LP3985IM5X-2.8/NOPB

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

The LP3985IM5X-2.8/NOPB is a fixed-output low-dropout voltage regulator manufactured by Texas Instruments, providing a stable 2.8 V output with a maximum load current of 150 mA. Housed in a compact SOT-23-5 surface-mount package, this device operates within an extended temperature range from -40°C to +125°C. It features a typical quiescent current of 250 µA and maintains a maximum dropout voltage of 60 mV under full load conditions. The regulator includes integrated protection mechanisms against overcurrent, thermal overload, and short circuits, ensuring reliable performance in space-constrained portable applications.

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

• Ultra-low dropout voltage capability ensures efficient power regulation even when input voltage approaches the output level.
• Integrated comprehensive protection circuitry safeguards against overcurrent events, thermal stress, and output short circuits.
• Fixed positive output configuration delivers precise voltage regulation without requiring external feedback components.

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

• Portable battery-powered electronic devices requiring efficient linear regulation
• Cellular phones and mobile communication equipment
• Personal digital assistants and handheld computing devices

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

Verify the complete part number including the suffix /NOPB to confirm lead-free compliance and specific manufacturing lot details. Confirm the SOT-23-5 package type matches your PCB footprint requirements. Ensure the fixed 2.8 V output aligns with your system voltage rails. Check for any recent product change notices regarding assembly sites or material declarations before finalizing procurement orders.

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

Select this component when a fixed 2.8 V rail is required with moderate current demands up to 150 mA. The SOT-23-5 package offers a small footprint suitable for dense board layouts. Consider the 250 µA quiescent current impact on overall battery life in standby modes. Verify that the input voltage remains within the specified operational limits relative to the 2.8 V output to maintain regulation.

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

This device belongs to the LP3985 series of micropower low-noise ultra low-dropout CMOS voltage regulators. The series provides various fixed output voltages to support different logic families and sensor requirements. The IM5X designation indicates the specific temperature grade and SOT-23-5 packaging variant used for surface mount assembly.

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

What is the maximum input voltage allowed for this regulator?

The maximum input voltage is 6 V. Exceeding this limit may damage the device.

Does this regulator include an enable pin?

Yes, the LP3985 series typically includes an enable control feature to manage power consumption.