This product is a high-efficiency, energy-saving power control chip that can realize constant frequency pulse-width modulation at high frequencies and has over-current protection.
The Unitrode UC1875 family of integrated circuits implements control of a bridge power stage by phase-shifting the switching of one half-bridge. This allows constant frequency pulse-width modulation in combination with resonant, zero-voltage switching for high efficiency performance at high frequencies.
These devices are available in various packages including 20-pin DIP, SOIC, PLCC, and hermetically sealed cerdip. They operate over temperature ranges from -55°C to +125°C and feature four 2A Totem Pole Outputs with programmable turn-on delay.
| Switching Frequency | Up to 1MHz practical operation |
|---|---|
| Output Current | Four 2A Totem Pole Outputs |
| Error Amplifier Bandwidth | 10MHz |
| Startup Current | -150uA |
| Undervoltage Lockout Threshold (UC1875/7) | 10.75V |
| Voltage Reference Output | 4.92 to 5.08 V |
The devices support practical operation at switching frequencies up to 1MHz.
Yes, it includes a latched over-current comparator with full cycle restart operation.