Texas Instruments LP2986AILD-3.3/NOPB

Overview

LP2986AILD-3.3/NOPB from Texas Instruments is a micropower, ultra-low-dropout linear voltage regulator delivering a precision 3.3 V output at up to 200 mA. It features 0.5% output voltage accuracy (A grade), 180 mV typical dropout at full load, <1 μA quiescent current in shutdown, and integrated error flag for power-good monitoring. It is used in battery-powered portable electronics requiring stable low-noise 3.3 V supply rails.

For engineers reviewing the LP2986AILD-3.3/NOPB datasheet, LP2986AILD-3.3/NOPB pinout, LP2986AILD-3.3/NOPB application, or LP2986AILD-3.3/NOPB equivalent, key selection considerations include dropout performance at 200 mA, ground pin current vs. load, thermal resistance of the VSSOP-8 package, and ERROR flag threshold hysteresis for system supervision.

Technical Context

The LP2986AILD-3.3/NOPB uses a vertically integrated PNP (VIP) bipolar process to achieve ultra-low dropout and high PSRR (65 dB at 1 kHz). Its internal 1.23 V reference enables precise fixed 3.3 V output via pin-strapped configuration (SENSE→OUT, FEEDBACK→TAP), eliminating external resistors.

It integrates active protection including thermal shutdown, current limiting (400 mA peak), and an open-collector ERROR flag that asserts low when output drops >5% below nominal. Shutdown is active-high with logic-compatible thresholds (VH = 1.4 V, VL = 0.55 V) and requires ≥40 mV/μs slew rate for reliable transition.

Key Specifications

Pinout & Package

The LP2986AILD-3.3/NOPB is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm and exposed thermal pad (DAP) on bottom for enhanced heat dissipation. R_θJA = 156.5°C/W (high-K board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TLS850F2EJXUMA1 and MCP1826-3302E/DB, the LP2986AILD-3.3/NOPB uniquely balances ultra-low shutdown current (<1 μA), precision 3.3 V output (0.5%), and integrated ERROR flag in a compact VSSOP-8 package-making it optimal for portable industrial and medical devices where battery longevity and power supervision are critical.

Availability

LP2986AILD-3.3/NOPB is available at Aetrix Electronics and suitable for cellular handsets, industrial sensor nodes, medical wearables, and automotive infotainment systems requiring stable component supply with guaranteed long-term availability.

Supply support for LP2986AILD-3.3/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and personal electronics markets.

The LP2986AILD-3.3/NOPB belongs to TI's precision micropower LDO family, engineered specifically for battery-powered portable equipment demanding ultra-low dropout, high accuracy, and integrated power supervision in minimal footprint packages.

FAQ

What is the dropout voltage specification for LP2986AILD-3.3/NOPB at 200 mA load?

The LP2986AILD-3.3/NOPB has a typical dropout voltage of 180 mV at 200 mA load and 25°C, with a maximum of 230 mV over the full −40°C to +125°C junction temperature range. This value is measured as the input-to-output differential at which the output drops 100 mV below its nominal value. The low dropout enables reliable operation from inputs as low as 3.48 V while maintaining 3.3 V output.

Does LP2986AILD-3.3/NOPB require external resistors to set its 3.3 V output?

No, the LP2986AILD-3.3/NOPB delivers a factory-trimmed 3.3 V output without external resistors. It achieves this by internally connecting the SENSE pin to OUT and the FEEDBACK pin to TAP - a pin-strapped configuration enabled by its internal precision voltage divider. External resistors are only needed if adjusting output voltage beyond 3.3 V.

How does the ERROR pin on LP2986AILD-3.3/NOPB function, and what external components are required?

The ERROR pin on LP2986AILD-3.3/NOPB is an active-low, open-collector output that goes low when V_OUT drops >5% below nominal (e.g., <3.135 V for 3.3 V output). An external pull-up resistor to V_OUT or another supply (≤16 V) is mandatory. The pin can sink up to 300 µA. If unused, it may be left floating per datasheet guidance.

What thermal considerations apply to LP2986AILD-3.3/NOPB in VSSOP-8 (DGK) package?

The LP2986AILD-3.3/NOPB in VSSOP-8 has R_θJA = 156.5°C/W (high-K board) and R_θJB = 76.5°C/W. To avoid thermal shutdown at 200 mA, ensure adequate copper area under the exposed thermal pad (DAP) with ≥4 thermal vias to inner ground layers. Junction temperature must remain ≤125°C; power dissipation should be limited to ~350 mW under worst-case ambient conditions.

Can LP2986AILD-3.3/NOPB be used with ceramic output capacitors, and what is the minimum value?

Yes, the LP2986AILD-3.3/NOPB is stable with ceramic output capacitors. The minimum required value is 4.7 µF, and larger values are permissible. Ceramic types with X7R, COG/NPO, or Y5P dielectrics are recommended; Z5U, Y5V, and Z4V are prohibited due to excessive capacitance shift over temperature. Input capacitor ≥2.2 µF is also required.