LP38843SX-1.5

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PMIC - Voltage Regulators - Linear

The LP38843SX-1.5 is a specialized voltage regulator commonly used in applications that require a combination of low quiescent current, low output noise and low dropout voltage. It is part of a family of advanced linear regulators that are suitable for regulating small, single-cell power supplies as well as dual-supply or multi-supply systems. The LP38843SX-1.5 offers very low quiescent current in operating mode, as low as 6.7µA, making it an ideal choice for battery-powered systems. It also provides extremely low output noise, making it suitable for sensitive, low-noise applications. Additionally, it offers a very low dropout voltage, typically 0.06V over the full temperature range, and includes a unique low-noise adaptive control loop.

LP38843SX-1.5 Application Field

The LP38843SX-1.5 can be used in a variety of applications, such as power management systems, power converters, portable electronics, computing and storage systems, office equipment, and automotive systems. It can also be used in IoE (Internet-of-Things) and wearable applications, providing reliable and consistent power to connected components. Some common applications for the LP38843SX-1.5 include USB Type-C and PD controllers, OLED displays, fifth-generation (5G) cellular basebands, micro-controllers, radio frequency power amplifiers, power sources, and SoC On-Chip regulators.

LP38843SX-1.5 Working Principle

The LP38843SX-1.5 is a low quiescent linear voltage regulator. It is designed to provide stable and efficient regulation of input voltage and current. Its advanced features allow for a wide range of output voltages to be generated, from 0.5V to 5.5V. The device operates in the “low-dropout” range, typically 0.06V over the full temperature range, allowing for a smaller, higher-efficiency voltage regulator solution. Additionally, the LP38843SX-1.5 features a low-noise adaptive control loop, which enables the device to regulate voltage efficiently over a wide range of operating conditions.

The LP38843SX-1.5 operates by first receiving the input voltage and current. The device then uses its internal voltage reference and compares it to the desired output voltage. It then regulates the input current accordingly to ensure the output voltage is successfully regulated. The device controls the output voltage fluctuation by controlling the current levels and thus, reduces waste power. Additionally, the device has protection features that enable it to detect and protect against over-current, over-voltage, and reverse current.

Overall, the LP38843SX-1.5 is a robust and efficient linear optimal regulator for a variety of power management systems. It offers an excellent combination of low quiescent current, low output noise, and low voltage dropout, making it an ideal choice for battery-powered, low-noise, and high-efficiency systems.

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