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MAX16033
Low-Power Battery-Backup Circuits in Small µDFN Packages
Industry's Smallest Supervisors Offer Precision Power-Supply Monitoring with Battery Backup
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MyMaxim SubscriptionsProduct Details
The MAX16033–MAX16040 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. The devices significantly improve system reliability and accuracy compared to other ICs or discrete components. The MAX16033–MAX16040 provide µP reset, backup-battery switchover, power-fail warning, watchdog, and chip-enable gating features.
The MAX16033–MAX16040 operate from supply voltages up to 5.5V. The factory-set reset threshold voltage ranges from 2.32V to 4.63V. The devices feature a manual-reset input (MAX16033/MAX16037), a watchdog timer input (MAX16034/MAX16038), a battery-on output (MAX16035/MAX16039), an auxiliary adjustable reset input (MAX16036/MAX16040), and chip-enable gating (MAX16033–MAX16036). Each device includes a power-fail comparator and offers an active-low push-pull reset or an active-low open-drain reset.
The MAX16033–MAX16040 are available in 2mm x 2mm, 8-pin or 10-pin µDFN packages and are fully specified from -40°C to +85°C.
The MAX16033–MAX16040 operate from supply voltages up to 5.5V. The factory-set reset threshold voltage ranges from 2.32V to 4.63V. The devices feature a manual-reset input (MAX16033/MAX16037), a watchdog timer input (MAX16034/MAX16038), a battery-on output (MAX16035/MAX16039), an auxiliary adjustable reset input (MAX16036/MAX16040), and chip-enable gating (MAX16033–MAX16036). Each device includes a power-fail comparator and offers an active-low push-pull reset or an active-low open-drain reset.
The MAX16033–MAX16040 are available in 2mm x 2mm, 8-pin or 10-pin µDFN packages and are fully specified from -40°C to +85°C.
Key Features
- Low 1.2V Operating Supply Voltage
- Precision Monitoring of 5.0V, 3.3V, 3.0V, and 2.5V Power-Supply Voltages
- Independent Power-Fail Comparator
- Debounced Manual-Reset Input
- Watchdog Timer, 1.6s Timeout
- Battery-On Output Indicator
- Auxiliary User-Adjustable RESETIN
- Low 13µA Quiescent Supply Current
- Two Available Output Structures:
- Active-Low Push-Pull Reset
- Active-Low Open-Drain Reset
- Active-Low Reset Valid Down to 1.2V
- Power-Supply Transient Immunity
- 140ms (min) Reset Timeout Period
- Small 2mm x 2mm, 8-Pin and 10-Pin µDFN Packages
Applications/Uses
- Portable/Battery-Powered Equipment
- POS Equipment
- Critical µP/µC Power Monitoring
- Set-Top Boxes
- Controllers
- Computers
- Fax Machines
- Industrial Control
- Real-Time Clocks
- Intelligent Instruments
Parametric specs for Battery Backup Circuits
| Reset Thresh. (V) | 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5 |
| Reset Out | Active Low Open Drain Push-Pull |
| ICC (µA) (max) | 50 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | UDFN/10 |
| Budgetary Price (See Notes) | $2.49 @1k |
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Technical Docs
| Data Sheet | Low-Power Battery-Backup Circuits in Small µDFN Packages | Sep 10, 2019 | |
| Tutorial | Improve Sensor Performance and SNR in Pulse Oximeter Designs |
Click any title below to view the detail page where available.
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Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Parameters
Parametric specs for Battery Backup Circuits
| Reset Thresh. (V) | 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5 |
| Reset Out | Active Low Open Drain Push-Pull |
| ICC (µA) (max) | 50 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | UDFN/10 |
| Budgetary Price (See Notes) | $2.49 @1k |
Key Features
- Low 1.2V Operating Supply Voltage
- Precision Monitoring of 5.0V, 3.3V, 3.0V, and 2.5V Power-Supply Voltages
- Independent Power-Fail Comparator
- Debounced Manual-Reset Input
- Watchdog Timer, 1.6s Timeout
- Battery-On Output Indicator
- Auxiliary User-Adjustable RESETIN
- Low 13µA Quiescent Supply Current
- Two Available Output Structures:
- Active-Low Push-Pull Reset
- Active-Low Open-Drain Reset
- Active-Low Reset Valid Down to 1.2V
- Power-Supply Transient Immunity
- 140ms (min) Reset Timeout Period
- Small 2mm x 2mm, 8-Pin and 10-Pin µDFN Packages
Applications/Uses
- Portable/Battery-Powered Equipment
- POS Equipment
- Critical µP/µC Power Monitoring
- Set-Top Boxes
- Controllers
- Computers
- Fax Machines
- Industrial Control
- Real-Time Clocks
- Intelligent Instruments
Description
The MAX16033–MAX16040 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. The devices significantly improve system reliability and accuracy compared to other ICs or discrete components. The MAX16033–MAX16040 provide µP reset, backup-battery switchover, power-fail warning, watchdog, and chip-enable gating features.
The MAX16033–MAX16040 operate from supply voltages up to 5.5V. The factory-set reset threshold voltage ranges from 2.32V to 4.63V. The devices feature a manual-reset input (MAX16033/MAX16037), a watchdog timer input (MAX16034/MAX16038), a battery-on output (MAX16035/MAX16039), an auxiliary adjustable reset input (MAX16036/MAX16040), and chip-enable gating (MAX16033–MAX16036). Each device includes a power-fail comparator and offers an active-low push-pull reset or an active-low open-drain reset.
The MAX16033–MAX16040 are available in 2mm x 2mm, 8-pin or 10-pin µDFN packages and are fully specified from -40°C to +85°C.
The MAX16033–MAX16040 operate from supply voltages up to 5.5V. The factory-set reset threshold voltage ranges from 2.32V to 4.63V. The devices feature a manual-reset input (MAX16033/MAX16037), a watchdog timer input (MAX16034/MAX16038), a battery-on output (MAX16035/MAX16039), an auxiliary adjustable reset input (MAX16036/MAX16040), and chip-enable gating (MAX16033–MAX16036). Each device includes a power-fail comparator and offers an active-low push-pull reset or an active-low open-drain reset.
The MAX16033–MAX16040 are available in 2mm x 2mm, 8-pin or 10-pin µDFN packages and are fully specified from -40°C to +85°C.
Technical Docs
| Data Sheet | Low-Power Battery-Backup Circuits in Small µDFN Packages | Sep 10, 2019 | |
| Tutorial | Improve Sensor Performance and SNR in Pulse Oximeter Designs |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
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