MAX804TCSA+

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PMIC - Supervisors

The MAX804TCSA+ integrated circuit is an advanced voltage monitoring circuit that falls into the category of PMICs or Power Management Integrated Circuits. The MAX804TCSA+ is part of a family of voltage monitoring ICs from Maxim Integrated Products Incorporated. It is part of a group of products that include the MAX8044TCX2 and MAX8044TCL2, and the MAX8004TCS5 products. All of these ICs are used in a wide array of different applications.

The MAX804TCSA+ is an advanced voltage supervisor for advanced microprocessors and power delivery systems. The IC consists of a voltage monitor with a programmable threshold, plus a power-on reset (POR) output, and an operational power good signal. The IC is designed to detect the power supply voltage, and generate an output signal in response to it. The output signal is used to indicate whether the power supply voltage has fallen below an operating level or exceeded the upper limit. The choice of an appropriate threshold voltage can be used to control the power supply.

The IC can also be used to monitor the heat of the microprocessor system, as it can measure the temperature and trigger an alarm signal in case of an overheat or underheat situation. The IC also features an integrated watchdog timer that can reset an application when the timer expires. This can be used to detect system failures, or to reset the system when needed.

The device can operate from a wide range of input supply voltages, from 1.8V to 5.5V, and can be used for both temperature and for voltage monitoring. The total operating power for the IC is 2.2mW, and the device has an operating temperature range of 0°C ~ 70°C.

The device has an integrated 1.9V source that may be used as a programmable threshold voltage. The total variation in the output thresholds is ± 4% over the Tj range. The IC also includes a programmable voltage monitor, with adjustable alarm thresholds.

The device is capable of recognizing both leading and trailing edge transitions of a digital signal, and the programmable input pin can be used for detecting other logic levels. The logic voltage range for the IC is from 0.7V to 1.8V. The device has an adjustable power-on reset (POR) time, which can be set from 1.5ms to 256ms, depending on the setting of the POR counter.

The device also includes overvoltage and undervoltage protection functions. It has a ‘Maximum Voltage Monitor’ feature that monitors the supply voltage against a programmable trip point, and shuts down the system if the voltage goes above the set level. The IC also has an ‘Undervoltage Lockout’ (UVLO) which monitors the supply voltage against a programmable voltage, and locks out the system if the voltage goes below the set level.

The device has an active interrupt (AI) feature, which is used to assert an interrupt when a certain event occurs. This can be used to protect against power supply instability. The AI function can be programmed to detect different levels, such as falling edge, rising edge, pulse, or several combination of levels.

The IC includes a power-good indicator with a programmable delay, and a power good filter. The power-good indicator works as a latching circuit, latching when either an undervoltage (UV) or an overvoltage (OV) condition is detected. The latching status is indicated by a logic high output.

The MAX804TCSA+ can be used in a wide range of applications, such as embedded systems, industrial equipment, mobile devices, telecom equipment, and medical equipment. It is designed to handle power supply voltages ranging from 1.8V to 5.5V, and can be used to protect processors and other components from power supply instabilities. This makes the MAX804TCSA+ an ideal choice for a voltage supervisor in any system.

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