The L6574 is a high voltage driver designed for lamp ballast applications. It is manufactured with BCD OFF LINE technology to ensure voltage ratings above 600V. The L6574 is capable of driving two power MOS-FETs in a half bridge topology to drive and control a fluorescent bulb. It features a dedicated timing section for pre-heat and ignition of the lamp, as well as a sense op amp for closed loop control or protection. The integrated bootstrap section and clamping on VS make the L6574 suitable for low cost applications.
The L6574 is a high voltage rail CFL/TL ballast driver designed to drive two power MOSFETs in a classical half-bridge topology. It features BCD OFFLINE technology to ensure voltage ratings in excess of 600V and includes a dedicated timing section for preheat and ignition of the lamp.
The device incorporates an integrated bootstrap section that eliminates the need for an external bootstrap diode and Zener clamping on Vs, making it suitable for low-cost applications. It also provides a sense op-amp for closed-loop control of the lamp current and protection features such as under-voltage lockout and lamp disconnection detection.
| Operating Temperature Range | -40 to +125 °C |
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The device is designed for high voltage rail applications with a supply voltage up to 600V.
Yes, it features an integrated bootstrap section that replaces the normally required external bootstrap diode.
The device is available in S016 and DIP 16 packages.