MAX6729

PRODUCTION

MAX6729

Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits

PRODUCTION

MAX6715, MAX6716, MAX6717, MAX6718, MAX6719, MAX6720, MAX6721, MAX6722, MAX6723, MAX6724, MAX6725, MAX6726, MAX6727, MAX6728, MAX6729: Typical Operating Circuit slide

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Part Models 2

1ku List Price Starting From $4.20

Features

V_CC1 (primary supply) Reset Threshold Voltages from 1.58V to 4.63V
V_CC2 (secondary supply) Reset Threshold Voltages from 0.79V to 3.08V
Externally Adjustable RSTIN Threshold for Auxiliary/Triple-Voltage Monitoring (0.62V internal reference)
Watchdog Timer Option
- 35s (min) Long Startup Period
- 1.12s (min) Normal Timeout Period
Manual Reset Input Option
Power-Fail Input/Power-Fail Output Option (Push-Pull and Open-Drain Active-Low)
Guaranteed Reset Valid Down to V_CC1 or V_CC2 = 0.8V
Reset Output Logic Options
Immune to Short V_CC Transients
Low Supply Current 14µA (typ) at 3.6V
Small 5, 6, and 8-Pin SOT23 Packages

Additional Details

The MAX6715-MAX6729 are ultra-low-voltage microprocessor (µP) supervisory circuits designed to monitor two or three system power-supply voltages. These devices assert a system reset if any monitored supply falls below its factory-trimmed or adjustable threshold and maintain reset for a minimum timeout period after all supplies rise above their thresholds. The integrated dual/triple supervisory circuits significantly improve system reliability and reduce size compared to separate ICs or discrete components.

These devices monitor primary supply voltages (V_CC1) from 1.8V to 5.0V and secondary supply voltages (V_CC2) from 0.9V to 3.3V with factory-trimmed reset threshold voltage options (see Reset Voltage Threshold Suffix Guide). An externally adjustable RSTIN input option allows customers to monitor a third supply voltage down to 0.62V. These devices are guaranteed to be in the correct reset output logic state when either V_CC1 or V_CC2 remains greater than 0.8V.

A variety of push-pull or open-drain reset outputs along with watchdog input, manual reset input, and power-fail input/output features are available (see Selector Guide). Select reset timeout periods from 1.1ms to 1120ms (min) (see Reset Timeout Period Suffix Guide). The MAX6715-MAX6729 are available in small 5, 6, and 8-pin SOT23 packages and operate over the -40°C to +85°C temperature range.

Applications

Computers/Servers
Industrial Equipment
Multivoltage Systems
Portable Battery-Powered Equipment
Printers and Faxes
Set-Top Boxes
Telecom/Networking Equipment

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

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Ask the ADI community for help.

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FAQs

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Part Models 2

1ku List Price Starting From $4.20

Technical Documents 3

MAX6715-MAX6729: Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits Data Sheet (Rev.5) 03/27/2006

MAX6729 Reliability Data 01/12/2023

Watchdogs Improve System Reliability—How to Choose the Right Part 03/26/2003

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX6729KALTD3+	Small-Outline Transistor Package	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX6729KALTD3+T	Small-Outline Transistor Package	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

MAX6729KALTD3+
Pin/Package Drawing
Small-Outline Transistor Package
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX6729KALTD3+T
Pin/Package Drawing
Small-Outline Transistor Package
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Companion Parts 14

Parts	Product Life Cycle	Description
Dual-Supply Monitors4
MAX6826	PRODUCTION	Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6828	PRODUCTION	Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6829	PRODUCTION	Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6831	PRODUCTION	Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
Product3
MAX6702		Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
MAX6827		Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6830		Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
Single-Supply Monitors5
MAX6704	PRODUCTION	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
MAX6705	PRODUCTION	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
MAX6706	Obsolete	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
MAX6707	PRODUCTION	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
MAX6708	PRODUCTION	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
Triple-Supply Monitors2
MAX6701	PRODUCTION	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
MAX6703	PRODUCTION	Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer