The MAX6520 is the lowest-power 1.2V, precision, three-terminal voltage reference offered in a SOT23-3 package. Ideal for 3V battery-powered equipment where power conservation is critical, the MAX6520 is a low-power alternative to existing two-terminal shunt references. Unlike two-terminal references that throw away battery current and require an external series resistor, the MAX6520 has a 70A maximum supply current (typically only 50A) that is independent of the input voltage. This feature translates to maximum efficiency at all battery voltages. The MAX6520 operates from a supply voltage as low as 2.4V, and initial accuracy is 1% for the SOT23 package. Output voltage temperature coefficient is typically only 25ppm/C, and is guaranteed to be less than 50ppm/C in the SOT23 package.