MAX6804US29D1+T

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MAX6804US29D1+T is a supervisor from the PMIC-Supervisors category. It is a dual-supply reset generator that monitors both the main power supply and a backup supply. It provides the necessary circuits to reset a low power microcontroller or microprocessor in case of a system fault or power fault.

MAX6804US29D1+T features

The MAX6804US29D1+T features an adjustable threshold voltage, up to 5V. Its output can be pre-programmed to respond at voltages as low as 0.5V to as high as 3.5V. It also features a low voltage dropout of 0.24V, which makes it ideal for applications in which a very low voltage is monitored. The MAX6804US29D1+T also has an input current of 0.3uA and is supplied in SOT-23-5 and SC70-6 packages for applications with very low quiescent current.

In addition, the MAX6804US29D1+T has an active-low open-drain RESET output that goes low during power failure or system fault. A manual reset input is also included for resetting the device from a remote location. This reset generator also includes a watchdog timer, which is used to reset the system after a configurable period of time, in case of system lockup.

MAX6804US29D1+T application field

The MAX6804US29D1+T is ideal for various applications, such as embedded controllers, medical instruments, modems, and solid-state drives. It is especially useful for applications which require reliable circuit operation on a low voltage system, such as in laptop computers, PDAs, digital power supplies, mobile phones, and digital cameras.

The MAX6804US29D1+T can also be used to provide reset signals for supervisory applications. It is commonly used in systems that require multiple power supplies, such as surge protection circuits, and battery-backed controllers. It is also useful for providing reset signals in embedded microcontrollers and microprocessors, ensuring reliable system operation.

MAX6804US29D1+T working principle

The MAX6804US29D1+T functions by monitoring the voltage of two power supplies, the main power and the backup supply. When the input voltage drops below a preset level, the Reset output is driven low, triggering a system or power fault. The RESET output of the MAX6804US29D1+T is level-triggered. This means that once the output passes the threshold voltage, the RESET output is immediately activated. After the fault is corrected, the reset is de-asserted and the system is ready to operate again.

The watchdog timer of the MAX6804US29D1+T is used for resetting the system, in case of system lockup, after a preset period of time. The MAX6804US29D1+T also features an adjustable timeout period and reset output logic, which can be pre-programmed to include or exclude a reset pulse. The MAX6804US29D1+T also supports soft-start, which helps minimize system inrush current.

Conclusion

The MAX6804US29D1+T is a reliable and efficient supervisor, perfect for applications where reliability and accuracy are a must. It features an adjustable threshold voltage, a low voltage drop-out of 0.24V, a manual reset input and a watchdog timer for system lock-up. It is especially useful for low-voltage systems with multiple power sources and for providing reset signals in embedded controllers and microprocessors, ensuring reliable operation of the system.

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