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Data Sheet
100VAC Input/Constant Current
Isolated High-power LED Driver for Illumination
BP5843A
Absolute Maximum Ratings
Dimensions (Unit : mm )
Parameter
Symbol
Limits
Unit
Conditions
32.6MAX.
15.8MAX.
Input voltage
Output voltage
Withstand voltage
Maximum surface temperature
Vi
Vo
BV
Tcmax
170
12
1.8
105
V
Vpk
kV
° C
DC
1s (between primary and secondary)
Ambient temperature + module
self-heating Tcmax
MARKING SIDE
Operating temperature range
Storage temperature range
Topr
Tstg
? 20 to +80
? 25 to +85
° C
° C
Refer to derating curve
3.55MAX
1
3 4 5
0.75 ± 0.1
1.3 ± 0.2
9 10 11
P=2.54 ± 0.2
4.75MAX.
0.5 ± 0.05
11.05MAX.
2.54x10=25.4 TYP.
Electrical Characteristics
Parameter Symbol Min.
Input voltage range Vi 113
Typ.
141
Max.
170
Unit
V
Conditions
Derating Curve
Derating Curve
5
Output current
Io
332
350
369
mA
Vi=141V, R1=0.82 ? (1%) ? 1
4
Output voltage range
Output ripple voltage
Vo
Vp
2.5
?
?
?
12
0.5
V
Vp-p
Vi=141V, lo=350mA
Vi=141V, lo=350mA
? 2
3
2
Operation Range
Power conversion efficiency η 80 85 ? % Vi=141V, Vo=12V, lo=350mA
? 1 Maximum output current varies depending on ambient temperature ; please refer to derating curve.
? 2 Spike noise is not included in output ripple voltage.
Application Circuit
1
0
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta( ° C )
Output Characteristics
BP5843A
Be sure to use fuse for safety
F1
1
3
9
10 11
Pin No.
1
2
3
4
5
6
7
Function
Input terminal (+)
Skip
Input terminal ( ? )
NC
NC
Skip
Skip
0.40
0.35
0.30
0.25
0.20
0.15
0.10
Output characteristics
R1=0.91 ?
Operation Range
R1=
LF1
D1
+
R1
C2
8
9
10
11
Skip
Output capacitor connection terminal
LED connection terminal (cathode)
LED connection terminal (anode)
0.05
0.00
0
2
4
6 8 10 12
Output Voltage( V )
14
16
C1
ZNR1
C3
C4
C5
Current Setting
Output current-Setting resistor
External Component Specifications
2.0
1.8
C1 : Input Capacitor
C2 : Output Capacitor
R1 : Output current setting
resistor
C3, C4: Noise Removal
Capacitor
C5 : Noise Removal Capacitor
D1: Diode bridge
F1: Fuse
LF1: Line Filter
ZNR1: Varistor
10 μ F/250V
40 μ F/25V ceramic capacitor
0.82 ? ± 1% 1/4W (lo=350mA)
Use if necessary
Capacitance : 0.1 to 0.22 μ F
Rated voltage : 250V or higher
2200pF (Basic insulation)
800V/1A
A fuse must be used for safety
10mH
A varistor is required to protect against lightning surges
and static electricity.
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.24 0.26 0.28 0.30 0.32 0.34 0.36
Output current : (A)
How to calculate R1
R1=0.13741/(0.91 x lo-0.151)
lo : Output current
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