LP2985 Low-Noise Low-Dropout Regulator

Specifications

Product Overview

The LP2985 is a Texas Instruments Power_Management power IC identified as a low-noise low-dropout regulator. It is supplied in the DBV, 5-pin SOT-23 package with a 2.9 mm × 2.8 mm body, supporting compact regulated supply rails where output current requirements are up to 150 mA.

For the new chip, the recommended input range is 2.5 V to 16 V, with fixed output versions from 1.2 V to 5.0 V in 100 mV steps. Legacy-chip limits list 2.2 V to 16 V input operation and a 1.2 V to 10.0 V output-voltage operating range. New-chip output accuracy is specified at ±0.5% at 25°C and ±1% across load and -40°C to +125°C junction temperature.

The device includes enable and UVLO behavior, with new-chip enable thresholds of 0.72 V for output off and 0.85 V for output on. Capacitor requirements include a 1 µF minimum input capacitor and a new-chip output capacitance range of 1 µF to 200 µF with 0 Ω to 1 Ω ESR.

Key Features

• Low-noise LDO regulator for 0 mA to 150 mA loads
• New-chip input voltage range from 2.5 V to 16 V
• Fixed new-chip outputs from 1.2 V to 5.0 V
• 100 mV fixed-output step size on new-chip versions
• ±0.5% new-chip output accuracy at 25°C
• ±1% accuracy across load and junction temperature
• 30 µV RMS output noise with 10 nF bypass capacitor
• 70 dB PSRR at 1 kHz on new chip
• Enable input thresholds for output off and on control
• DBV 5-pin SOT-23 package, 2.9 mm × 2.8 mm

Typical Applications

• Low-noise regulated supply rails
• 150 mA point-of-load regulation
• Battery-powered regulated outputs
• Enable-controlled supply sequencing
• Compact SOT-23 power regulation
• Noise-sensitive analog supply rails
• Fixed-voltage embedded power rails

Procurement Notes

When requesting a quote for LP2985, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.

If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.

For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.