TL7705AIPG4

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Complementary
Reset:	Active High/Active Low
Reset Timeout:	1 µs Maximum Propagation Delay
Voltage - Threshold:	4.55V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-PDIP
Base Part Number:	TL7705A

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TL7705AIPG4 is a low power, low voltage standby supervisor device in the Power Management IC (PMIC) Supervisors product category, which are devices for monitoring and controlling the power supply input of systems that have low current requirements. It is designed to extend system efficiency, reduce system power, and provide a reliable and easy to maintain system. This device provides a wide range of protection features, as well as a configurable reset delay and polarity.

Application FieldTL7705AIPG4 can be used in low-power systems that require a low voltage supervisor IC to provide dependable power system monitoring, power sequencing, and reset signaling. Such systems are typically portable battery-powered devices like handhelds, tablet PCs, mobile phones, digital cameras, IoT and wearable applications. The device is suitable for use in many power system applications, including battery-powered systems, microcontrollers based systems, IT system monitoring and power sequencing systems, embedded systems, and green energy products.

Working PrincipleThe TL7705AIPG4 has a dedicated reset output and an optional power-on reset (POR) output. Both outputs provide an active-low signal when the reset function is active. The reset output acts when the VDD voltage falls below 1.6V and then stays low until the voltage returns to the programmed voltage level. The POR output is active for a user-programmable time defined by the RPO register after power-on or any power cycle event. It is also easier to read the status of the device with a basic pin voltage level in both active-low and active-high output modes.

TL7705AIPG4 can operate in both reset synchronous and asynchronous modes. In reset synchronous mode, the reset signal is synchronous with the VDD, and in reset asynchronous mode, the reset signal is asynchronous with the VDD. This enables the reset signal to become active before or after the VDD voltage rises to its programmed voltage level. In addition, the TL7705AIPG4 also has a manual reset input (MR) pin, which is used to either trigger the reset signal when pulled low, or to disable the reset signal when pulled high.

The device can be programmed with different VDD detection limits, reset output delay times, and reset output polarity. The reset output is available in both active-high and active-low polarity. The POR output is used for power sequencer applications and is configurable with different reset output delay times depending on the requirement of the system.

The TL7705AIPG4 also has many features to improve system reliability. These features include reset monitoring, manual reset, and watchdog functions. The reset monitoring function allows detections of reset events outside of the normal reset monitoring window, such as brownout events. The manual reset input can be used to manually trigger the reset signal. The watchdog feature monitors the system for activity and will issue a reset if the monitored activity falls below a minimum threshold for a maximum amount of time.

The device is equipped with a range of protection features, such as low voltage monitoring, over voltage monitoring, reverse link monitoring, thermal shut down, and CPU reset. The low voltage monitoring function will detect a drop in the power supply voltage and issue an active reset signal if the voltage drops below a predetermined threshold. The over voltage monitoring will detect if the power supply voltage is too high and issue a reset. The reverse link monitoring feature detects if the power supply voltage drops below a predetermined voltage and issue a reset if the voltage drops below a certain level. The thermal shutdown feature will monitor the device temperature and issue a reset signal if the temperature exceeds a predetermined threshold. And the CPU reset can be enabled or disabled based on the system requirements.

TL7705AIPG4 is a flexible and reliable low power, low voltage supervisor device that provides a number of features to improve system reliability. It is suitable for a wide variety of applications, including portable battery-powered devices, power sequencing systems, and embedded systems. It offers low power consumption, configurable reset delay, wide range of protection features, and manual reset. This makes it an ideal device for a range of low-power systems.

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