LP2985AIM5-2.7

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

The LP2985AIM5-2.7 is a micropower, low-noise, ultra-low-dropout linear regulator manufactured by Texas Instruments. It delivers up to 150 mA of output current with an input voltage range of 2.5 V to 16 V. The device features a fixed 2.7 V output with 1% accuracy (A Grade) and operates within a junction temperature range of -40°C to 125°C. It utilizes a vertically integrated PNP process for low quiescent current and includes overcurrent and overtemperature protection.

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

• Ultra-low dropout voltage performance designed for battery-powered applications
• Low noise operation with a dedicated bypass pin for enhanced signal integrity
• Integrated overcurrent and overtemperature protection circuitry
• Stable with ceramic output capacitors having very low equivalent series resistance

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

• Cellular phones
• Palmtop and laptop computers
• Personal digital assistants (PDA)
• Camcorders and personal stereos

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

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance status. Confirm the 'A' grade designation ensures the tighter 1% output voltage tolerance compared to standard grades. Ensure the SOT-23 package variant matches the required PCB footprint dimensions.

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

Select this component when a fixed 2.7 V rail is required from a supply between 2.5 V and 16 V. The A-grade version is necessary for designs demanding strict 1% output voltage accuracy. Consider the SOT-23 package size constraints and thermal dissipation capabilities for the expected load current.

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

This part belongs to the LP2985-N family of micropower LDO regulators. The family is characterized by its ability to drive high loads with minimal voltage drop and low power consumption. It is optimized for portable electronics where battery life and space are critical design factors.

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

Direct replacements include other LP2985 variants with different fixed output voltages or non-A grades if tolerance requirements allow. Verify that any substitute maintains the same SOT-23-5 pinout and electrical characteristics.

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

What is the minimum input voltage required for proper regulation?

The minimum operating input voltage is determined by the output voltage plus the maximum dropout voltage at the specific load current.

How does the ON/OFF pin function affect power consumption?

Pulling the ON/OFF pin low disables the regulator, reducing the quiescent current to less than 2 µA for extended battery life in sleep modes.