LP8720TLE-B/NOPB Integrated Circuits (ICs)

Voltage/Current - Output 3:	1.2 V ~ 3.3 V, 300mA
Base Part Number:	LP8720
Supplier Device Package:	20-uSMD
Package / Case:	20-WFBGA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2.7 V ~ 4.5 V
w/Sequencer:	Yes
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	1.2 V ~ 3.3 V, 300mA
Voltage/Current - Output 1:	0.8 V ~ 2.3 V, 400mA
Frequency - Switching:	2MHz
Number of Outputs:	6
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (1), Linear (LDO) (5)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LP8720TLE-B/NOPB\'s Application Field and Working Principle

LP8720TLE-B/NOPB is a member of Texas Instruments\' LP8720TLE family of low dropout linear and switching regulators. This low-dropout regulator family, widely used in Power Management IC (PMIC) applications, provides superior energy efficiency, lowest output noise, and exceptional current stability.The LP8720TLE-B/NOPB offers excellent voltage accuracy and switching performance with dual-mode operation and power-saving features. It helps reduce system cost, increase reliability, and improve battery life and user experience. The device also offers advanced protection capabilities, including over-temperature protection and over-current protection.In PMIC applications, the LP8720TLE-B/NOPB is used to regulate the power supply for specific subsystems or components in an electronic device. This allows for more efficient operation and a longer battery life for devices powered by NiMH, Ni-Cd, or Li-ion batteries. It is suitable for use in low power applications up to 1.2A.The LP8720TLE-B/NOPB offers a comprehensive range of features, such as:

• High accuracy of output voltage with integrated over-temperature protection
• High power efficiency up to 97%
• Low output noise and exceptional current stability
• Low quiescent current, power saving mode and logic level enable control.
• Reduces system cost, increases reliability, and improves battery life and user experience/li>

The LP8720TLE-B/NOPB has several features that make it suitable for use in a wide range of applications, including mobile phones and portable electronics, automotive systems, and industrial applications.

LP8720TLE-B/NOPB’s Working Principle

At its core, the LP8720TLE-B/NOPB uses a ‘sub-harmonic switching\' method of operation. This means the core consists of two transistors, one for each supply voltage, that are controlled by a voltage error amplifier. At a certain reference voltage, the error amplifier will switch the voltage of one transistor from a high level to a low level and vice versa, thus creating an oscillating sub-harmonic waveform. The waveform can be manipulated to provide the desired output voltage, and the oscillating transistors will quickly switch back and forth, providing the necessary energy to maintain the output voltage.The LP8720TLE-B/NOPB also uses a control circuit to actively monitor the input and output voltages and adjust its output voltage accordingly to keep them within the desired range. This helps to ensure the LP8720TLE-B/NOPB can maintain its output voltage even in changing conditions.The LP8720TLE-B/NOPB also features over-temperature and current protection, which makesthe LP8720TLE-B/NOPBsuitable for a wide range of applications. The device is rated for operation up to 1.2 A of output current, so it can handle the majority of low-power applications easily.

Conclusion

The LP8720TLE-B/NOPB is an excellent choice for a PMIC voltage regulator due to its high power efficiency, low output noise, and exceptional current stability. The device\'s advanced protection features and dual-mode operation give it the ability to be used in a variety of applications. It is also relatively low cost and easy to use, making it an excellent choice for any power management system.

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