MAX16059 Datasheet | Maxim Integrated

19-4686; Rev 0; 6/09 .. 125n A Supervisory Circuits with Capacitor Adjustable Reset and Watchdog Timeouts General Description The MAX16056- MAX16059 are ultra-low-current 125n A (typ) microprocessor (µP) 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/MAX16058). The reset output remains asserted for an adjustable reset timeout period after V CC rises above the reset threshold. Factorytrimmed reset threshold voltages are offered from 1.575V to 4.625V in approximately 100m V increments (see Table 1). These devices feature adjustable reset and watchdog timeout using external capacitors. The MAX16056/ MAX16058 contain a watchdog timer with a watchdog select input (WDS) that multiplies the watchdog timeout period by 128. The MAX16057/MAX16059 do not have the watchdog feature. The MAX16056- MAX16059 are available in either pushpull or open-drain output-type configurations (see the Ordering Information and Selector Guide). These devices are fully specified over the -40°C to +125°C automotive temperature range. The MAX16056/MAX16058 are available in the 8-pin TDFN package, and the MAX16057/ MAX16059 are available in the 6-pin TDFN package. Features o Ultra-Low 125n A (typ) Supply Current o 1.1V to 5.5V Operating Supply Range o Factory-Set Reset Threshold Options from 1.575V to 4.625V in Approximately 100m V Increments o Capacitor-Adjustable Reset Timeout o Capacitor-Adjustable Watchdog Timeout (MAX16056/MAX16058) o Watchdog Timer Capacitor Open Detect Function o Optional Watchdog Disable Function (MAX16056/MAX16058) o Manual Reset Input o Guaranteed RESET Valid for VCC ≥ 1.1V o Push-Pull or Open-Drain RESET Output Options o Power-Supply Transient Immunity o Small, 3mm x 3mm TDFN Package MAX16056- MAX16059 Ordering Information PART PINPACKAGE...