UC385T-3G3                      Description

The UC385 is a low dropout linear regulator providing a quick response to fast load changes. Combined with its precision onboard reference, the UC385 excels at driving GTL and BTL buses. Due to its fast response to load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased when compared to standard LDO linear regulators. Dropout voltage (VIN to VOUT) is only 490 mV maximum and 350 mV typical at 5-A load (0°C to 100°C). The onboard band gap reference is stable with temperature and scaled for a 1.2 V input to the internal power amplifier. The UC385 is available in fixed output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage defaults to 1.2 V.

UC385T-3G3                      Features

 Fast Transient Response

 10-mA to 5-A Load Current

 Short Circuit Protection

 Maximum Dropout of 500-mV at 5-A Load

Current

 Separate Bias (VB) and VIN Pins

 Available in Adjustable or Fixed Output

Voltages

 5-Pin Package Allows Kelvin Sensing of

Load Voltage

 Reverse Current Protection

UC385T-3G3                      Applications

·Automotive Applications

·Hybrid Electrical Vehicles(H)EV

·Commercial Agriculture Vehicles

·Motor Drives