TinySwitch™-II integrates a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry onto a monolithic device. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias winding and associated circuitry. In addition, the TinySwitch-II devices incorporate auto-restart, line undervoltage sense, and frequency jittering.
Fully integrated auto-restart for short circuit and open loop fault protection – saves external component costs
Programmable line under-voltage detect feature prevents power on/off glitches – saves external components
Frequency jittering dramatically reduces EMI (∼10 dB) – minimizes EMI filter component costs
132 kHz operation reduces transformer size – allows use of EF12.6 or EE13 cores for low cost and small size
Built-in circuitry practically eliminates audible noise with ordinary dip-varnished transformer
| Attribute | Value |
|---|---|
| Mounting Type | Surface Mount |
| Package Type | SMDC |
| Pin Count | 8 |
| Current Limit | 267mA |
| Dimensions | 9.83 x 6.6 x 3.68mm |
| Length | 9.83mm |
| Width | 6.6mm |
| Height | 3.68mm |
| Maximum Input Voltage | 265 V ac |
| Maximum Operating Temperature | +150 °C |
| Minimum Input Voltage | 85 V ac |
| Minimum Operating Temperature | -40 °C |
| Operating Temperature Range | -40 → +150 °C |
| Input Voltage Range | 85 → 265 V ac |