LDOs operate down to 1.045V VIN with no external bias

The regulators achieve low dropout performance without requiring either an external bias voltage or an internal charge pump, which can often generate unwanted noise and affect system operation. The LDOs use a single supply and reduce board layout complexity by avoiding the need to route a secondary bias rail to the LDO. The devices provide output voltages down to 0.6V with an accuracy of 0.5% using ceramic capacitors, with start up guaranteed from an input voltage as low as 1.045V. Further to this, precision enable and power good functions allow for easy sequencing and control of these LDOs.

“As system designers chase performance per watt metrics, the number of low voltage rails is proliferating” commented James Lougheed, Vice President, Power Management, Exar. “To help system designers with this trend, the XRP6274/75 devices offer unprecedented single supply conversions, removing the need for routing bias rails in ever increasing dense board layouts. These LDOs halve the dropout of the closest competitors.”

The regulators are targeted at a wide range of markets including communications, enterprise solutions, industrial systems and space constrained consumer devices.

The devices are available now in RoHS compliant, green/halogen free, 10-pin 3mm x 3mm DFN packages. Prices start from $3.20 and $3.60 respectively in 1000 piece quantities.