STMicroelectronics Integrated Circuits (ICs)PMIC - Voltage Regulators - Linear STMicroelectronics PMIC - Voltage Regulators - Linear

LD2981CM33TR PMIC - Voltage Regulators - Linear by STMicroelectronics

LD2981CM33TR is a PMIC - Voltage Regulators - Linear model from STMicroelectronics, presented on TrustCompo for buyers who need clear sourcing and review context before RFQ. This listing sits in the Integrated Circuits (ICs) / PMIC - Voltage Regulators - Linear product path. Known package information currently points to SOT23 under the STMicroelectronics brand listing. IC REG LINEAR 3.3V 100MA SOT23-5. TrustCompo combines the available model, brand, hierarchy, and specification details around LD2981CM33TR so buyers can move faster from review to quotation.

RoHS

Datasheet

LD2981CM33TR PMIC - Voltage Regulators - Linear by STMicroelectronics | TrustCompo

Pictures are for reference only. Please contact us for the latest pictures.

Traceability and authenticity checks

Fast RFQ turnaround

Documentation support

Pre-shipment inspection review

Part Number

LD2981CM33TR

Internal code

TCE000118273

Package

SOT23

Manufacturer

STMicroelectronics

Key specifications

Series

Min Quantity

Availability

In Stock

Stock can move quickly. Send an RFQ to confirm live inventory, lead time, final price, and documents before purchase.

In Stock

21,000

Available

21,000

MOQ

Package

SOT23

Lead time

Confirm lead time

Price

Tier pricing listed

Requested quantity

Price Range

Due to different local policies, please contact us for the latest quotation.

Quantity	Unit Price
1	$0.56
10	$0.37
30	$0.28
100	$0.22
500	$0.21
1,000	$0.19

Technical document

Open The Official Datasheet

Review the latest datasheet for LD2981CM33TR from STMicroelectronics in a separate tab so engineers and buyers can check package, electrical characteristics, and application details without leaving this product page.

View LD2981CM33TR Datasheet

Why request a quote

Use the RFQ step to confirm the commercial and documentation details buyers usually need before placing an order.

RoHS, REACH, and lead-free documentation can be confirmed during RFQ

Traceability and Certificate of Conformance support available on request

Pre-shipment inspection report support for quality review

Trust signals

Globally recognized certifications

4 certifications

Visible certifications work best when they are paired with clear operational promises around traceability, handling, and inspection.

ISO 9001

Quality management processes for more consistent sourcing and handling.

AS9120B

Aerospace-focused distribution controls for traceability and reliability.

ISO 14001

Environmental management discipline across warehouse and operating workflows.

ESD Control

Electrostatic handling standards to help protect sensitive components.

Ordering workflow

Understand how to order and what policies support the purchase

Use this section to see the fastest ordering path and the policy pages buyers usually review before confirming a component order.

How to order this product

A simple B2B flow helps engineering and procurement teams move from part review to commercial confirmation.

Confirm part and quantity

Review the part number, package, key specs, and target quantity so the quote request reflects the exact sourcing scope your team needs.

Send RFQ or sample request

Use Quick Quote for commercial pricing or Request Sample when engineering validation is still in progress and a smaller evaluation quantity is needed.

Align delivery, payment, and documentation

Before final release, confirm stock timing, shipment method, payment arrangement, and any traceability or inspection documents required by your process.

Policies buyers usually check

These pages explain the operating rules around samples, shipping, payment, and quality support before you place the order.

Get a Sample

Request engineering samples to evaluate fit, validate alternatives, and keep design decisions moving before a larger order is placed.

Request evaluation samples

Shipping & Delivery

Review shipping origin, carrier options, delivery methods, and the practical factors that affect transit timing for global component orders.

Review shipping details

Payment Terms

Understand supported payment methods, invoice handling, quote currency, and the commercial boundaries used for international B2B orders.

Review payment terms

Quality & Traceability Center

See how incoming inspection, outgoing verification, traceability support, certifications, and additional testing fit into our quality workflow.

Review quality controls

Structured product content

Review The Product The Way Buyers Actually Evaluate It

Review overview, detailed specifications, and related sourcing content in one structured flow without scanning separate oversized sections.

Product overview

Overview

The LD2981CM33TR is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 1A. This device is particularly useful in applications where a reliable power supply is critical, such as in portable devices, microcontrollers, and other electronic circuits that require a consistent voltage level.

Key Features:

Output Voltage: The LD2981CM33TR provides a fixed output voltage of 3.3V, making it suitable for powering various digital circuits and components that operate at this voltage level.
Low Dropout Voltage: The LDO features a low dropout voltage, typically around 300mV at full load, which allows it to maintain regulation even when the input voltage is only slightly above the output voltage. This is particularly advantageous in battery-powered applications where maximizing battery life is essential.
Output Current: The regulator can deliver up to 1A of output current, making it capable of powering a range of devices without overheating or entering thermal shutdown.
Thermal Protection: The LD2981CM33TR includes built-in thermal protection, which prevents damage to the device in case of overheating. This feature ensures reliable operation under varying load conditions.
Short-Circuit Protection: The device is equipped with short-circuit protection, which safeguards the regulator and the connected load from damage in the event of a fault condition.
Low Quiescent Current: The LDO has a low quiescent current, which is beneficial for battery-operated devices, as it helps to extend battery life by minimizing power consumption when the device is idle.
Package Type: The LD2981CM33TR is available in a compact surface-mount package (CM), which facilitates easy integration into printed circuit boards (PCBs) and helps save space in electronic designs.
Operating Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for use in various environmental conditions.
Input Voltage Range: The LD2981CM33TR can accept a wide input voltage range, typically from 4.5V to 15V, allowing it to be used in diverse applications with different power supply requirements.

Applications:

The LD2981CM33TR is ideal for a variety of applications, including:

Powering microcontrollers and digital signal processors (DSPs)
Supplying power to sensors and other peripheral devices
Use in portable and battery-operated devices
Power management in automotive and industrial applications
Any application requiring a stable 3.3V power supply with low dropout characteristics

Conclusion:

Overall, the LD2981CM33TR from STMicroelectronics is a versatile and reliable LDO voltage regulator that provides a stable 3.3V output with a range of protective features, making it an excellent choice for various electronic applications. Its low dropout voltage, thermal and short-circuit protection, and compact package design enhance its usability in modern electronic circuits.

Fast scan