DS1814BR-10-U

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PMIC - Supervisors are powerful power management integrated circuit (PMIC) components that can provide a number of functions to control the power supply to a system. The DS1814BR-10-U is a supervisor optimized for multiple applications.

Features & Benefits

The DS1814BR-10-U supervisor offers numerous features and benefits to aid its application in controlling the power supply of a system. It includes two voltage supervision (VCC) pin senses, an adjustable reset output delay, an adjustable reset time-out, active high and active low clock output, and a reset pulse width . It also has an EPROM programming interface capability that allows for customized programming of voltage supervision and reset time-out levels.

The primary benefit of the DS1814BR-10-U is its ability to provide a variety of features to adapt to various system requirements. For instance, it can be configured with external resistors to establish the reset time-out and reset output delay. This makes the device ideal for use in mobile, remote, and other power sensitive applications.

The DS1814BR-10-U also offers protection functions such as undervoltage lockout protection and reset pulse width control. This ensures system reliability by preventing unsafe voltage levels, and preventing excessive over-voltage. Additionally, the device includes an optional temperature-proof reset function which can be enabled through a hardware pin selection.

Applications

The DS1814BR-10-U supervisor can be used in a variety of applications. It is particularly suitable for mobile and remote systems such as wireless audio devices and portable medical equipment, as it can help to ensure that the correct voltage and power levels are maintained.

The supervisor can also be used in powering systems such as those utilizing point of load distributed power architectures. Here the supervisor provides efficient power management and reset control functionality. Additionally, the supervisor can be used in more general applications such as embedded systems, computer systems, and automotive systems.

Working Principle

The DS1814BR-10-U supervisor operates on the principle of monitoring and maintaining the voltages of different circuits. At power up, the device immediately begins monitoring the voltage at its two VCC pins and asserts a signal at the reset output from 100mS after power has been applied. If during normal operation either of the VCC pins drops below the reset threshold voltage, the device will output a signal to reset the system.

The reset output can be further configured by adding a variable time-out set with external resistors. This allows the reset pulse width to be tailored, providing additional protection for the system. In addition, the supervisor has an internal temperature sensor which, when combined with an external temperature-limit device, can provide temperature-proof reset capability.

Conclusion

The DS1814BR-10-U supervisor is an excellent choice for power management applications in battery-powered, mobile, remote, and other power sensitive systems. Its wide range of features and benefits, such as voltage monitoring, adjustable reset output delay, adjustable reset time-out, active high and active low clock output, EPROM programming interface, and temperature-proof reset aiding in reliable system operation. By monitoring and managing the voltage within the system, the DS1814BR-10-U helps to ensure system stability.

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