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General Description

The MAX5092A/MAX5092B/MAX5093A/MAX5093B low quiescent-current, low-dropout (LDO) regulators contain simple boost preregulators operating at a high frequency. The devices seamlessly provide a preset 3.3V (MAX5092A/MAX5093A) or 5V (MAX5092B/MAX5093B) LDO output voltage from a cold-crank through load-dump (3.5V to 80V) input voltage conditions. The MAX5092_/MAX5093_ deliver up to 250mA with excellent load and line regulation. During normal operation, when the battery is healthy, the boost preregulator is completely turned off, reducing quiescent current to 65μA (typ). This makes the devices suitable for always-on power supplies.

Features

● Wide Operating Input Voltage Range: 3.5V to 72V

?? with a 4V Startup Voltage

● LDO Output Regulates to 5V Seamlessly from an

?? Input Voltage of 3.5V to 72V

● Up to 250mA Output Current

● Preset 3.3V, 5V, or Externally Programmable LDO

?? Output Voltage from 1.5V to 9V (MAX5092_) or from

?? 1.5V to 10V (MAX5093_)

● Preset 7V or Externally Programmable Boost

?? Output Voltage Up to 11V (MAX5092_) or Up to 12V

?? (MAX5093_)

● 65μA Quiescent Current in LDO Mode (VIN ≥ 8V)

?? 5μA Shutdown Current

● Power-On Reset (RESET) with Programmable

?? Timeout Period

● Output Short-Circuit and Thermal Protection

● TQFN Package Capable of Dissipating Up to 2.7W at

?? +70°C

Applications

● Industrial