Texas Instruments LP2986ILD-5.0/NOPB

Overview

LP2986ILD-5.0/NOPB from Texas Instruments is a micropower, ultra-low-dropout linear voltage regulator delivering a precise 5.0 V fixed output at up to 200 mA, with 0.5% initial accuracy (A-grade), 180 mV typical dropout at full load, and <1 µA quiescent current in shutdown - designed for battery-powered portable electronics requiring stable low-noise supply rails.

For engineers reviewing the LP2986ILD-5.0/NOPB datasheet, LP2986ILD-5.0/NOPB pinout, LP2986ILD-5.0/NOPB application, or LP2986ILD-5.0/NOPB equivalent, key selection considerations include its 5-V fixed output accuracy, thermal/overcurrent protection, open-collector ERROR flag behavior, and compatibility with ceramic output capacitors ≥4.7 µF.

Technical Context

The LP2986ILD-5.0/NOPB uses a vertically integrated PNP (VIP) bipolar process to achieve ultra-low dropout and high precision. Its internal 1.23-V reference feeds an error amplifier that drives the pass element, with remote sensing via SENSE and feedback control via FEEDBACK/TAP pins configured for fixed 5-V operation.

It integrates active protection including thermal shutdown, current limiting (400 mA peak), and an open-collector ERROR comparator that asserts low when VOUT falls >5% below nominal. Shutdown is logic-compatible (active-high SHUTDOWN pin), enabling system-level power sequencing.

Key Specifications

Pinout & Package

LP2986ILD-5.0/NOPB is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm, featuring exposed thermal pad on bottom for enhanced heat dissipation. The package supports surface-mount assembly and requires PCB thermal vias under the pad for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LP2986ILD-5.0/NOPB, TPS76350DBVR offers lower shutdown current but omits the ERROR flag and SENSE functionality essential for robust portable power monitoring, while TLV70033DDCR provides similar dropout and current but is incompatible due to fixed 3.3-V output and missing supervision features.

Availability

LP2986ILD-5.0/NOPB is available at Aetrix Electronics and suitable for cellular phones, palmtop computers, camcorders, and precision portable instruments requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LP2986ILD-5.0/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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability linear regulators and power solutions.

The LP2986 series belongs to TI's precision micropower LDO family, engineered specifically for battery-powered portable electronics demanding ultra-low dropout, high accuracy, and integrated supervision in compact packages.

FAQ

What is the output voltage tolerance of the LP2986ILD-5.0/NOPB over temperature?

The LP2986ILD-5.0/NOPB guarantees ±1% output voltage tolerance over the full −40°C to +125°C junction temperature range. At 25°C, it achieves tighter 0.5% initial accuracy (A-grade), making it suitable for applications requiring stable 5-V supply across wide environmental conditions. This specification is confirmed in Section 6.5 of the SNVS137I datasheet.

Does the LP2986ILD-5.0/NOPB require an external capacitor on the ERROR pin?

No, the LP2986ILD-5.0/NOPB does not require an external capacitor on the ERROR pin. The ERROR pin is an open-collector output that sinks up to 300 µA when asserted low; it requires only an external pull-up resistor to VOUT or another supply (≤16 V). Adding capacitance would slow fault response and is not recommended per TI's application guidance in Section 7.3.2.

Can the LP2986ILD-5.0/NOPB be used with a 4.7-µF ceramic output capacitor?

Yes, the LP2986ILD-5.0/NOPB is explicitly characterized and stable with a minimum 4.7-µF ceramic output capacitor, as stated in Section 8.1 and Figure 31 of the datasheet. Unlike many older LDOs, it does not require high-ESR tantalum capacitors, enabling smaller, lower-cost, and more reliable ceramic-based designs.

What is the maximum input voltage the LP2986ILD-5.0/NOPB can withstand?

The LP2986ILD-5.0/NOPB supports a maximum input supply voltage of 16 V, both for continuous operation and survival rating (Section 6.1 Absolute Maximum Ratings). This allows direct use with 12-V battery systems or unregulated wall adapters, provided dropout margin (VIN – 5 V) exceeds 180 mV at the intended load current.

How does the SHUTDOWN pin of the LP2986ILD-5.0/NOPB behave during power-up?

The SHUTDOWN pin of the LP2986ILD-5.0/NOPB is active-high and requires a clean logic transition: it must exceed VH (1.4 V min) to enable output and fall below VL (0.55 V max) to disable. During power-up, TI recommends tying SHUTDOWN to VIN through a resistor or using a dedicated enable sequencer to avoid indeterminate states caused by slow-rising signals between VH and VL thresholds.