TLC7701QDRG4

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The TLC7701QDRG4 is a precision quad voltage supervisor IC, which provides microprocessor and microcontroller-based systems with supervisory fault protection. It is an ideal choice for PMIC (Power Management Integrated Circuit) applications providing reset, detection and prevention of system lockups and malfunction.

The TLC7701QDRG4 device is designed utilizing a dedicated low-power CMOS process and is rated to operate over the temperature range of -40°C to +85°C. Its programmable reset output provides four reset with power-on reset generator independent supply voltage monitoring, voltage detection, and supervisory circuit functions with minimum power consumption for optimal performance. It has been designed as a competitive choice for systems in industrial, commercial and residential applications.

Working Principle

The TLC7701QDRG4 operates in a very simple way. First, the user sets a voltage threshold which the IC then compares to the supply voltage. This could be powered by a single supply, dual supply or multiple supplies.

Once the supply voltage drops below the set threshold, the chip triggers a reset output on any of its four pins based on the parameters set during chip configuration. Depending on the user’s application, the reset output can be active-low or active-high.

The trigger levels are then compared to an internal reference voltage to provide the user with a voltage adjustment sensitivity equivalent of ±1.5%. This internal reference voltage is quite stable, even in a load transient condition where the supply voltage might vary quickly and widely. This ensures that the reset output will be triggered in a timely manner even when the supply voltage is varying quickly.

For further protection, the device is equipped with a small temperature sensor and hysteresis circuit which helps it to reset in case of an overheating event. This safeguards against system resets caused by high temperatures, enabling the user to operate the device with confidence in any kind of environment.

Application Fields

The TLC7701QDRG4 has a wide range of applications. It can be used for supervisory reset and power supply control in all types of microprocessor systems. These include PC motherboards, graphics cards, communication systems, industrial devices and embedded systems.

The flexibility of the chip allows it to be configured to operate at multiple power levels. This feature can be a great advantage in applications where multiple supply voltages must be monitored simultaneously. For example, in a server or data-storage system, the chip can be set up to monitor three different supply voltages at the same time.

The device is also excellent for over-voltage protection. It can be configured to detect voltages that exceed certain thresholds, such as a surge in power, and shut down all attached components and systems to protect them from damage.

The TLC7701QDRG4 is an ideal choice for any embedded system that requires high-performance voltage monitoring, reset and protection. It is widely used in industrial and commercial applications, and has become an essential part of the modern system design toolset.

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