MAX6730AUTTD3+

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Power management integrated circuits (PMICs) are crucial components in any electronic system. They provide the necessary voltage and current levels to power a given electronic system. MAX6730AUTTD3+ is a part of this PMIC family and was introduced by Maxim Integrated. This part is a supervisory circuit with two ±1% accurate outputs, and a signal/load input to detect circuit open/short, AC line voltage sag, drop-out, power surges, brown-out, and over-voltage conditions.

The MAX6730AUTTD3+ is a microprocessor-based, power supply reset and voltage supervisory circuit, designed for single-supply, low-voltage, microcomputer systems. It has two adjustable power supply reset outputs, an active-low adjustable reset signal and un-committed N-channel MOSFET disconnect output with a reset signal that can be generated in response to power supply overvoltage, undervoltage, or open-circuit conditions. It is available in a 5-pin USON5 package. It is designed to reduce the component count, board area, and cost of controlling multiple voltages.

Features of MAX6730AUTTD3+

• Active-low reset signal with adjustable reset threshold
• Active-high reset signal with adjustable reset threshold
• Signal and load input detect circuit
• N-channel MOSFET disconnect output prevents system corruption
• Excellent reset accuracy: ±1%
• Tolerant to power supply transients
• Wide input voltage range: 2.7V to 5.5V
• Operating supply current of only 0.5µA
• Low-power shutdown mode
• Extended-temperature version available (-40°C to +125°C)

Working principle of MAX6730AUTTD3+

The reset output pins of the MAX6730AUTTD3+ are used to reset an microcontroller or microprocessor in the event of a power system fault. The device consists of two voltage supervisors, one which provides an active low (LOW_EN) output, and one that provides an active high (HIGH_EN) output.

The MAX6730AUTTD3+ is designed to detect power supply oversized, undersized, or no voltage. The power input is connected to the VDD pin and will be monitored for over/undervoltage conditions. The MAX6730AUTTD3+ monitors the input voltage and provides the reset signal to the microcontroller. When the input voltage to the VDD pin is below the undervoltage threshold or above the overvoltage threshold, the MAX6730AUTTD3+ will reset the microcontroller. The high-set input pin (HIGH_EN) will generate an active-high reset signal when the input voltage is above the overvoltage threshold. The low-set pin (LOW_EN) will generate an active-low reset signal when the input voltage is below the undervoltage threshold.

The MAX6730AUTTD3+ also has a signal/load input to detect circuit open/short, AC line voltage sag, drop-out, power surges, brown-out, and over-voltage conditions. This can be used for extra safety since it can detect an open or short in the circuit, and thereby take necessary action when such an event occurs. The signal/load input also has the ability to detect software or noise glitches and reset the microcontroller if necessary.

Application fields of MAX6730AUTTD3+

The MAX6730AUTTD3+ is used in applications that require resetting of microcontroller or microprocessor in the event of a power system fault. It is used in a wide range of applications that require accurate power monitoring and resetting, such as in wireless charging stations, battery management systems, sensors, smoke detectors, medical equipment and more. The MAX6730AUTTD3+ can also be used in automotive systems and other systems that require monitoring of multiple power supplies. It is well suited for applications where accuracy and low power are of prime importance.

Maxim Integrated\'s MAX6730AUTTD3+ power supply reset and voltage supervisory circuit is an excellent choice for applications that require accurate power monitoring and resetting. Its features, such as active-low and active-high reset outputs, signal/load input, and extended temperature range make it a versatile, robust, and cost-effective solution for many applications.

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