The FSQ100 is a green mode power switch from Fairchild Semiconductor Corporation. It features a precise fixed operating frequency, burst-mode operation, internal startup circuit, pulse-by-pulse current limiting, over-voltage protection, overload protection, internal thermal shutdown function, auto-restart mode, under-voltage lockout with hysteresis, built-in soft-start, and secondary-side regulation. This product is widely used in mobile phone, PDA, MP3 charger and adapter, and auxiliary power for white goods, PC, C-TV, monitor.
The FSQ100 is an integrated high-voltage power switching regulator combining a VDMOS SenseFET and a Pulse Width Modulator (PWM) controller. It is specifically designed for high-performance, off-line, Switch-Mode Power Supplies (SMPS) with minimal external components, supporting burst-mode operation for efficiency.
| Switching Frequency | 67 kHz |
|---|---|
| Drain Pin Voltage | 650 V |
| Supply Voltage | 20 V |
| Total Power Dissipation | 1.40 W |
| Operating Junction Temperature | Internally limited |
| Operating Ambient Temperature | -25 to +85 °C |
| Switching Frequency Variation | +5 to +10 % |
| Maximum Duty Cycle | 74 % |
| Peak Current Limit | 0.650 A |
| Thermal Shutdown Temperature | 145 °C |
The FSQ100 supports up to 13W in an open-frame design at 230Vac.
The device operates at a fixed internal oscillator frequency of 67 kHz.
The FSQ100 can deliver up to 13 W in an open-frame configuration at 230 Vac.
The device functions within an ambient temperature range of -25 to +85 °C.