This product is an isolated high side FET driver for driving isolated MOSFET transistors
The Unitrode UC1725 and its companions, the UC2725 and UC3725, are integrated circuits designed to drive isolated MOSFET transistors from TTL input signals. They utilize a unique modulation scheme to transmit both power and signals across an isolation boundary with minimal external components. The devices include protection circuitry such as under-voltage lockout, over-current shutdown, and gate voltage clamping to ensure fault protection for the MOSFET.
| High Level Gate Drive | 9 to 15 Volt |
|---|---|
| Operating Temperature (UC1725) | -55°C to +125°C |
| Supply Voltage | 0 to 15V |
| Forward Diode Drop (IF = 500mA) | 1.5 V |
| Output Low Level (Iout = 200mA) | 2.5 V |
| Output High Level (Iout = -200mA) | 13.4 V |
The UC1725 operates from -55°C to +125°C, while the UC2725 operates from -25°C to +85°C, and the UC3725 from 0°C to +70°C.
The output off time is calculated using the formula Toff = 1.28 RC.