DN05022 - ON Semiconductor

DN05022 Low-Cost LED Dimming

This circuit can be thought of as having two separate portions. There is an LED management portion and a dimmer management/PWM Signal portion. The LED management portion charges the output capacitor to run the LEDs in a “DC” state. The dimmer management portion provides loading current for the TRIAC in a dimmer and provides a gate voltage to the series-pass.

Features

• PF = 0.8
• THD = 53.8%
• High Light Output Table 2. CIRCUIT DATA
• Dimming a Function of the Dimmer’s Range
• Low BOM Cost
• Dimmable Circuit Data VRMS(IN) IRMS(IN) PF THD P(in) 100 VRMS 112 mA 0.847 44.2% 9.53 W 127 VRMS 118 mA 0.800 53.8% 12.1 W Table 3. DIMMERS TESTED Manufacturer Lutron Lutron Lutron Pass & Seymour Serial Number 500−15591A TGCL−153PH CTCL−153PDH 450 W
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