MAX181 - Smart V...

  • 2022-09-24 23:30:48

MAX181 - Smart Voltage Regulator for Network Interface Cards

The MAX1810 powers Peripheral Component Interconnect (PCI) Ethernet network interface cards (NICs), modem cards and other devices while utilizing primary and secondary (standby) voltages to power PCIcompliant systems. The device generates uninterrupted +3.3 V from a +5 V main or up to 500mA from a +5 V backup supply. An internal switch connects the +3.3 V auxiliary input to the output when the two +5 V inputs are below 4.1 V. An auxiliary switch on-resistance of only 0.18Ω minimizes output droop from the +3.3 V auxiliary supply. In addition, the MAX1810 guarantees that no reverse current flows from the output to any unbiased or invalid input, and outputs as low as 1µF remain stable with bypass capacitors at their outputs. The MAX1810 is available in a compact 8-pin high-power (0.9W) SO package.

Features Uninterrupted 3.3 V output Up to 500mA output current High power 0.9W SO-8 package Thermal and overcurrent protection Only 1µF output capacitor Internal 0.18V +3.3V auxiliary switch No reverse current invalid input