UC2708

Supply Voltage VIN . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .35V
Output Current (Each Output, Source or Sink)
Steady-State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
Peak Transient . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A
Ouput Voltage . . . . . . . . . . . . . . . . . . . . . . . . .-0.3 to (VIN + 0.3)V
Enable and Shutdown Inputs . . . . . . . . . . . . . . . . . . . -0.3 to 6.2V
A and B Inputs . . . . . . . . . . . . . . . . . . . . . .. . . -0.3 to (VIN + 0.3)V
Operating Junction Temperature (Note 2) . . . . . . . . . . . . . . 150°C
Storage Temperature Range. . . . . . . . . . . . . . . . . .  -65° to 150°C
Lead Temperature (Soldering, 10 Seconds). . . . . . . . . . . . . 300°C
NOTE 1: All voltages are with respect to Logic Gnd pin. All currents are positive into, negative out of, device terminals.
NOTE 2: Consult Unitrode Integrated Circuits databook for information regarding thermal specifications and limitations of packages.

The UC1708 family of power drivers is made with a high-speed, high-voltage, Schottky process to interface control functions and high-power switching devices particularly power MOSFETs. Operating over a 5 to 35 volt supply range, these devices contain two independent channels. The A and B inputs are compatible with TTL and CMOS logic families, but can withstand input voltages as high as VIN. Each output can source or sink up to 3A as long as power dissipation limits are not exceeded.

Although each output can be activated independently with its own inputs, they can be forced low in common through the action of either a digital high signal at the Shutdown terminal or by forcing the Enable terminal low. The Shutdown terminal will only force the outputs low, it will not effect the behavior of the rest of the device. The Enable terminal effectively places the device in under-voltage lockout, reducing power consumption by as much as 90%. During under-voltage and disable (Enable terminal forced low) conditions, the outputs are held in a self-biasing, low-voltage, state.

The UC3708 and UC2708 are available in plastic 8-pin MINI DIP and 16-pin "bat-wing" DIP packages for commercial operation over a 0oC to +70oC temperature range and industrial temperature range of -25oC to +85o C respectively. For operation over a -55oC to +125oC temperature range, the UC1708 is available in hermetically sealed 8-pin MINI CDIP, 16 pin CDIP and 20 pin CLCC packages. Surface mount devices are also available.