LDO regulator increases design flexibility

The device’s dropout voltage is typically 1.2V at the full 3A load current, supporting point of load duties with input voltages from 2.5V to 15V.  Applications benefiting from the device’s improved minimum load currents and lower dropout voltage include motherboards, telecom equipment and STB power supplies.

Output voltage is set using a pair of external resistors, with the AZ2085’s ultra-low adjust pin current enabling designers to employ larger resistors without adversely affecting tolerance.  Design flexibility is further enhanced by the device’s compatibility with low ESR ceramic capacitors.

With its maximum specification in load and line regulation of 0.3% and 0.2%, respectively, this TO252 packaged LDO offers designers a high degree of stability under extreme conditions of change in either input voltage or load.  Integral current limiting and thermal protection circuits guard against excessive junction temperatures.

The AZ2085 adjustable LDO regulator from Diodes Incorporated is priced at $0.1USD each in 100k piece quantities.