TLC7725IPWG4

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PMIC - Supervisors

The Texas Instruments TLC7725IPWG4 is an integrated, low-power + 2.7V to + 5.5V supervisor with internally stored and fixed thresholds. This device includes voltage detection, two active-low reset outputs, an active-low push button reset event flag, a watchdog timer reset, a manual reset event flag, a power-on reset flag, an exact power-failed reset, and an adjustable power-supply monitor. It efficiently improves system reliability and is designed for a variety of applications, such as automotive, industrial, and consumer.

Application Field

The TLC7725IPWG4 is commonly used to regulate the supply voltages in a wide range of applications, such as automotive and industrial. It is also suitable for personal computer applications like motherboards, embedded systems, and portable electronic devices that require a sense and reset function. The device is reliable and offers precise reset thresholds under all operating conditions.

Additionally, the TLC7725IPWG4 supports multiple reset sources, such as manual reset and power-on reset, to ensure proper operation with different methods of system resets and power-up/down reset conditions. It also provides precise and reliable reset synchronization for different busses, such as I2C, SPI, CAN, CAN bus, and UART.

The device monitors the power up of systems, and the power-fail indication will confirm the safe operation of systems. It offers precise reset timing that helps prevent system glitches, false resetting, and any other problems that arise from improper system operation. It also helps insure that the system is properly warmed up before system start up, and provides protection against power-sequence and power-transient events.

Working Principle

The TLC7725IPWG4 is an active-low reset supervisor with two independent reset outputs. This device has a built-in voltage detector, a watchdog timer, a manual reset event flag, a power-on reset flag, an exact power-failed reset, and an adjustable power-supply monitor. Its voltage detector has two distinct threshold ranges of 2.7V to 5.5V, with one reset output for each range. The second reset output is active-low and works consistently with both threshold ranges.

The watchdog timer can be used to detect system faults, and it automatically restarts the system after it detects a fault. It is powered down by an external transistor, preventing any external-reset events from interfering with the watchdog timer function. The manual reset event flag is an active-low output, and it is asserted when a manual reset event is detected. The power-on reset flag is an active-low output, and it is asserted when the power supply is below the predetermined voltage threshold. The exact power-failed reset is asserted when the exact power is fired. Finally, the adjustable power-supply monitor is powered up when the device is switched on, and it monitors the external power supply.

The TLC7725IPWG4 is a reliable and efficient device that is suitable for a wide range of applications. It integrates precise reset thresholds and a wide range of features that make it ideal for automotive and industrial applications, as well as personal computers, embedded systems, and portable electronic devices. With its multiple reset sources, precise reset timing, and precise reset synchronization, the TLC7725IPWG4 efficiently improves system reliability.

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