Functions
(PBUS)
Applications
For automotive (Rear lamp, Interior light, etc.).
Basic Application Circuit
VIN
Key Specifications
Input Voltage Range:
Max Output Current:
Output Current Accuracy:
Operating Temperature Range:
5.5V to 40V
200mA(MAX)
±8%(Max)
-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
HRP7
HTSOP-J8
IOUT
STOP
PBUS
BD8372HFP-M
BD8372EFJ-M
ISETL
ISETH
FIN
GND
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/25
TSZ02201-0T1T0C700150-1-2
09.Dec.2015 Rev.001
1 page  
BD8372HFP-M BD8372EFJ-M
Electrical Characteristics
(Unless otherwise specified, Ta=-40°C to 125°C, VIN=13V, RISETL=RISETH=40kΩ, RPBUS=10kΩ)
Parameter
Symbol
Limit
Unit
Min Typ Max
Conditions
Circuit Current
IOUT Output Current H
IOUT Output Current L
IOUT Drop Voltage H
IOUT Drop Voltage L
IOUT OFF Current
IIN - 2.9 5 mA
IOUT_H
48.5
50
51.5
mA
50mA setting (ISET=40kΩ)
STOP=High, Ta=25°C
46
50
54
mA
50mA setting (ISET=40kΩ)
STOP=High, Ta=-40°C to +125°C
IOUT_L
4.85
5
5.15
mA
5mA setting (ISET=40kΩ)
STOP=Low, Ta=25°C
4.6
5
5.4
mA
5mA setting (ISET=40kΩ)
STOP=Low, Ta=-40°C to +125°C
VDRH_IOUT
-
0.7 1.2
V
200mA setting(ISET=10kΩ)
STOP=High
VDRL_IOUT
-
0.5 0.7
V
20mA setting(ISET=10kΩ)
STOP=Low
IIOUT_OFF
-
-
1 µA VIOUT=2V, PBUS=L, Ta=25°C
IOUT Current at GND Short
IIOUT_SHORT
-
- 40 µA VIOUT=0V
ISET Terminal Voltage
VISET
- 0.8 -
V At ISETL or ISETH pins
ISET Short Detection Resistor RISET_SHORT
-
5.1k 7.5k Ω At ISETL or ISETH pins
ISET Open Detection Resistor RISET_OPEN 125k 400k
-
Ω At ISETL or ISETH pins
IOUT LED OPEN Detection
VIOUT_OPEN VIN-0.3 VIN-0.2 VIN-0.1 V
IOUT LED Short Detection
VIOUT_SHORT
0.2
0.6
1.0
V
STOP Input Voltage H
VIH_STOP
4.0
- VIN+0.2 V
STOP Input Voltage L
VIL_STOP
GND
-
1.0
V
STOP Input Current
VIN_STOP - 40 100 µA VSTOP=13V
PBUS Input Voltage H
VIH_PBUS
4.0
- VIN+0.2 V
PBUS Input Voltage L
VIL_PBUS
GND
-
2.0
V
PBUS Low Voltage
VOL_PBUS
-
- 1.5 V IPBUS=20mA
PBUS Input Current
IIN_PBUS
- 38 100 µA VPBUS=13V
IN Under Voltage Open
Detection Mask Voltage
VUVLO_IOPEN
7.5
8.0
8.5
IN Over Voltage Mute Current VIN_OVPMUTE 16 19 24
V
V
200mA setting (ISET=10kΩ)
STOP=High
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/25
TSZ02201-0T1T0C700150-1-2
09.Dec.2015 Rev.001
5 Page 
BD8372HFP-M BD8372EFJ-M
3. Current Control at Output Saturation
When VIOUT (=VF) - VIN > 0.5V (TYP), the LED current IF is decreased to a set current 20µA (TYP). Therefore, VF
decreases due to the decrease in the current. Open detection can be prevented by keeping VIOUT ≤ VIN-0.5V. The
current controlled to IOUT<20µA and the LED current IF must be set so that VF does not exceed VUVLO_OPEN by 20µA.
If VIN < VUVLO_OPEN this function is not active.
VIVOVUIIOOTU>UTVT>＞IVOUIVOTIU_OTOU_POTEP_NOENPEN
HoHwoewveevre, ro, poepnenddeetteeccttioionn is mmaasskkeedd
bybVy INV<INV<UVVULVOL_OOP_OENPEN.
0.5V
VVIINN
VVIIOOUUTT__OOPPENEN
VVIINN--VVDDRRHH_I_OIOUUT T
VVIOIOUUT(T=(=VVFF) )
VVUUVVLLOO_O_OPEPNEN
0
Setting current
IIIIOOUUTT(=（=IFIF))
LLEEDD VVFF__IIFFCChahraarcatcetreisrtiisctic
0
TThheeccuurrrreenntt ddeeccrreeaasseess bbyyVVIOIOUUTT>>VVININ-V-DVRD_IROU_ITOUT
tofoar asestetcucrurrernent.t.
IIIOOUUT=T2=200µuAA(（Mmax）)
To keeeeppVVIIOOUUTT≦≤ VIINN--00.5.4VV,, tthhe current is connttrollleedd. to IOUT=20µA (Max)
※To IOUT=20uA(max)
VIN
Current
control
LED_OPEN
- VIN-0.2V
+
IOUT
- VIN-
0.5V
+
Current limit
ISET
Figure 15. Current Control at Output Saturation
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/25
TSZ02201-0T1T0C700150-1-2
09.Dec.2015 Rev.001
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet BD8372EFJ-M.PDF ] | |
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