TL7759CPWE4

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A PMIC, or Power Management Integrated Circuit, serves as a control unit for the power circuits of a system. One example of such a PMIC is the TL7759CPWE4, an ultra-low standby current supervisor. This IC enables direct monitoring of system power, providing stable and reliable reset signals for a design.

Overview of TL7759CPWE4

The TL7759CPWE4 is a single-channel supervisor device. It is a low-power CMOS device which consists of a precision voltage detector, a power-on reset generator, and a watchdog timer and it operates down to 1.6V supplies. It functions as a system reset control and can also be used to monitor power-up/down and system health issues.

This device hosts a variety of features, including the adjustable reset-timeout programmable in 33 ms steps, active-high/active-low reset output, a precision reset threshold of 3.2V ±1.0%, an operating temperature range of -40°C to +125°C, and a low supply current of 400 nA typ. It also features an integrated pushbutton reset input, enabling user action to immediately force a reset.

Applications of TL7759CPWE4

The TL7759CPWE4 is ideal for use in many low-power applications. It is particularly suitable for use in IoT, STB, and digital audio products, as well as in healthcare, wearables, and industrial applications. Furthermore, its wide operating temperature range makes it well-suited for industrial use.

Working Principle of TL7759CPWE4

The working principle of the TL7759CPWE4 is based on the active-high/active-low reset output. The reset output is generated by the reset generator when the voltage detects the system is powered up correctly. It also sets a reset timeout in 33 ms steps, which is used to reset the system if there are no system activity during a certain period of time. When the voltage across the reset threshold levels declines to a certain degree, the device will immediately reset the system with an appropriate reset pulse width. The watchdog timer monitors the system activity and will reset the system if it is not detected.

The integrated pushbutton reset input is an important feature of this device. By pushing the button, the voltage across the reset threshold is reset and the system is restarted. This way, the user can quickly restart the system if necessary.

Conclusion

The TL7759CPWE4 is an ultra-low standby current supervisor which is designed for low-power applications. It provides a stable and reliable reset system and its integrated pushbutton reset input makes it easy for users to quickly restart the system if necessary. With its wide operating temperature range, precision reset threshold, and adjustable reset timeout the TL7759CPWE4 is a great choice for many applications.

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