LP5951MF-3.3

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LP5951MF-3.3 is a fixed-output low-dropout (LDO) voltage regulator manufactured by Texas Instruments, designed for micro-power applications. It provides a stable 3.3 V output with a maximum load current of 150 mA. The device features a typical quiescent current of 55 µA and a maximum supply current of 70 µA. It operates within an input voltage range up to 5.5 V and maintains regulation with a dropout voltage of approximately 200 mV at full load. The component supports surface-mount installation in a compact SOT-23-5 package and functions reliably across an extended temperature range from -40 °C to +125 °C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated enable control functionality for power management
• Built-in protection against overcurrent, thermal overload, and short circuits
• High power supply rejection ratio for noise-sensitive circuits
• Fixed positive output configuration for simplified design

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronic devices requiring low standby current
• Embedded systems utilizing microcontrollers or sensors needing stable 3.3 V rails
• Wireless communication modules operating under strict power constraints

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix and manufacturer documentation before procurement, as availability may vary. Confirm that the component meets all required electrical specifications for your application, including input voltage ranges and thermal performance. Check for any recent product change notices regarding pin configurations or packaging updates. Ensure compatibility with your PCB footprint and soldering processes. Review official datasheets for detailed handling and storage instructions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator when a fixed 3.3 V output is required with minimal quiescent current consumption. It is suitable for designs where space is limited due to its small SOT-23-5 package. Consider the dropout voltage characteristics relative to your minimum input voltage to ensure proper regulation under all load conditions. Evaluate the thermal dissipation requirements based on the expected load current and ambient temperature.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the LP5951 series of low-dropout regulators from Texas Instruments. The series offers various fixed output voltages and shares common architectural features such as low quiescent current and integrated protection mechanisms. It is part of Texas Instruments' portfolio aimed at providing efficient power solutions for battery-operated and space-constrained applications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin-to-pin compatibility and electrical parameter equivalence before replacing.