ADI ADM6339HARJZ-RL7

The ADM6339 is a high accuracy supervisory circuit capable of monitoring up to four system supply voltages. The ADM6339 incorporates a variety of internally pretrimmed undervoltage threshold options for monitoring -5.0 V, +1.8 V, +2.5 V, +3.0 V, +3.3 V, and +5.0 V supply voltages. Tolerance levels of ±5% and ±10% are available. The device is also available with one to three adjustable threshold options. The adjustable voltage threshold options are +1.23 V, +0.62 V, and -0.5 V. If a monitored power supply voltage decreases below the minimum voltage threshold (or rises above the maximum voltage threshold for the -0.5 V and -5.0 V input options), a single active low output asserts, triggering a system reset. The output is open drain with a weak internal pull-up to the monitored IN₂ supply of typically 10 μA. After all voltages exceed the selected threshold level, the reset signal remains low for the reset timeout period (200 ms typical). The ADM6339 output remains valid as long as IN₁ or IN₂ exceeds 1 V. Unused monitored inputs should not be allowed to float or to be grounded; instead, they should be connected to a supply voltage greater than their specified threshold voltages. The ADM6339 is available in a 6-lead SOT-23 package. The device operates over the extended temperature range of -40°C to +85°C.

• Accurate monitoring of up to four power supply voltages
• 6 factory-set threshold options: -5.0 V, +1.8 V, +2.5 V, +3.0 V, +3.3 V, and +5.0 V
• Adjustable input threshold options: −0.5 V [±2.0% accuracy), +0.62 V (±0.8% accuracy), and +1.23 V
• 200 ms typical reset timeout
• Open-drain RESET output (10 μA internal pull-up)
• Reset output stage: active low, valid to |IN₁| = 1 V or |IN₂| = 1 V
• Low power consumption (55 μA)
• Glitch immunity
• Specified from -40°C to +85°C
• 6-lead SOT-23 package

• Telecommunications
• Microprocessor systems
• Data storage equipment
• Servers/workstations