UBA2021
FEATURES
- Adjustable preheat and ignition time
- Adjustable preheat current
- Adjustable lamp power
- Lamp temperature stress protection at higher mains voltages
- Capacitive mode protection
- Protection against a too-low drive voltage for the power
MOSFETs.
GENERAL DESCRIPTION
The UBA2021 is a high-voltage IC intended to drive and control pact Fluorescent Lamps (CFL) or fluorescent TL-lamps. It contains a driver circuit for an external half-bridge, an oscillator and a control circuit for starting up, preheating, ignition, lamp burning and protection.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
High voltage supply
VFS high side supply voltage
IFS < 15 µA; t < 0.5 s
- Start-up state
VVS(start) VVS(stop) IVS(standby) oscillator start voltage oscillator stop voltage standby current
VVS = 11 V
- -
- Preheat mode fstart tph VRS(ctrl) start frequency preheat time control voltage at pin RS
CCP = 100 n F
- -
- Frequency sweep to ignition f B bottom...
