LP3986TLX-2929/NOPB

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Introduction

The LP3986TLX-2929/NOPB is a Linear Voltage Regulator from Texas Instrument\'s Power Management Integrated Circuit (PMIC) family. This device is a low dropout (LDO) Central Processing Unit (CPU) voltage regulator suitable for providing power to microprocessors.

Application Field

The LP3986TLX-2929/NOPB is typically used in electronic circuits that have to supply a steady and reliable voltage to the CPU to guarantee optimal performance and to prevent over-current events. It is capable of regulating a wide range of input and output voltages, and its low-noise operation makes it suitable to power sensitive components.

Features and Benefits

• Low quiescent current: 210 μA. This is extremely energy-efficient, making this chip suitable for battery-powered applications.
• Low dropout voltage: 160 mV at 250 mA. This allows the regulator to still deliver steady voltage even when the battery voltage drops.
• Over-current protection: The LDO includes current limiting, thermal shutdown, and short circuit protection.
• High accuracy: The device ensures a very low output voltage tolerance and ripple.

Working Principle

The LP3986TLX-2929/NOPB is an LDO regulator that works, in a very simplified manner, by maintaining a constant output voltage, regardless of the load. It works by connecting a transistor between the power source and the output. This transistor draws current from an external resistor and an impedance device (usually an operational amplifier) to control the base current which in turn controls the output voltage. This way, the regulator can ensure a steady voltage at the output.

Conclusion

The LP3986TLX-2929/NOPB is a Linear Voltage Regulator from Texas Instruments\' PMIC family, suitable for providing a steady voltage to microprocessors. Thanks to its low quiescent current, low dropout voltage, and its protection features, this regulator is a highly efficient and accurate solution for applications such as battery-powered circuits and systems that need to protect sensitive components.

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