ADM8615 Datasheet

• Ultralow power consumption with I_CC = 92 nA (typical)
• Continuous monitoring with no blank time
• Pretrimmed voltage monitoring threshold options
  • 20 options from 0.5 V to 1.9 V for the ADM8615
• ±1.3% threshold accuracy over full temperature range
• Manual reset input (ADM8615)
• 200 ms (typical) reset timeout
• Low voltage input monitoring down to 0.5 V (ADM8615)
• Watchdog timer (ADM8615)
• Active low, open-drain RESET output
• Power supply glitch immunity
• Available in a 1.46 mm × 0.96 mm WLCSP
• Operational temperature range: −40°C to +85°C

• Portable/battery-operated equipment
• Microprocessor systems
• Energy metering
• Energy harvesting

The ADM8615 are voltage supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. Apart from providing power-on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by an external push-button through a manual reset input.

The ultralow power consumption of these devices makes them suitable for power efficiency sensitive systems, such as battery-powered portable devices and energy meters.

The features of each member of the device family are shown in Table 9 in the data sheet. Each device subdivides into submodels with differences in factory preset voltage monitoring threshold options. A separate supply input allows the ADM8615 to monitor 20 different low voltage levels from 0.5 V to 1.9 V. Not all device options are available as standard models.

The ADM8615 can reset on demand through the manual reset input. The watchdog function on the ADM8615 monitors the heartbeat of the microprocessor through the WDI pin.

The ADM8615 are available in a 6-ball, 1.46 mm × 0.96 mm WLCSP. The ADM8615 are specified over the temperature range of −40°C to +85°C.