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BD18341FV-ME2 数据表(PDF) 4 Page - Rohm

部件名 BD18341FV-ME2
功能描述  Constant Current Controller for Automotive LED Lamps
Download  39 Pages
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制造商  ROHM [Rohm]
网页  http://www.rohm.com
标志 ROHM - Rohm

BD18341FV-ME2 数据表(HTML) 4 Page - Rohm

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Datasheet
Datasheet
4/35
BD18340FV-M
BD18341FV-M
©2016 ROHM Co., Ltd. All rights reserved.
www.rohm.co.jp
TSZ22111・14・001
TSZ02201-0T1T0C700180-1-2
2016.04.21 Rev.002
Recommended Operating Conditions (Ta=-40°C to +125°C)
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage(Note1) (Note2)
VIN
4.5
13
19
V
CRTIMER Frequency Range
fPWM
100
-
5000
Hz
PWM Minimum Pulse Width(Note3)
tMIN
10
-
-
µs
(Note1)
ASO should not be exceeded
(Note2)
At start-up time, please apply a voltage above 5V once. The value is the voltage range after the temporary rise to 5V.
(Note3)
At connecting the External PNP Tr.(2SAR573D(ROHM) ,1pcs), That is the same when the Pulse input to CRT terminal.
Operating Conditions
Parameter
Symbol
Min
Max
Unit
The Capacitor
connecting VIN Terminal1
CVIN1
1.0
-
μF
The Capacitor
connecting VIN Terminal2
CVIN2(Note4)
0.047
-
μF
The Capacitor
connecting VREG Terminal
CVREG(Note5)
1.0
4.7
μF
The Capacitor
connecting LED Anode
CLED
0.1
0.68
μF
The Capacitor
connecting CRT Terminal
CCRT
0.01
0.22
μF
The Resistor
connecting CRT Terminal
RCRT
0.1
50
kΩ
The Resistor
for setting LED Current LED
RFB1, RFB2 (Note6)
0.8
6.5
The Resistor
for setting Disable LED Open
Detection Voltage
ROPM
25
55
kΩ
The Resistor
for setting DC Dimming
RDCDIM
4.7
50
kΩ
The Resistor
for DCIN pull-down
RDCIN
-
10
kΩ
The Capacitor
for setting Disable LED Open
Detection Time
CD(Note5)
0.001
0.1
μF
The Resistor for limiting
Base Terminal Current
RLIM
See
Features
Description 5
The External PNP Transistor
Q1
(Note7)
-
(Note4)
ROHM Recommended Value (0.1μF GCM188R11H104KA42 murata)
(Note5)
Ceramic capacitor recommended. Please setting the Disable LED Open Detection Time less than PWM minimum pulse width.
(Note6)
At connecting the External PNP Tr. (2SAR573D (ROHM), 1pcs)
(Note7)
For external PNP transistor, please use the recommended device 2SAR573D for this IC.
While using non-recommended part device, validate the design on actual board.
Please check hfe of the part to design base current limit resistor. (See Features Description, section 5).
As for parasitic capacitance, please evaluate over shoot of ILED on actual board. (See Features Description, Section 8 -Evaluation example, ILED pulse
width at PWM Dimming operation).


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