Datenblatt-Suchmaschine für elektronische Bauteile |
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TS19373 Datenblatt(PDF) 3 Page - Taiwan Semiconductor Company, Ltd |
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TS19373 Datenblatt(HTML) 3 Page - Taiwan Semiconductor Company, Ltd |
3 / 9 page TS19373 800mA Buck (Step-down) WLED Driver 3/9 Version: B09 Application Information Pin Description Pin Function Description 1 VIN Input Voltage Supply pin 2 Ground Ground Pin 3 Timing Capacitor Timing capacitor oscillator input 4 ISENSE Peak current sense input to monitor the voltage drop across an external resistor to limit the peak current through the circuit 5 SW Switching Pin. This is the internal Darlington switch collector Inductor Selection A 100uH inductor is recommended for most TS19373 applications. Although small size and high efficiency are major concerns, the inductor should have low core losses at 180kHz and low DCR (copper wire resistance). Diode Selection Schottky diodes, with their low forward voltage drop and fast reverse recovery, are the ideal choices for TS19373 applications. The forward voltage drop of a Schottky diode represents the conduction losses in the diode while the diode capacitance represents the switching losses. For diode selection, both forward voltage drop and diode capacitance need to be considered. Schottky diodes with higher current ratings usually have lower forward voltage drop and larger diode capacitance, which can cause significant switching losses at the 180kHz switching frequency of the TS19373. Capacitor Selection For Input capacitor and timing capacitor are able to use small ceramic capacitor for most of TS19373 applications. When AC input, to add a 100µF electric capacitor for input capacitor is recommended. |
Ähnliche Teilenummer - TS19373_10 |
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Ähnliche Beschreibung - TS19373_10 |
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