The UC3620 is a brushless DC motor driver capable of decoding and driving all 3 windings of a 3-phase brushless DC motor. In addition, an on-board current comparator, oscillator, and high gain Op-Amp provide all necessary circuitry for implementing a high performance, chopped mode servo amplifier. Full protection, including thermal shutdown, pulse-by-pulse current limiting, and under-voltage lockout aid in the simple implementation of reliable designs. Both conducted and radiated EMI have been greatly reduced by limiting the output dv/dt to 150V/µs for any load condition. The UC1620SP is characterized for operation over the full military tem- perature range of -55°C to +125°C, while the UC3620SP is charac- terized for 0°C to +70°C.
The document describes the Unitrode UC1620 and UC3620, which are switchmode drivers capable of decoding and driving all three windings of a 3-phase brushless DC motor. These devices feature an on-board current comparator, oscillator, and high gain Op-Amp to implement high-performance chopped mode servo amplifiers.
| Supply Voltage Range | 8V to 40V |
|---|---|
| Operating Temperature (UC3620) | 0°C to +70°C |
| Thermal Shutdown Junction Temperature | 150°C |
The device operates with a supply voltage between 8V and 40V.