Texas Instruments LP2985AIM5-5.0/NOPB

Mfr. Part

LP2985AIM5-5.0/NOPB

Manufacturer

Texas Instruments (Luminary Micro/Texas Instruments)

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Detailed Description

Compact, fixed 5 V low-dropout (LDO) linear regulator, 150 mA output, SOT-23-5 package. Wide input range up to 16 V, low dropout (max 0.58 V at 150 mA), low quiescent current, enable control, and a bypass pin for reduced output noise. Solid PSRR (45 dB at 1 kHz) and robust protection (over-current, over-temperature, short-circuit). RoHS3 compliant. Ideal for space-constrained designs needing a clean 5 V rail.

Key Features

Fixed 5 V positive output

Output current up to 150 mA

Input voltage up to 16 V

Low dropout: 0.58 V max at 150 mA

PSRR: 45 dB at 1 kHz

Low quiescent current (typ ~95 µA)

Supply current max 2.5 mA

Enable pin for on/off control

Bypass pin for low-noise performance

Protections: over-current, thermal shutdown, short-circuit

Operating temperature: -40°C to +125°C

Single regulator channel

Surface-mount SOT-23-5 (also known as SC-74A, SOT-753)

RoHS3 compliant

Base product family: LP2985

Key Advantages

Stable, clean 5 V rail with simple design

Low dropout reduces heat and extends battery life

Low noise (bypass pin) suitable for RF, audio, and precision sensors

Small footprint saves PCB space and supports dense layouts

Robust protections increase reliability in harsh conditions

Wide temperature range supports industrial environments

Easy integration with enable control for power sequencing

Packaging

Shipment type: Tape & Reel (TR) for automated assembly

Package/case: SOT-23-5 (SC-74A, SOT-753)

Package material: Molded epoxy plastic body with matte-tin, Pb-free leads (/NOPB)

Typical size (SOT-23-5): approx. 2.9 mm x 1.6 mm body, ~1.1 mm height (reference; verify exact dims in datasheet)

Mounting: Surface mount

Pin configuration (typical SOT-23-5 for LP2985): IN, OUT, GND, EN, BYPASS (pin numbering depends on orientation; confirm in datasheet)

Thermal characteristics: Thermal shutdown integrated; typical junction-to-ambient thermal resistance depends on PCB (use datasheet/layout guide; good layout significantly lowers θJA)

Electrical properties summary:

- Output: 5 V fixed, positive

- Output current: 150 mA

- Dropout voltage: 0.58 V max at 150 mA

- PSRR: 45 dB at 1 kHz

- Quiescent current: ~95 µA typical

- Supply current: up to 2.5 mA

- Input voltage: up to 16 V

- Control: Enable pin

- Protections: over-current, over-temperature, short-circuit

Lifecycle

Status: Active and widely used. Not approaching discontinuation based on current TI portfolio. For the latest status, check our website or contact Y-IC sales.

Equivalent and alternative models (verify pinout and electrical limits before substitution):

- Texas Instruments LP2985 family (same series, different fixed voltages): LP2985AIM5-1.8/NOPB, LP2985AIM5-2.5/NOPB, LP2985AIM5-3.0/NOPB, LP2985AIM5-3.3/NOPB (same package; voltage options for the same design)

- Texas Instruments TPS709-5.0DBVT (150 mA, up to 30 V input, SOT-23-5; similar role, check pinout and startup behavior)

- Texas Instruments TPS7A49-5.0 (150 mA, high-voltage LDO; package options vary, check footprint)

- Microchip MIC5219-5.0YM5 (up to 12 V input, SOT-23-5; higher current capability, lower max VIN vs. LP2985)

- Microchip MCP1790-5002 (70 mA, up to 30 V input, SOT-23-5; lower current, higher VIN)

- Analog Devices ADP160AUJZ-5.0-R2 (150 mA, up to 5.5 V input, SOT-23-5; suitable if VIN ≤ 5.5 V)

- Maxim Integrated MAX8887EUA+T (150 mA, up to ~6.5 V input, SOT-23-5; suitable if VIN ≤ 6.5 V)

If you need a drop-in, pin-compatible replacement or specific electrical match, contact our sales team via the Y-IC website for tailored cross-reference support.

Key Application Areas

Post-regulation after DC/DC converters to reduce ripple and noise

5 V rails for microcontrollers, logic, sensors, and communication modules

RF and audio circuits needing low-noise supplies (use bypass pin)

Portable and battery-powered devices

Industrial control modules and instrumentation with higher input voltages

IoT endpoints, gateways, and sensor nodes

General-purpose 5 V regulation in space-constrained designs

Datasheet

Y-IC provides the most authoritative datasheet for LP2985AIM5-5.0/NOPB on our product page. Download the datasheet here to get exact pinouts, curves, layout guidance, and the latest specifications.

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