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MAX16033, MAX16034, MAX16035, MAX16036, MAX16037, MAX16038, MAX16039, MAX16040
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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Status
Active: In Production.
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.
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Data Sheet
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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
- Underwriters Laboratories (UL) Recognized
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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
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Key Specifications:
| Battery Backup Circuits |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
ICC
(µA) |
Features |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max |
max w/pins |
See Notes |
| MAX16033 |
| 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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| Active Low | | Open Drain | | Push-Pull |
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50 |
| Chip Enable Gate | | Manual Reset | | Power Fail Comparator |
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-40 to +85 |
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4.2 |
$2.00 @1k |
| MAX16034 |
| Chip Enable Gate | | Power Fail Comparator | | Watchdog |
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$2.09 @1k |
| MAX16035 |
| Battery On | | Chip Enable Gate | | Power Fail Comparator |
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$2.09 @1k |
| MAX16036 |
| Adjustable Reset Input | | Chip Enable Gate | | Power Fail Comparator |
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$2.09 @1k |
| MAX16037 |
| Manual Reset | | Power Fail Comparator |
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$2.09 @1k |
| MAX16038 |
| Power Fail Comparator | | Watchdog |
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$2.09 @1k |
| MAX16039 |
| Battery On | | Power Fail Comparator |
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$2.09 @1k |
| MAX16040 |
| Adjustable Reset Input | | Power Fail Comparator |
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$2.09 @1k |
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See All Battery Backup Circuits (86)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-0882
Rev 0;
2007-08-22
This page last modified: 2007-11-28
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