TL7757CPKG3

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Power management integrated circuits (PMICs) are widely used in modern electronic devices. PMICs are essential for maintaining the stability of power under certain conditions. Supervisors, as one of the categories of PMICs, play an important role in providing reliable power to the on-board devices. The TL7757CPKG3 is a monolithic supervisor IC designed to address a variety of power management and system monitoring needs in monolithic power-supply systems.

The TL7757CPKG3 is a microprocessor supervisor with integrated voltage monitoring, battery controller monitoring, and power-fail-detection circuits. The unit provides an active-low reset output and a window watchdog timer output as well as signaling of a power supply undervoltage (UV) fault. The active-low reset is asserted at power-up and is also asserted a fixed number of times (configured by the on-chip configuration software) when a fault is detected. The UV fault is communicated on GPO sign-off pins.

The UV monitor uses on-chip comparators to provide a reset when low-level UV voltages occur. The monitor compares the VDD supply voltage with a fixed threshold voltage. The factory-configured window watchdog timer monitors the processor to confirm proper operation. The reset output remains asserted until the timer counts to the timeout value selected from the available window values.

TL7757CPKG3 also has several features designed to minimize power consumption. These features include an on-chip 10-bit DAC (digital-to-analog converter) to program the factory-set threshold voltage. Budget constraint designs can achieve high accuracy undervoltage detection without developing and calibrating high-cost external components. The device also offers programmable timer operating options to maximize power efficiency, optimize noise rejection and reduce power consumption.

The TL7757CPKG3 supervisor is widely used in Industrial and Medical fields. In industrial areas, the applications of TL7757CPKG3 includes systems such as energy management systems, display panels, HVAC/R (heating, ventilation, air conditioning and refrigeration), programmable logic controllers, handheld and portable equipment, DC brushless motor drives. In medical field, the TL7757CPKG3 can be used in medical display panels, medical imaging systems and medical electronic test equipment, such as endoscopy systems and X-ray machines.

In conclusion, the TL7757CPKG3 is a multifunction monolithic power-supply supervisor with features for power-fail detection, undervoltage detection and window watchdog timer functions. The device is well suited for applications requiring power monitoring in harsh industrial and medical environments. The TL7757CPKG3 provides excellent power savings and very accurate fault detection while minimizing system cost.

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