The FSQ211 is a green mode Fairchild power switch with features including internal avalanche-rugged SenseFET, precision fixed operating frequency, burst-mode operation, internal start-up circuit, pulse-by-pulse current limiting, overload protection, internal thermal shutdown function, auto-restart mode, under-voltage lockout with hysteresis, built-in soft-start, and secondary-side regulation. It is suitable for applications such as chargers and adapters for mobile phones, PDAs, and MP3 players, as well as auxiliary power for white goods, PCs, CRT TVs, and monitors.
The FSQ211 is a Green Mode Fairchild Power Switch (FPS) that combines a VDMOS SenseFET with a voltage mode PWM control block. It is specifically designed for high-performance, off-line Switch Mode Power Supplies (SMPS), offering features such as internal avalanche-rugged operation, burst-mode capability, and pulse-by-pulse current limiting to reduce component count and design size.
| Switching Frequency | 67 kHz (Typical) |
|---|---|
| Drain Pin Voltage | 650 V |
| Gate-Source Voltage | ±20 V |
| Total Power Dissipation | 1.40 W |
| Operating Junction Temperature | Internally limited |
| Operating Ambient Temperature | -25 to +85 °C |
The device features a precision fixed operating frequency of 67 kHz.
Yes, it includes an internal Thermal Shutdown Function (TSD) to protect the device.
The absolute maximum rating for the Drain Pin Voltage is 650 V.