MAX16057:125nA Supervisory Circuits with Capacitor-Adjustable Reset and Watchdog Timeouts

Capacitor-Adjustable Nanopower Supervisory Circuits

The MAX16056–MAX16059 are ultra-low-current 125nA (typ) microprocessor (µP) supervisory circuits that monitor a single system supply voltage. These devices assert an active-low reset signal whenever the VCC 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 VCC rises above the reset threshold. Factory-trimmed reset threshold voltages are offered from 1.575V to 4.625V in approximately 100mV increments (see Table 1 in the full data sheet). 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 push-pull or open-drain output-type configurations (see the Ordering Information in the full data sheet). 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.

Key Features
  • Reduced Power Requirements
    • Ultra-Low 125nA (typ) 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/MAX16058)
    • Watchdog Timer Capacitor Open Detect Function
    • Optional Watchdog Disable Function (MAX16056/MAX16058)
    • Manual-Reset Input
    • Push-Pull or Open-Drain Active-Low RESET Output Options
  • Integrated Features Increases System Robustness
    • Power-Supply Transient Immunity
    • Guaranteed Active-Low RESET Valid for VCC ≥ 1.1V
  • Saves Board Space
    • 3mm x 3mm TDFN Package
MAX16056, MAX16057, MAX16058, MAX16059: Typical Operating Circuit
MAX16056, MAX16057, MAX16058, MAX16059: Typical Operating Circuit
Applications/Uses
  • Glucose Monitors/Patient Monitors
  • Metering/HVAC
  • MP3 Players/Pagers
  • PDAs/Cell Phones
  • Portable/Battery-Powered Equipment
DataSheet
titleDownload file
MAX16056-MAX16059 Data SheetMAX16056-MAX16059.pdf
Parametrics
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX160561.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
AdjustableCap Adjustable
Input (WDI)
AdjustableManual Reset2.50.125TDFN-EP/8$1.97 @1k
MAX16057Active Low
Push-Pull
No Watchdog-TDFN-EP/6$1.56 @1k
MAX16058Active Low
Open Drain
Cap Adjustable
Input (WDI)
AdjustableTDFN-EP/8$1.76 @1k
MAX16059Active Low
Open Drain
No Watchdog-TDFN-EP/6$1.56 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX16057ATT16+ActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT16+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT17+ActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT17+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT18+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT19+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT20+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT21+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT22+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT23+ActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX16057ATT23+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT24+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT25+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT26+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT27+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT28+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT29+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT30+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT31+ActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT31+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX16057ATT32+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT33+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT34+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT35+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT36+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT37+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT38+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT39+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT40+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT41+TActiveTDFN;-40°C to +125°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX16057ATT42+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT43+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT44+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT45+TActiveTDFN;-40°C to +125°CSee data sheet
MAX16057ATT46+ActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16057ATT46+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +125°CLead Free
MAX16056-MAX16059.pdf MAX16059
MAX16056-MAX16059_cn.pdf MAX16059
MAX16057.pdf MAX16057
典型工作电路 MAX16059