5 Volt Input
TAIYO YUDEN
LS655-RH
RoHS
Model
LCD Backlight Driver
(4W)
Dual Tube CCFT Inverter
Brightness Control
Physical Specifications
Dimensions:
Operating Temp:
Relative Humidity:
Storage:
Impact Resistance:
Vibration Resistance:
COMPLIANT
105mm x 25mm x 10mm
(4.13" x 0.98" x 0.39")
0 to 60°C, convection cooling
20% to 90%, non-condensing
-20 to 85°C/5-95% RH
50G half wave per 2 msec
10-55-10 Hz/min @ 1.5mm
Input Specifications*
Item
Condition
Standard
Input Voltage
Rated
Tolerance
Max. Input Current
Max. Input Power
DC-Bright
DC-Resistor
*Above Specifications Occur @ 25 ± 5ºC
—
Continuous Operation
Starting Condition (Discharge Starting Voltage)
V
IN
= 5 Vdc
Luminance @ Max.
V
IN
= 5 Vdc
Luminance @ Max.
I
OUT
= Max
I
OUT
= Min
I
OUT
= Max
I
OUT
= Min
5 Vdc
4.75 V - 5.25 V
4.75 V - 5.25 V
950 mA Typ.
4.8 W
1.9 V
1.5 V
10 kΩ
0 kΩ
Output Specifications*
Item
Condition
Standard
MIN
TYP
MAX
Output Voltage (Vrms)
Tube Current for per Lamp (mArms)
Max. Power Output for 2 Lamps (W)
Ignition Frequency (kHz)
*Above specifications occur @ 25 ± 5ºC.
V
IN
= 5 Vdc
Luminance @ Max.(V
BR
= 1.9 V @ 10 kΩ)
Luminance @ Min. (V
BR
= 1.5 V @ 0 kΩ)
V
IN
= 5 Vdc/Luminance @ Max.
Luminance @ Max.
—
—
—
—
—
1000
5.2
2.2
4.0
55
—
—
—
—
—
Model
LS655-RH
Luminance Variance
Item
Condition
Applied Voltage
Output Current
Luminance @ Max.
Luminance @ Min.
Btwn. pin 6 and GND, or pin 5 & 6
Btwn. pin 6 and GND, or pin 5 & 6
Vbr = 1.9 V or 10 kΩ
Vbr = 1.5 V or 0 kΩ
5.2 mA (one lamp)
2.2 mA (one lamp)
© Copyright 2007 TAIYO YUDEN (U.S.A.), INC. Specifications subject to change without notice.
TAIYO YUDEN (U.S.A.), INC.
440 Stevens Avenue, Suite 300 Solana Beach, CA 92075
(858) 350-6800 / Fax: (858) 350-6854
(800) 263-4532
www.t-yuden.com
inverters@t-yuden.com
FM 32227
Model
LS655-RH
Tech Notes
Connection Diagram
LS655-RH
DC Bright Control Method*
Maximum output current can be adjusted by applying bias
voltage or using a variable resistor as shown below.
1 GND
2 GND
5 Vdc
5 Vdc
1 GND
2 GND
3
4
Variable
Resistor
(0-10 kΩ
20%-100%)
3
4
DC Voltage
Bias
(1.5-1.9 Vdc
20%-100%)
V
IN
V
IN
V
BRL
V
BRH
V
IN
V
IN
V
BRL
V
BRH
5
6
5
6
dimming by applying DC bias voltage
dimming by using a variable resistor
1 GND
2 GND
5 Vdc
3
4
5
6
V
IN
V
IN
V
BRL
V
BRH
preset to maximum brightness
(continuous)
© Copyright 2007 TAIYO YUDEN (U.S.A.), INC. Specifications subject to change without notice.
TAIYO YUDEN (U.S.A.), INC.
440 Stevens Avenue, Suite 300 Solana Beach, CA 92075
(858) 350-6800 / Fax: (858) 350-6854
(800) 263-4532
www.t-yuden.com
inverters@t-yuden.com
FM 32227
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
