PT5621
Three-Way Ballast Controller
DESCRIPTION
The PT5621 is an electronic ballast controller IC
specifically for three-way dimming fluorescent lamps.
The features of the controller include negative-feedback
closed-loop control of the lamp current, programmable
preheat time, low start-up current and precise oscillating
frequency. PT5621 is available in both DIP16 and
SOP16 packages.
FEATURES
•
Three-way dimming fluorescent lamp electronic
ballast
•
Closed-loop control of the lamp current
•
Precise working frequency control
•
Programmable preheat time
•
Constant frequency preheat, sweeping frequency
ignition
•
Fixed dead time
•
Supporting low luminance Ignition
•
Supporting DIP16/SOP16 packages
APPLICATION
•
Various types of fluorescent lamps/CFL (specifically
for three-way dimming application)
BLOCK DIAGRAM
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PTC [ PRINCETON TECHNOLOGY CORP ]
