UC385-1
description
Note: Tab = Ground
The UC385 is a low dropout linear regulator providing a quick response to fast load changes. bined 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 pared to standard LDO linear regulators.
Dropout voltage (VIN to VOUT) is only 490 m V maximum and 350 m V 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 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. block diagram
VB 1
THERMAL SHUTDOWN
1.2 V BANDGAP REFERENCE
+
UC382- ADJ UC382- 1 (1.5 V) UC382- 2 (2.1 V) UC382- 3 (2.5 V)
R1
OPEN 2 kΩ...
