LP2975AIMM-5.0

Overview

The LP2975AIMM-5.0 is a MOSFET LDO Driver/Controller manufactured by Texas Instruments, housed in an 8-lead VSSOP surface-mount package. It provides a precision output voltage of 5.0V with a maximum tolerance of ±1.5% at 25°C. The device operates within an input supply voltage range of 1.8V to 24V and supports a junction temperature range from -40°C to +125°C. Typical quiescent current is 180 µA at VIN = 5V, while shutdown current is less than 1 µA.

Feature Summary

• Delivers high open-loop gain for excellent regulation and ripple rejection performance
• Features low-power shutdown capability with minimal standby current consumption
• Includes built-in overtemperature protection and current limit amplifier
• Enables user-selectable dropout voltage through external P-FET sizing

Applications

• High-current 5V to 3.3V regulator designs
• Post-regulator stages for switching converters
• Current-limited power distribution systems

Procurement Notes

Verify the specific 'A' grade suffix ensures the required 1.5% output voltage accuracy specification. Confirm the VSSOP-8 package designation matches the target PCB footprint. Ensure the component revision aligns with the SNVS006F datasheet documentation for accurate electrical parameter validation.

Selection Notes

Select this controller when designing custom linear regulators requiring precise voltage control with external pass transistors. Evaluate the gate drive current capabilities against the selected P-FET capacitance requirements. Consider thermal management strategies for the external FET based on the calculated power dissipation limits.

Part Context

This component belongs to the LP2975 family of MOSFET LDO controllers designed to simplify high-current linear regulator construction. It replaces traditional integrated LDOs by allowing designers to choose external pass elements tailored to specific current and thermal needs. The 'A' grade variant specifically targets applications demanding tighter voltage tolerances compared to standard industrial grades.

Replacement Considerations

LP2975IMM-5.0/NOPB