Sanken Electric Co SCF-0274 Datasheet
CCFL-Inverter
SCF-0274
■Features
●
For CCFL 2 lamps
●
Built in On/Off control function
●
Regulated lamp current
●
Built in PWM Mode dimming control circuit.
●
Applications: LCD size 15 inches for monitor
Suitable Sanken's CCFL: Lamp length 300 to 340 mm
: Exterior Diameter φ2.6mm
■Outline
For 4.7W ✕ 2 Lamps
( )
0.5
±
180.0
Top View
(3.5)
3-φ3.0
0.2
±
80 .0
0.2
CN3
±
18
CN1
66.5
0.2
±
Side View
PWB (Printed wiring board): FR-4 or CEM-3(t =1.0)
Weight: 29.6g typ
■Connector terminal number and Function
Connector No.
CN1
(Input)
CN 2
(Output 1)
CN 3
(Output 2)
Terminal No.
1
2
3
4
5
1
3
1
3
Symbol
V
IN
GND
Vbr
N. C
Vrmt
Lamp1-H
Lamp1-L
Lamp 2-H
Lamp 2-L
Function
DC input voltage
GND
Dimming control
On-Off control
Output 1 high side
Output 1 low side
Output 2 high side
Output 2 low side
(3.5)
Unit : mm
0.5
±
25
8.0max
CN2
Connector type name/Manufacturer
S5B-PH-SM3-TB/JST
SM02(8.0)B-BHS-TB/JST
SM02(8.0) B-BHS-TB/JST
■Application
CN1
1
V
5
2
3
IN
Vrmt
GND
Vbr
Inverter Unit
0 to 2.5V
H
SW
L
12V
SW H: enable 2.5V to V
L : disable 0 to 0.5V
IN
■Absolute maximum ratings
Parameter Symbol Ratings Unit
DC input voltage
On-Off voltage
Dimming voltage
Output power
Operating temp.
Storage temp.
Humidity
V
Vrmt
Vbr
P
Topr
Tstg
RH
0 to 14.4
IN
0 to 14.4
0 to 3.0
L
5.0
0 to 60
–20 to 80
95
Lamp-H
Lamp-L
V
V
V
W
°C
°C
%RH
CN2, 3
1
3
Cold-Cathode
Fluorescent Lamp
Per 1 lamp
R
L
Remarks
Maximum wet-bulb temp. 38°C
No dew condensation
SCF-0274
■Electrical characteristics
Parameter
DC input voltage
Input current
Driving frequency
Output current
Dimming control frequency
Output Power
Open voltage
Symbol
V
IN
I
IN
f
sw
I
L
f
PWM
P
L
V
O
min
10.8
—
50
—
—
240
—
1500
■Dimming characteristics
9.0
8.0
rms)
6.0
4.0
2.0
Output Current (mA
0.0
0.0
0.5 1.0 1.5 2.0 2.5 3.0
PWM Dimming V
Dimming voltage (V
=0 to 0.65V ➝ Duty 100%
br
Ratings
br)
Conditions : at Topr=25°C, VIN=12V (unless otherwise stated)
typ max
12
—
55
8.0
2.5
13.2
1500
60
—
—
300
4.7
—
—
—
Unit
V
mA
kHz
mArms
mArms
Hz
W
Vrms
V
=12V
IN
R
=73kΩ
L
Per 1 lamp R
Per 1 lamp R
=73kΩ
R
L
V
=10.8V, R
IN
Remarks
=73kΩ, Vbr=0V
L
=73kΩ, Vbr=2.5V
L
=100MΩ
L
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