Fairchild Semiconductor KA7521
The KA7521 is a electronic ballast controller for fluorescent inverter system. It contains soft start, no lamp protection and over temperature protection. With the zero voltage switching, it can also provide low noise and low power loss.| Part No. | KA7521 |
|---|---|
| Datasheet | KA7521 Download |
| Manufacturer |  Fairchild Semiconductor |
| Description | ELECTRONIC BALLAST CONTROLLER |
| Buy | Stock & Price |
FEATURES
● Dimming Control● 3 Step Soft start
● ZVS Driving
● DC feed-forward
● No Lamp Protection
● Over temperature protection with Variable Hysteresis
● Option Comparator
● Internal UVLO 16 DIP ORDERING INFORMATION Device KA7521 Package 16 DIP ÎOperating Temperature -25 ~ + 100 BLOCK DIAGRAM ©1999 Fairchild Semiconductor Corporation Rev. B KA7521 BALLAST CONTROLLER ABLOLUTE
MAXIMUM RATINGS
Characteristic Supply Voltage Peak driver output current Zener diode current Operating ambient temperature Storage Temperature Symbol VCC IO(P) IJ(ZD) TOPR TSTG Value 17 500 200 - 25 ~ +100 - 65 ~ +150 Unit V mA mA Î Î ÎELECTRICAL CHARACTERISTICS (VCC = 10V, TA = 25 , unless otherwise specified) Characteristic Symbol Test conditions Min Typ Max Unit Under Voltage Lock Out Section Start Threshold Voltage UV Lockout Hysteresis Start-up Supply Current Operating Supply Current Reference Section VTH(ST) VTHS IST ICC VCC = 7V VCC = 12V, No Load 9.1 9.7 10.3 V 1.7 1.9 2.1 V 0.8 1.0 mA 5 9 mA Reference V...
