The FSQ500L is a new power switch from Fairchild Semiconductor Corporation. It integrates a current-mode pulse width modulator (PWM) and a senseFET, which can be used in linear power supplies to replace traditional resistors and diodes, thereby improving power efficiency and reducing costs.
The FSQ500L is a single-chip 700V SenseFET Power Switch designed to replace linear power supplies with low-cost, efficient flyback converters. It features a precision fixed operating frequency of 130kHz, internal startup switching, and soft-start capabilities tuned by an external capacitor. The device eliminates the need for an auxiliary bias winding, reducing component count and size.
| Drain Pin Voltage | 700 V |
|---|---|
| Switching Frequency | 130 kHz |
| No-load consumption | 250mW |
| Package Type | SOT 223-4L |
No, the device eliminates the need for an auxiliary bias winding and associated external components.
The maximum drain pin voltage is 700V.
The device features a precision fixed operating frequency of 130kHz.