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MFG:FAIRCHIL  Package Cooled:DIP  

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Part Number: KA7541

 

MFG: FAIRCHIL

Package Cooled: DIP

 

Description: The KA7541 provides simple and high performance electronic ballast control functions. KA7541 is optimi...


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KA7541 General Description


The KA7541 provides simple and high performance electronic ballast control functions. KA7541 is optimized for electronic ballast requiring a minimum board area, reduced component count and low power dissipation. Internal soft start circuitry eliminates the need for an external soft start PTC resistor. The initial soft start switching frequency and soft start time can be adjusted depending on the types of lamps. Protection circuitry has also been added to prevent burning out of switches in no lamp condition. output gate drive circuit clamps power MOSFET gate voltage irrespective of supply voltage

KA7541 Maximum Ratings

Parameter
Symbol
Value
Unit
Supply Voltage
Vcc
320
V
Peak Driver Output Current
Ioh, IoI
±300
mA
Driver Output Clamping Diodes
VO > VCC or VO < -0.3V
Iclamp
±10
mA
Error Amp, Multiplier and Comparator Input Voltage
Vin
-0.3 to 6
V
Operating Temperature Range
TOPR
-25 to 125
°C
Storage Temperature Range
TSTG
-65 to 150
°C
Power Dissipation
8-DIP
Pd
0.8
W
8-SOP
0.5
Thermal Resistance (Junction-to-Air)
8-DIP
Rja
100
°C/W
8-SOP
165

KA7541 Features

• Internal soft start
• Flexible soft start frequency
• No lamp protection
• Trimmed 1.5% internal bandgap reference
• Under voltage lock out with 1.8V of hysteresis
• Totem pole output with high state clamp
• Low start up and operating current

KA7541 Connection Diagram

KA7541  Connection Diagram

KA7541 datasheet

KA7541
PDF/DataSheet Download

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