MAX6469UT

The MAX6469UT are low-dropout linear regulators with a fully integrated microprocessor reset circuit. Each is available with preset output voltages from +1.5V to +3.3V in 100mV increments and delivers up to 300mA of load current. These devices consume only 82A of supply current. The low supply current, low dropout voltage, and integrated reset functionality make these MAX6469UT ideal for battery-powered portable equipment.

The MAX6469UT include a reset output that indicates when the regulator output drops below standard microprocessor supply tolerances (-7.5% or -12.5% of nominal output voltage). This eliminates the need for an external microprocessor supervisor, while ensuring that supply voltages and clock oscillators of MAX6469UT have stabilized before processor activity is enabled. Push-pull and opendrain active-low reset outputs are available, with reset timeout periods of 2.5ms, 20ms, 150ms, or 1200ms (min).

The MAX6469UT also have a shutdown feature that reduces the supply current to 0.1A (typ). The MAX6471MAX6474/ MAX6479MAX6482 offer a manual reset input to assert a microprocessor reset while the regulator output is within specification. The MAX6475/MAX6476/MAX6483/ MAX6484 feature a remote feedback sense pin for use with an external NPN transistor for higher-current applications. The MAX6469UT are available in 6-pin SOT23 and 8-pin thin QFN packages. The MAX6477 MAX6484 are available in a 3 * 3 chip-scale package (UCSP™). All devices are specified for operation from 40°C to +85°C.