Analog Devices / Maxim Integrated MAX16056-MAX16059 Nanopower Supervisory Circuits

Analog Devices MAX16056, MAX16057, MAX16058, and MAX16059 Nanopower Supervisory Circuits are ultra-low-current microprocessor supervisory circuits that monitor a single system supply voltage. These devices assert an active-low reset signal whenever the V_CC supply voltage drops below the factory-trimmed reset threshold, manual reset is pulled low, or the watchdog timer runs out (MAX16056 and MAX16058). The reset output remains asserted for an adjustable reset timeout period after V_CC rises above the reset threshold. Factory-trimmed reset threshold voltages are offered from 1.575V to 4.625V in approximately 100mV increments. These devices feature adjustable reset and watchdog timeout using external capacitors. The MAX16056 and MAX16058 contain a watchdog timer with a watchdog select input (WDS) that multiplies the watchdog timeout period by 128. The MAX16057 and MAX16059 do not have the watchdog feature. These devices are available in either push-pull or open-drain output-type configurations.

The Analog Devices MAX16056 and MAX16058 are offered in an 8-pin TDFN package, and the MAX16057 and MAX16059 are offered in a 6-pin TDFN package. These devices are fully specified over the -40°C to +125°C automotive temperature range.

Features

Ultra-low 125na supply current
1.1V to 5.5V operating supply range
Configurable circuit enables flexible designs
Factory-set reset threshold options from 1.575V to 4.625V in approximately 100mV increments
Capacitor-adjustable reset timeout
Capacitor-adjustable watchdog timeout (MAX16056 and MAX16058)
Watchdog timer capacitor open detect function
Optional watchdog disable function (MAX16056 and MAX16058)

Manual-reset input
Push-pull or open-drain active-low reset output options
Power-supply transient immunity
Guaranteed active-low RESET valid for V_CC ≥ 1.1V
-40°C to +125°C operating temperature range
Package options
- MAX16057 and MAX16059: TDFN-6 package
- MAX16056 and MAX16058: TDFN-8 package