LM3445-120VFLBK/NOPB National Semiconductor, LM3445-120VFLBK/NOPB Datasheet - Page 13

• Manufacturer Part Number: LM3445-120VFLBK/NOPB
• Description: PROGRAMMERS, DEVELOPMENT SYSTEMS
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3445-120VFLBK/NOPB

• Current - Output / Channel: 365mA
• Outputs And Type: 1, Isolated
• Voltage - Output: 20V
• Features: Dimmable, TRIAC Dimmable
• Voltage - Input: 90 ~ 135VAC
• Utilized Ic / Part: LM3445
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Circuit Operation With Rotary
Forward Phase Triac Dimmer
The dimming operation of the circuit was verified using a for-
ward phase rotary triac dimmer. Waveforms captured at dif-
ferent dimmer settings are shown below:
Forward phase circuit at 150° firing angle
Forward phase circuit at 90° firing angle
Forward phase circuit at full brightness
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Circuit Operation With Reverse
Phase Triac Dimmer
The circuit operation was also verified using a reverse phase
dimmer and waveforms captured at different dimmer settings
are shown below:
Reverse phase circuit at 150° firing angle
Reverse phase circuit at 90° firing angle
Reverse phase circuit at full brightness
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