TPS3707-50DGNRG4

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active High/Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	4.55V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Supplier Device Package:	8-MSOP-PowerPad
Base Part Number:	TPS3707-50

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TPS3707-50DGNRG4 Application Field and Working Principle

Introduction to PMIC- Supervisors

Power Management Integrated Circuits (PMICs) are widely used in electronics to enable the safe and reliable operation of electrical and electronic systems. PMICs help achieve optimal power levels, which conserve energy while providing a stable and reliable output. Supervisors are an important type of PMICs. A supervisor is a special PMIC that safeguards a device\'s operation by monitoring the system\'s power supply and generating corresponding reset signals when it detects a fault. This reset signal, when active, will trigger the system to enter reset mode, preventing it from operating in an unpredictable or dangerous way.

Applications of the TPS3707-50DGNRG4

The TPS3707-50DGNRG4, manufactured by Texas Instruments, is a supervisor chip designed for use in mobile, portable and precision devices. It offers various supply voltage supervision and reset functions in a small, low-power package and has been specifically designed for highly integrated, low-power solution for portable, battery-powered and medical devices.The TPS3707-50DGNRG4 provides protection against power supply and battery fault conditions by detecting reset conditions and providing a reset output. It is designed to keep one of the two primary supply rails − the battery or main supply − stable while reducing the power consumption in the system, ultimately extending the battery life. It provides overvoltage and undervoltage monitoring of a 4.5 to 12.6 V battery or main supply, and can monitor voltages as low as 1.1 V (with external resistor). It also provides an output for system reset in the event of undervoltage or overvoltage conditions, or both. It also features a power-good flag that can be used to indicate to the system when the power supply or battery input is within its safe operating limits.The TPS3707-50DGNRG4 features integrated 500 mA output current capability and can be used to actively reset the system when required. It is designed to reset the system when an undervoltage or overvoltage condition is detected, and it can also reset the system when the system is turning on or off. It has a low-power operation mode with a low supply current (less than 5 μA) and a wide range of operating temperature (−40 °C to +125 °C), making it ideal for battery-powered and medical applications.

Working Principle of the TPS3707-50DGNRG4

The TPS3707-50DGNRG4 monitors the power supply or the battery input for an overvoltage, undervoltage, or both, condition. It has three pins for these functions - VBAT_OV, VBAT_UV, and VMAIN_UV.When an undervoltage or overvoltage condition is detected, the TPS3707-50DGNRG4 triggers the Reset signal. This signal alerts the system to shut down so as to protect it from potential harm caused by the fault condition.The TPS3707-50DGNRG4 has two preset reset threshold values, one for the battery voltage (Vbat_UV) and one for the main supply voltage (Vmain_UV). These two threshold values are determined by two external resistors. The value of these resistors can be adjusted to change the corresponding threshold values.The TPS3707-50DGNRG4 also features a power-good flag that indicates whether the power supply or battery input is within its safe operating limits. The flag is used to determine if the system is powering up or down, and is used to indicate whether the power supply or battery input is within its specified limits of operation. This feature ensures that the system does not attempt to power up or down when the input power is outside of its safe operating limits.

Conclusion

The TPS3707-50DGNRG4 is a supervisor chip designed by Texas Instruments for mobile, portable and precision devices. It monitors and safeguards the system\'s power supply and battery voltage and provides the Reset signal to protect the system when a fault is detected. It has a low-power operation mode and wide operating temperature range, making it ideal for battery-powered and medical applications.

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