UC385T-3G3 Description
The UC385 is a low dropout linear regulator providing a quick response to fast load changes. Combined withits precision onboard reference, the UC385 excels at driving GTL and BTL buses. Due to its fast response toload transients, the total capacitance required to decouple the regulator’s output can be significantly decreasedwhen 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 bandgap reference is stable with temperature and scaled for a 1.2 V input to the internal poweramplifier. The UC385 is available in fixed output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of theadjustable version can be set with two external resistors. If the external resistors are omitted, the output voltagedefaults 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
