MICROCHIP MIC2790H-04VD6-TR

The MIC2790/1/3 is ideal for monitoring highly-accurate core voltages that require rapid response in the event of a fault condition. The voltage supervisor IC features a manual reset input, enable input (MIC2793 only), a capacitor-programmable reset timeout delay and both an active-low and active-high reset output. The MIC2790/1/3 monitors system voltages that are in the range of 0.4V to 5.5V, with a typical sense accuracy of 0.5% at +25°C and ±1.0% across -40°C to +125°C. The IC asserts a reset output when the sense voltage drops below the threshold or when the manual reset is pulled to a logic low. The active-low reset stays low for the duration of the reset timeout delay once the sense voltage returns to normal and the manual reset transitions to a logic high state. The reset timeout delay period is programmable from 1ms to 10s with an external capacitor. The MIC2790/1/3 operates from a low supply voltage of 1.5V to 5.5V, and is rated to operate over the temperature range of -40°C to +125°C. The MIC2790 is available in a 6-pin TSOT-23 package or a 6-pin 2mm×2mm×0.55mm DFN package. The MIC2791 is available in a tiny 6-pin 1.6mm×1.6mm×0.55mm DFN package. The MIC2793 is available in a 8-pin 2mm×2mm×0.55mm DFN package.

• 1.5V to 5.5V operating supply voltage range
• Ultra-fast propagation delay (1μs typically)
• 0.4V reference voltage (SNS pin)
• ±1.0% threshold accuracy from -40°C to +125°C
• Monitored voltage range from 0.4V to 5.5V
• Programmable reset timeout delay (from 1ms to 10s)
• Manual reset input with an internal pull-up resistor
• Active-high enable input pin (MIC2793 only)
• The MIC2790/1/3 features multiple output options:
  • Open-drain active-low (/RESET)
  • Push-pull active-low (/RESET)
  • Push-pull active-high (RESET)
• -40°C to 125°C junction temperature range

• Telecom
• Computer/servers
• Medical equipment Portable
• Set-top boxes
• Critical microprocessor monitoring