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KA7540
Simple Dimming Ballast Control IC
Features
• • • • • • • • Internal soft start No lamp protection
Voltage controlled dimming 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 8-pin DIP & 8-pin SOP
Descriptions
The KA7540 provides simple and high performance electronic ballast control functions.
KA7540 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.
Voltage controlled dimming circuit is built...