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BD18326NUF-M ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 21 Page - Rohm

๋ถ€ํ’ˆ๋ช… BD18326NUF-M
์ƒ์„ธ๋‚ด์šฉ  40 V 600 mA 1ch Constant Current Driver for Automotive LED Lamps
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BD18326NUF-M ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 21 Page - Rohm

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ฉ 2020 ROHM Co., Ltd. All rights reserved.
BD18326NUF-M
28.Sep.2020 Rev.001
www.rohm.com
TSZ22111 ? 15 ? 001
TSZ02201-0T1T0B300340-1-2
Recommended Operating Conditions
No.
Parameter
Symbol
Min
Typ
Max
Unit
O-1 Supply Voltage(Note 1) (Note 2)
VIN
5.5
13.0
20.0
V
O-2 OUT Pin Maximum Output Current
(DC)
IOUT(DC)
-
-
400
mA
O-3 OUT Pin Maximum Output Current
(ON Duty: 50 %)
IOUT(50%DUTY)
-
-
600
mA
O-4 PWM Dimming Frequency
fPWM
200
-
750
Hz
O-5 PWM Minimum Pulse Width (Note 3)
tMIN
50
-
-
ตs
O-6 Operating Temperature
Topr
-40
-
+150
ฐC
(Note 1) ASO should not be exceeded.
(Note 2) At start up, apply 6.5 V or more once. The value is the voltage range after applying 6.5 V or more once.
(Note 3) It is the same as when the pulse input to the CRT pin.
External Parts Setting Range
No.
Parameter
Symbol
Min
Typ
Max
Unit
P-1 Capacitor Connecting The VIN Pin
at Operating DC Mode Only(Note 3)
CVIN_DC
0.47
-
-
?F
P-2 Capacitor Connecting The VIN Pin
at Operating PWM Mode(Note 3)
CVIN_PWM
1.0
-
-
?F
P-3
Capacitor
Connecting The OUT Pin(Note 4)
(ILED < 400 mA)
COUT U400
-
-
1.0
?F
P-4
Capacitor
Connecting The OUT Pin(Note 4)
(ILED ? 400 mA)
COUT O400
0.1
-
1.0
?F
P-5 Capacitor
Connecting The ISINK Pin
CISINK
-
-
1.0
nF
P-6 Capacitor for Setting CR Timer
CCRT
0.047
0.100
0.220
?F
P-7 Resistor for Setting CR Timer
RCRT
0.1
-
50.0
k?
P-8 Resistor for Setting Output Current
RSET
4.0
-
24.0
k?
P-9 Resistor for DCIN Pull-down
RDCIN
-
-
10
k?
P-10 Resistor for Setting BPCNT 1
RBP1
10.5
-
100.0
k?
P-11 Resistor for Setting BPCNT 2
RBP2
3.3
-
30.0
k?
P-12 Resistor for Setting BPCNT 3
RBP3
0.24
-
96.50
k?
(Note 3) Connect CVIN_DC or CVIN_PWM within 10 mm from the IC. If they are connected more than 10 mm from the IC, there is a possibility of unstable operation
such as oscillation of output current IOUT etc. So consider with enough evaluation on actual board
(Note 4) If a long wire connects from the OUT pin to the LED anode, there is a possibility of output current IOUT oscillation.
After consideration with enough evaluation, connect a capacitor connecting to the OUT pin COUT between the OUT pin and GND to prevent oscillation.


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