TLC7733QDRG4

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The TLC7733QDRG4 is a MicroPower, Quad Low-Voltage Supervisory Circuit manufactured by TI, designed to monitor four regulated negative supply voltages as low as 1.6V. It has a very low power consumption of 800nA typ, comes in a compact 4.1mm x 3mm 0.4PQFN package and operates over the temperature range of -40°C to 85°C. Therefore, the TLC7733QDRG4 is suitable for use in space-constrained applications and in temperatures outside of normal operating range.

As a PMIC - Supervisors, the TLC7733QDRG4 combines a supervisory circuit, a watchdog timer, system reset, supply voltage monitoring and timeout features into a single package. It provides four independent channels for monitoring, each with an adjustable threshold trip point programmable via a single resistor that sets the trip point between 1.6V and VDD. The on-chip voltage supervisor also provides a 180ms reset timeout after a power-on reset, which can be canceled in dedicated mode. The TLC7733QDRG4 can generate reset signals in either open-drain or active-high operation mode.

The TLC7733QDRG4 is an ideal choice for monitoring and regulating the supply voltage of analog, RF, logic and other sensitive circuitry in microprocessor-based systems. It can be utilized in power supplies, monitor power supplies, battery management, voltage regulators, motor control systems and other applications where low power and low-voltage control and supervision are necessary. Due to its temperature operating range and micro power consumption, it is perfect for battery powered systems, where long operational time is a requirement.

The working principle of the TLC7733QDRG4 is based on a voltage-comparator architecture. It monitors four regulated power supplies and triggers the master reset signal after the voltage of any power supplies falls below the pre-programmed voltage threshold point. The reset signal can be either an open-drain signal or an active-high logic signal, indicated by the reset time-out delay, which is programmed using an external resistor. The TLC7733QDRG4 also includes a watchdog timer to monitor the MCU\'s activity. The watchdog timer can be programmed to generate a reset pulse if the master reset signal is not activated in a pre-determined time period.

The TLC7733QDRG4 provides a reliable protection solution for industrial, automotive and consumer applications. It is designed to ensure that the power supply meets the operating requirements of the device to prevent performance variations due to excessive voltage drop or excessive voltage rise. The device can also monitor the power cycle of individual power domains and alert the user of any power anomalies that could damage the system.

Overall, the TLC7733QDRG4 is an exceptionally reliable supervisory circuit offering a simple solution for the monitoring and regulation of the supply voltage of various devices. Its low power consumption and wide temperature operating range make it suitable for various applications and its wide range of features makes it a safe and efficient choice for power supplies. Therefore, the TLC7733QDRG4 is an ideal device for monitoring and regulating the appropriated voltage levels in a variety of different applications.

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