Exar’s new XR71211 is a low-dropout (LDO) regulator providing 1,5 A from voltages as low as 1,4 V and a guaranteed dropout voltage of 250 mV at maximum junction temperature. It is targeted at 1,5 V to 1,2 V and 1,8 V to 1,5 V conversions for a wide range of markets including communications, enterprise solutions, industrial systems and space constrained consumer devices.
Exar achieves the low dropout performance of the XR71211 regulator without requiring either an external bias voltage or an internal charge pump, which can often generate unwanted noise and affect system operation. The new LDO uses a single supply which reduces board layout complexity by avoiding the need to route a secondary bias rail to the LDO.
The device’s operating input voltage range is 1,4 V to 2,625 V and it provides output voltages down to 0,6 V with an accuracy of 0,5% using ceramic capacitors. In addition, precision enable and power good functions allow for easy sequencing and control. The XR71211 is available in a RoHS compliant, 10-pin 3 x 3 mm DFN package.
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