TPS3851H50EQDRBRQ1 Integrated Circuits (ICs)

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The TPS3851H50EQDRBRQ1 is a five-volt Voltage Supervisory Device suitable for use in automotive and other high-reliability applications. This Voltage Supervisor is designed to monitor power supply voltages and control host reset logic in response to under-voltage or over-voltage conditions. An externally-trimmed delay-on-ramp feature allows the user to configure the device to delay the reset assertion until an acceptable power-up ramp slope is achieved.

This IC belongs to a series of highly advanced Power Management Integrated Circuit (PMIC) products from Texas Instruments. It provides robust monitoring, reset and status reporting functions, designed to protect against various power-related problems.

The Voltage Supervisor features a single-output reset signal with a peak current of 1.65mA. It supports a wide input voltage range from 2v up to 5.6v. The rising and falling edge thresholds are also adjustable, which allows for higher precision when setting thresholds and detecting under-voltage or over-voltage conditions. The device also features an open-drain output enabling the user to connect multiple Voltage Supervisors in parallel or cascade configuration.

The TPS3851H50EQDRBRQ1 is configured via several pins, among which are the enable and reset Delay pins. The enable pin is used to put the chip in low-power sleep mode and the reset pin is used to assert a reset signal. By enabling or disabling the reset pin, the user can control the reset delay and set the Voltage Supervisory threshold value. The rising and falling edge thresholds are adjustable via external components.

The reset signal provided by the TPS3851H50EQDRBRQ1 is asserted for a period of 1.8s (or more depending on external components) after an under-voltage or over-voltage condition is detected. The signal remains asserted until the Vin pin returns to an acceptable voltage level. The reset signal can be connected to various reset controllers or other peripherals, allowing the user to take appropriate action when conditions are met.

In summary, the TPS3851H50EQDRBRQ1 is a highly reliable and robust Voltage Supervisor belonging to the Power Management IC (PMIC) series from Texas Instruments. Its features include a wide input voltage range, adjustable rising and falling edge threshold, low-power sleep mode, 1.65mA peak reset current, and 1.8s reset assert period. This Voltage Supervisor is suitable for use in automotive and other high-reliability applications, providing protection against power-related problems.

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