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DIT8545 Datasheet(PDF) 4 Page - Interpion semiconductor

No. de pieza DIT8545
Descripción Electrónicos  Ceratrans Driver for LCD Backlight
PDF  8 Pages
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Fabricante Electrónico  INTERPION [Interpion semiconductor]
Página de inicio  http://www.interpion.com/
Logo INTERPION - Interpion semiconductor

DIT8545 Datasheet(HTML) 4 Page - Interpion semiconductor

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DIT8545
Aug. 2002
- 4 -
WWW.INTERPIONSEMI.COM
Ceratrans Driver for LCD Backlight
CHARACTERISTICS
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
Operating Frequency
Fosc
CT=470pF
120
135
150
kHz
Frequency Change With
Supply Voltage
Dfosc
VCC=5V to 12V
-
0.3
1.5
%/V
Minimum Duty Ratio
Dmin
TONCTL = 0V
10
20
30
%
Maximum Duty Ratio
Dmax
TONCTL = 3V
55
65
75
%
TONCTL Input Bias Current
Ib(TON)
TONCTL = 0V
-
-0.1
-1
uA
[ UVLO Section ]
Upper Threshold Voltage
VthH
VCC Variation
2.6
2.8
2.95
V
Lower Threshold Voltage
VthL
VCC Variation
2.4
2.6
2.8
V
UVLO Hysteresis Voltage
Vhys
VCC Variation
0.1
0.2
0.4
V
[ ON/OFF Section ]
ON/OFF Logic High Voltage
Von/off
-
1
1.3
1.8
V
ON/OFF Input Bias Current
Ib(on/off)
ON/OFF=2V
5
20
50
uA
[ Error Amplifier Section]
Erramp Input Bias Current
Ib(EI)
-0.1
-1
uA
Inverting Reference Voltage
Vfb
1.220
1.260
1.300
V
Erramp Output Source Cur-
rent
Isource
3
10
30
mA
Erramp Output Sink Current
Isink
5
15
40
mA
Erramp Output High Voltage
Vhigh
3.2
4.2
4.5
V
Erramp Output Low Voltage
Vlow
-
0.1
0.4
V
[ Open Lamp Protection Section ]
Protection Input Bias Cur-
rent
Iprot
PROT=1.5V
-
1
40
uA
Protection Input Voltage
Vprot
-
1
1.35
1.60
V
ELECTRICAL CHARACTERISTICS
(Ta = 25OC, VCC=5V, RT=13.8K CT=1.5V, PROT=0V unless otherwise specified.)



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