Ceratrans Driver Backlight DIT8545 advanced backlight inverter co

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Ceratrans Driver Backlight DIT8545 advanced backlight inverter co

Datasheet Thumbnail

Top Searches for this datasheet

DIT8545
Ceratrans Driver Backlight
DIT8545 advanced backlight inverter control based piezo-ceramic transformer. control scheme employing variable equency duty control achieves very high efficiency over 90%. this control scheme, soft start zero voltage switching functions omatically obtained. DIT8545 realize CCFL backlight inverter with small size cost.
FEATURES
Soft start function Programmable Operating Frequency Analog Dimming Control Function Burst Dimming Control ON/OFF Control Function Open Lamp Protection 10SSOP Package
ORDER INFORMATION
Device DIT8545 Package 10SSOP-225 Operating Temp
BLOCK DIAGRAM
UVLO
VFVCO
Driver
TONCT
Error
Bandgap Reference Bias Generator Latch
ON/OFF
TONCTL
PROT
Aug. 2002
WWW.INTERPIONSEMI.COM
DIT8545
Ceratrans Driver Backlight CONNECTIONS
ON/OFF
PROT
DIT8545
TONCTL
SYMBOL TONCTL PROT ON/OFF DESCRIPTION TIMING CAPACITOR CONNECTION TIMING RESISTOR CONNECTION ERROR AMPLIFIER INPUT ERROR AMPLIFIER OUTPUT SWITCH TIME CONTROL INPUT OPEN LAMP PROTECTION INPUT ON/OFF CONTROL INPUT GROUND OUTPUT SUPPLY VOLTAGE INPUT
Aug. 2002
WWW.INTERPIONSEMI.COM
DIT8545
Ceratrans Driver Backlight
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTICS Supply Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL Topr Tstg VALUE 13.5 UNIT
RECOMMENDED OPERATING CONDITIONS
CHARACTERISTICS Supply Voltage Oscillator Frequency SYMBOL fosc VALUE 3~13.5 40~250 UNIT
ELECTRICAL CHARACTERISTICS
VCC=5V, RT=13.8K CT=1.5V, PROT=0V unless otherwise specified.) CHARACTERISTICS SYMBOL CONDITIONS UNIT
Operating Current Specifications] State Supply Current State Supply Current Average Operating Current State Start-up Current State Start-up Current Voltage Controlled Oscillator Voltage Terminal Maximum Current Voltage Line Regulation Voltage Load Regulation Aug. 2002 Vref IRTmax Vline Vload RT=0V VCC=5V ->12V Io=100uA~1mA 1.235 1.260 1.285 -3Icc(on) Icc(off) Ist(on) Ist(off) ON/OFF=2V ON/OFF=0V CT=470pF VCC=VthH 0.3V ON/OFF=2V VCC=VthH 0.3V ON/OFF=0V
WWW.INTERPIONSEMI.COM
DIT8545
Ceratrans Driver Backlight ELECTRICAL CHARACTERISTICS
VCC=5V, RT=13.8K CT=1.5V, PROT=0V unless otherwise specified.)
CHARACTERISTICS Operating Frequency Frequency Change With Supply Voltage Minimum Duty Ratio Maximum Duty Ratio TONCTL Input Bias Current UVLO Section Upper Threshold Voltage Lower Threshold Voltage UVLO Hysteresis Voltage ON/OFF Section ON/OFF Logic High Voltage ON/OFF Input Bias Current Error Amplifier Section] Erramp Input Bias Current Inverting Reference Voltage Erramp Output Source Current Erramp Output Sink Current Erramp Output High Voltage Erramp Output Voltage
SYMBOL Fosc Dfosc Dmin Dmax Ib(TON)
CONDITIONS CT=470pF VCC=5V TONCTL TONCTL TONCTL
-0.1
UNIT
VthH VthL Vhys
Variation Variation Variation
2.95
Von/off Ib(on/off)
ON/OFF=2V
Ib(EI) Isource Isink Vhigh Vlow 1.220
-0.1 1.260
1.300
Open Lamp Protection Section Protection Input Bias Current Protection Input Voltage Iprot Vprot PROT=1.5V 1.35 1.60
Aug. 2002
WWW.INTERPIONSEMI.COM
DIT8545
Ceratrans Driver Backlight ELECTRICAL CHARACTERISTICS
VCC=5V, RT=13.8K, CT=1.5V, PROT=0V unless otherwise specified.) CHARACTERISTICS Output Driver Section Output High Voltage Output High Voltage Output High Voltage Output Voltage Output Voltage Output Voltage with UVLO Activated Output Source Current Output Sink Current Voh1 Voh2 Voh3 Vol1 Vol2 Vouv Io(source) Io(sink) 20mA 100uA VCC=5V, VCC=2V SYMBOL CONDITIONS UNIT
Aug. 2002
WWW.INTERPIONSEMI.COM
DIT8545
Ceratrans Driver Backlight TYPICAL APPLICATION
ON/OFF BURST DIMMING
D8545
ANALOG DIMMING
TONCTL
ON/OFF
PROT
Aug. 2002
WWW.INTERPIONSEMI.COM
CCFL
DIT8545
Ceratrans Driver Backlight ELECTRICAL DIAGRAMS
Duty(%)
VTCTRL DUTY
CT=470p RT=13.8Kohm
VTCTRL(V)
Fig.1 VTCTRL DUTY
VTCTRL Frequency
Frequency(kHz)
CT=470p RT=13.8Kohm
VTCTRL(V)
Fig.2 VTCTRL Frequency
Aug. 2002
WWW.INTERPIONSEMI.COM
DIT8545
Ceratrans Driver Backlight PACKAGE DIMENSION
Aug. 2002
WWW.INTERPIONSEMI.COM

Ceratrans Driver Backlight DIT8545 advanced backlight inverter co

Top Searches for this datasheet

Other recent searches