APX810S05-29SA-7

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Power Management Integrated Circuits (PMICs) are an integral component of a variety of electronic applications. PMICs provide a essential power solution for the entire system or individual circuits. They are designed to supply, manage and regulate the electrical power used by different subsystems and their associated components. PMICs are available in a wide array of power consumption and performance levels. Supervisors, which form a specialty subgroup within the PMIC class of integrated circuits, are specialized solutions that monitor power, reset, power-up sequencing and other timing functions for safety and reliability. Many of these supervisors are designed to provide feature-rich solutions for specific applications.

The APX810S05-29SA-7 is an example of a specialized supervisor from Diodes Inc. This supervisor provides reliable current loop protection and precise adjustable overvoltage and undervoltage protection within an area- and cost-efficient 6-pin SOT-23 package. It is designed to partner with the ANS1015 device to monitor boundary conditions on consumer and industrial products, automotive applications and a range of other power-monitoring applications. This supervisor combines overvoltage protection (VOVLO) and adjustable undervoltage protection with hysteresis (VUVLO), programmable reset and a low-voltage lockout (UVLO) to provide reliable and precise system monitoring.

Application Field

The APX810S05-29SA-7 is an ideal solution to monitor and protect a wide range of consumer and industrial products. It provides a precise reset threshold and a two-level adjustable undervoltage monitoring with a hysteresis. This makes it ideal for use in a variety of applications such as kitchen appliances, automotive, medical and HVAC systems. The combined precision and low current draw of the APX810S05-29SA-7 makes it suitable for monitoring the voltage levels of both primary and secondary power sources. It also provides a key-off lockout feature that prevents system power from being enabled below a pre-defined threshold.

The APX810S05-29SA-7 is designed for inrush current loop protection and overvoltage protection. It is also very useful for providing protection against sudden power or voltage dropouts or surges. For example, it is particularly useful in automotive and HVAC applications where voltage spikes or fluctuations can easily cause damage to the system. Important parameters such as the reset threshold, trip current, hysteresis and various features can be adjusted relative to the application\'s specific needs and requirements.

Working Principle

The APX810S05-29SA-7 works by monitoring two independent voltage levels, a higher overvoltage threshold (VOVLO) and a lower undervoltage threshold (VUVLO) with hysteresis. The overvoltage threshold is a fixed 5-volt value and the adjustable undervoltage threshold can be configured from a wide range of 1.2V to 5V. The supervisor also provides one or two supervisor initiating reset from an external IC, such as the ANS1015 device.

The device works by monitoring the power supply voltage and producing a logic output based on the input voltage. When the voltage is above the VOVLO threshold, the output pin is kept in high state to enable the system. When the voltage drops below the VUVLO threshold, the output pin is kept in low state and system is reset. When the voltage stays below the VUVLO threshold for a certain period of time, the supervisor interrupts the power and enters low-voltage lockout until the voltage is brought back. The device also has an adjustable open-drain reset timer threshold that is used to determine how long the voltage must remain below the VUVLO threshold before reset is triggered.

In addition to the active features mentioned above, the APX810S05-29SA-7 also provides an adjustable threshold key-off lockout feature. This feature prevents the system from being enabled below the threshold level and keeps the system in a safe low-power state.

The APX810S05-29SA-7 provides an efficient, reliable and cost-effective solution for current loop protection, overvoltage and undervoltage protection, key-off lockout and reset functions. Its small footprint and a wide range of adjustable parameters make it a very attractive solution for many power-monitoring applications.

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