BP5843A Datasheet, PDF (1/3 Pages) Rohm – High-power LED Drivers for Ιllumination

High-power LED Drivers for Ιllumination
AC100V input, constant current
BP5843A
Absolute Maximum Ratings
Parameter
Input voltage
Output voltage
Withstand voltage
Symbol
Vi
Vo
BV
Limits
170
12
1.8
Maximum surface temperature _Tcmax
105
Operating temperature range _Topr
Storage temperature range _Tstg
−20 to +80
−25 to +85
Unit
V DC
Vpk
kV ^{1s (between primary and secondary)}
°C ^{Ambient temperature + module}
self-heating Tcmax
°C ^{Refer to derating curve}
°C
Electrical Characteristics
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Input voltage range Vi 113 141 170 V
Output current
Io
Output voltage range Vo
Output ripple voltage Vp
Power conversion efficiency η
332 350 369 mA Vi=141V, R1=0.82Ω (1%)
2.5
−
12
V Vi=141V, lo=350mA
−
−
0.5 Vp-p Vi=141V, lo=350mA
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.
Dimensions (Unit : mm)
32.6MAX.
15.8MAX.
MARKING SIDE
3.55MAX
1 34 5
9 10 11
0.75±0.1
1.3±0.2
P=2.54±0.2
2.54x10=25.4 TYP.
4.75MAX.
0.5±0.05
11.05MAX.
Derating Curve
Derating Curve
5
4
3
2
Operation Range
1
0
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta(°C)
Application circuit
BP5843A
BP5843A
Be sure to use fuse for safety
ZNR1 C3
D1
LF1
C4
1 3 9 10 11
F1
R1
+
C2
C1
C5
External components setting
C1 : Input Capacitor
10µF/250V
C2 : Output Capacitor
40µF/25V Ceramics capacitor
R1 : Output current setting resistor 0.82Ω ±1 % 1/4W (lo=350mA)
C3, C4: Noise Removal
Capacitor
Please use the capacitor, if necessary.
Capacitance : 0.1µF to 0.22µF
Rated voltage : 250V or higher
C5 : Noise Removal Capacitor 2200pF (Basic insulation)
D1: Diode bridge
800V/1A
F1: Fuse
Fuse must be used for safety
LF1: Line Filter
10mH
ZNR1: Varistor
Varistor must be used. It protects this
part from lighting surge and static electricity.
Pin No.
Function
1 Input terminal (+)
2 Skip
3 Input terminal (−)
4 NC
5 NC
6 Skip
7 Skip
8 Skip
9 Output capacitor connection terminal
10 LED connection terminal (cathode)
11 LED connection terminal (anode)
Output Characteristics
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
Output characteristics
R1=0.91Ω
Operation Range
R1=
2 4 6 8 10 12 14 16
Output Voltage(V)
Setting current
Output current-Setting resistor
2.0
1.8
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