The LP2988AIMX-3.2 is a micropower, dual, low-dropout (LDO) regulator from Texas Instruments (formerly National Semiconductor). It is designed to provide two independent, regulated output voltages with very low dropout voltage and quiescent current, making it suitable for battery-powered devices and energy-sensitive applications. This LDO regulator also features an error flag and shutdown functionality.

Applications

• Battery-Powered Equipment: Powers various components in portable devices such as smartphones, tablets, and wireless sensors, maximizing battery runtime.
• Microprocessor/Microcontroller Systems: Provides a stable and clean voltage supply for microprocessors and microcontrollers in embedded systems and IoT devices.
• Wireless Communication Devices: Regulates voltage for RF transceivers and other wireless communication components, ensuring reliable operation and performance.
• Portable Instrumentation: Supplies power to analog and digital circuits in portable test and measurement equipment.
• Post Regulation for Switching Regulators: Provides improved noise and ripple performance in systems using switching power supplies.

Features

• Dual Output: Provides two independent regulated output voltages, reducing component count and board space.
• Low Dropout Voltage: Maintains regulation with a very small difference between input and output voltages, maximizing efficiency.
• Low Quiescent Current: Consumes minimal current when supplying power, extending battery life in portable devices.
• Error Flag: Provides an error signal when an output voltage falls out of regulation, enabling fault detection.
• Shutdown Control: Allows the regulator to be turned off, reducing power consumption during inactive periods.

Benefits

• Extended Battery Life: Maximizes battery runtime in portable devices through its low quiescent current and low dropout voltage.
• Improved System Reliability: Provides stable and clean voltage regulation, improving the performance and reliability of connected components.
• Reduced Component Count: Simplifies system design and reduces board space requirements with its dual-output configuration.
• Fault Detection: Enables early detection of output voltage faults through the error flag function.
• Power Savings: Reduces power consumption during inactive periods with the shutdown control feature.

Additional Details

The LP2988AIMX-3.2 comes in a specific package. The fixed output voltage is 3.2V. It also features current limiting and thermal shutdown protection. The Enable pins on each regulator allow for each to be independently controlled.