LM3445-120VFLBK/NOPB National Semiconductor, LM3445-120VFLBK/NOPB Datasheet - Page 14

• 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

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Electromagnetic Interference (EMI)
The EMI input filter of this evaluation board is configured as
shown in the following circuit diagram.
In order to get a quick estimate of the EMI filter performance,
only the PEAK conductive EMI scan was measured and the
If an additional 33nF of input capacitance (i.e. C6) is utilized
in the input filter, the EMI conductive performance is further
improved as shown in the following figure.
FIGURE 3. Peak Conductive EMI scan with additional 33nF of input capacitance
FIGURE 2. Peak Conductive EMI scan per CISPR-22, Class B Limits
FIGURE 1. Input EMI Filter and Rectifier Circuit
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data was compared to the Class B conducted EMI limits pub-
lished in FCC – 47, section 15.
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