MAX822LUS+T

Series:	--
Packaging:	Strip
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active High
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	4.63V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-253-4, TO-253AA
Supplier Device Package:	SOT-143-4
Base Part Number:	MAX822

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Introduction

MAX822LUS+T is a supervisor IC (Integrated Circuit) that is used in power management integrated circuit (PMIC) applications. This IC is capable of detecting undervoltage (UV) or overvoltages (OV) conditions in power supply designs. This infrared LED enables the LED to detect snapback of an external N-channel MOSFET, helping in power-supply sequencing. This IC is an adjustable voltage monitor that you can use to monitor the output and provides an over-temperature protection (OTP) feature. It includes adjustable set points for under- and overvoltage, as well as a push-pull or open drain output for UV and UV-L (UV Latched) alarm. This IC also has a low quiescent current and wide operating range, making it ideal for low-power solutions. The low off-state supply current enables the IC to work in battery-powered systems while reducing system current consumption in standby mode.

Features

The MAX822LUS+T has a maximum operating temperature range of -40°C to +125°C and a package size of 6mm x 10mm (1.75mm). It is also RoHS compliant and halogen free. It has an overvoltage tolerance of up to 18V and an undervoltage detection level of up to 3.2V. This IC has an adjustable UV level from 2.76V to 5.00V, making it suitable for a variety of applications requiring precision power management. In addition, this IC features a maximum current consumption of 8uA and a minimum guaranteed surge current of 0.1mA.

Applications

The MAX822LUS+T is ideal for many applications requiring precision power management. This includes automotive, industrial, computer and telecommunications systems, providing enhanced reliability and protection. This IC can also be used in a wide range of medical, military and leisure applications, offering reliable safety and protection. Additionally, this IC is suitable for use in audio systems, providing a stable high performance power supply.

Work Principle

The MAX822LUS+T uses an infrared LED to detect snapback of an external N-channel MOSFET and test the MOSFET functionality. When a snapback is detected, the LED activates or deactivates the positive voltage rail protection circuit. This process helps regulate the power supply voltage, preventing any overvoltage conditions from happening. This IC also features an adjustable undervoltage level along with a UV-L alarm output that can be used to indicate the presence of an undervoltage condition. When triggered, this alarm can be used to send a signal to a microcontroller, telling it to take corrective action.

Conclusion

The MAX822LUS+T is a reliable, high performance IC designed for precision power management applications. This IC features an adjustable UV level from 2.76V to 5.00V, a UV-L alarm output, overvoltage tolerance of up to 18V and a maximum operating temperature range of -40°C to +125°C. It is suitable for use in a variety of applications, providing reliable safety and protection. Additionally, this IC includes an infrared LED that enables the device to detect snapback of an external N-channel MOSFET, helping regulate the power supply. With its adjustable set points and a low quiescent current, the MAX822LUS+T is a great choice for low-power solutions.

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