MAX6706SKA+

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The MAX6706SKA+ is a two-channel supervisor with watchdog and manual reset from Maxim Integrated. The device includes two independent undervoltage (UV) watchdog circuits with independent programming pins, providing design flexibility and reliable system operation. The MAX6706SKA+ can be used in various general-purpose applications, including power-supply sequencing, initialization of system memory, system power-on reset, and monitoring and correction of battery levels.

Features

• Two independent undervoltage (UV) circuits with independent programming pins
• Programmable reset output delay
• Optional manual reset input (MR) with programmable delay
• Programmable reset output pulse duration
• Power-on reset (POR) with built-in delay
• Low power-down current (I_PD): ­4µA max
• Enhanced ESD-protection technology
• Operating temperature range: -40°C to +125°C
• Compatible with both 5V and 3.3V CMOS logic
• Reads 1.2V and higher input voltages
• Package: 8-pin SOIC

Applications

• Power-supply monitoring and sequencing
• Initialization of system memory
• Battery-level monitoring and corrections
• System power-on reset
• Portable electronic systems

Working Principle

The MAX6706SKA+ is a two-channel supervisor with watchdog and manual reset, providing system power-on reset. The device enables power-supply monitoring and sequencing, initialization of system memory, and correction of battery levels in portable electronic systems. The device includes two independent undervoltage (UV) watchdog circuits with independent programming pins, providing design flexibility and reliable system operation. The MAX6706SKA+ monitors two power supplies - V _MON1 and V _MON2 - and initiates an independent reset output when the user-defined minimum threshold is exceeded.

The UV threshold level can be programmed to a value between 1.20V and 5.50V. The device features two independent delay times - minimum reset output delay (t_D(R) ) and minimum manual reset input delay (t_D(MR) ) - which can be programmed using an external capacitor. The minimum t_D(R) is equal to the device’s input-output propagation delay. The reset output pulse width (t_PWH ) is programmable and can be extended up to 180ms with an external capacitor. The MAX6706SKA+ also includes an internal power-on reset (POR), which provides an independent reset pulse that is active for at least 100ms after V _DD rises above the power-on voltage threshold.

The MAX6706SKA+ combines low power-down current and functioning at a wide range of temperatures with its small size and enhanced ESD-protection technology. The device is fully specified over the temperature range of -40°C to +125°C to provide reliable operation in even the most severe conditions.

Conclusion

The MAX6706SKA+ is a two-channel supervisor with watchdog and manual reset from Maxim Integrated. With its two independent undervoltage (UV) watchdog circuits with independent programming pins and low power-down current, the device provides design flexibility and reliable system operation. The MAX6706SKA+ can be used in various general-purpose applications, including power-supply sequencing, initialization of system memory, system power-on reset, and monitoring and correction of battery levels. The device is an ideal choice for portable electronic systems operating in both extreme and mild temperature environments.

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