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PT5621 Datasheet(PDF) 1 Page - Princeton Technology Corp

Part # PT5621
Description  Three-Way Ballast Controller
PDF  4 Pages
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Manufacturer  PTC [Princeton Technology Corp]
Direct Link  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp

PT5621 Datasheet(HTML) 1 Page - Princeton Technology Corp

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PT5621
Three-Way Ballast Controller
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
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.
APPLICATION
• Various types of fluorescent lamps/CFL (specifically
for three-way dimming application)
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
BLOCK DIAGRAM


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