APX803L40-24SA-7 Allicdata Electronics
Allicdata Part #:

APX803L40-24SA-7-ND

Manufacturer Part#:

APX803L40-24SA-7

Price: $ 0.07
Product Category:

Integrated Circuits (ICs)

Manufacturer: Diodes Incorporated
Short Description: RESET GENERATOR SOT23
More Detail: Supervisor Open Drain or Open Collector 1 Channel ...
DataSheet: APX803L40-24SA-7 datasheetAPX803L40-24SA-7 Datasheet/PDF
Quantity: 1000
3000 +: $ 0.06497
Stock 1000Can Ship Immediately
$ 0.07
Specifications
Voltage - Threshold: 2.4V
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3
Supplier Device Package: SOT-23
Series: --
Packaging: Tape & Reel (TR) 
Part Status: Active
Type: Simple Reset/Power-On Reset
Number of Voltages Monitored: 1
Output: Open Drain or Open Collector
Reset: Active Low
Reset Timeout: 292 ms Minimum
Description

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PMIC - Supervisors : APX803L40-24SA-7

As a supervisor integrated circuit, the APX803L40-24SA-7 (henceforth \'IC\') is used to detect and store failures caused by transient voltages, thereby safeguarding the system’s function by resetting it when these failures are detected. These failures may occur in the form of supply voltage below a reset threshold, an input power supply going over a fail threshold, or watch-dog timers expiring.

Application Field

The APX803L40-24SA-7 IC is chiefly used in electronic devices that employ embedded microcontrollers and system-on-chip (SOC) technology. This is because complex microcontroller- or SOC-based devices, such as those found in home appliances or security systems, often require a supervisor for their proper and safe operation. Supervisors are used in such devices to monitor the operating conditions from the microcontroller or SOC and thus reset the system when a pre-set operating condition is violated.

The APX803L40-24SA-7 IC is specifically designed to deliver robust fail-safe functionality while being transitorily exposed to elevated voltages up to 24V. Such transient voltages may be caused by static power surges or other sources of noise, and are commonly found in automotive, industrial, communication and consumer applications. As such, the APX803L40-24SA-7 is suitable for use in those applications where it is necessary to ensure the safety of the embedded microcontroller or SOC by avoiding potential fault conditions. The IC is also used in a variety of other applications, such as in consumer and office automation devices, motors and power supplies, charging devices, security systems and automotive electronics, and in these cases can help protect costly systems or components from damage or malfunction.

Functionality and Working Principle

The APX803L40-24SA-7 IC operates by monitoring the supply voltage of the system and comparing it to a pre-set ‘fail’ level. Additionally, the IC monitors an external signal that provides the microcontroller or SOC with a reset signal, and the IC will reset the microcontroller or SOC when this external voltage drops below a pre-set ‘reset’ level. There is also an internal watchdog timer that is reset every time the microcontroller or SOC executes a particular instruction. The IC will reset the microcontroller or SOC if this timer is not reset within a specified time period.

To achieve the above functionality, the APX803L40-24SA-7 IC is equipped with an on-chip, voltage-supervised precision voltage reference, a voltage detector, an overcurrent detector, and an adjustable wide-range reset and reset assertion timer. The IC also contains a watchdog reset circuit and an additional hardware reset for manual system reset. Furthermore, the IC has an enable/disable pin that allows for system shut down and enables/disables reset signaling.

Finally, the IC features built-in protection from voltage spikes, which is achieved by employing a combination of high-side and low-side voltage detection inputs and an active clamp connected between the supply and ground. This active clamp prevents non-intentional reset requests from the microcontroller or SOC.

In summary, the APX803L40-24SA-7 is a supervisor IC used in embedded microcontroller and system-on-chip systems to provide robust fail-safe functionality and to protect these systems and components from damage or malfunction. It provides an adjustable wide-range reset and reset assertion timer, an internal watchdog reset circuit, an enable/disable pin and an active clamp protection circuit that ensures that unintentional reset requests are not generated.

The specific data is subject to PDF, and the above content is for reference

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