LP2981AIM5-3.3/NOPB Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
LP2981AIM5-3.3/NOPB is a micropower 100 mA ultra low-dropout LDO regulator in a compact SOT-23-5 package. It features a typical dropout voltage of only 0.2 V at full load with input voltage range of 4.3 V to 16 V. Ideal for battery-powered devices, portable electronics, and space-constrained designs requiring stable 3.3 V regulation.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- LP2981AIM5-3.3/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5140(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LP2981AIM5-3.3/NOPB?
- 100 mA output current capability with ultra low-dropout voltage of only 0.2 V (typical), minimizing power loss
- Wide input voltage range from 4.3 V to 16 V, compatible with a broad range of power sources
- Compact SOT-23-5 package ideal for space-constrained PCB designs and portable applications
- Fixed 3.3 V output with tight regulation, suitable for microcontroller and sensor supply rails
- Lead-free (Pb-free) JESD-609 e3 compliant, meeting RoHS environmental requirements
What is LP2981AIM5-3.3/NOPB used for?
The LP2981AIM5-3.3/NOPB is well-suited for battery-powered portable devices such as smartphones, wearables, and handheld instruments where low quiescent current and minimal dropout voltage extend battery life. It is also used in IoT sensor nodes and embedded systems requiring a stable 3.3 V supply rail from Li-ion or alkaline battery stacks. Additionally, its compact SOT-23-5 footprint makes it ideal for space-constrained designs including USB-powered accessories and point-of-load regulation on multi-rail PCBs.
What are the specifications of LP2981AIM5-3.3/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.375V |
| Dropout Voltage1-Nom | 0.2V |
| Input Voltage Absolute-Max | 16V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 4.3V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.0124% |
| Load Regulation-Max | 0.0016335% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.1A |
| Output Voltage1-Max | 3.3825V |
| Output Voltage1-Min | 3.2175V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2.5% |
| ## LP2981AIM5-3.3/NOPB Alternates Showing results | Image |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China, Malaysia, Philippines |
Where can I find the LP2981AIM5-3.3/NOPB datasheet?
LP2981AIM5-3.3/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LP2981AIM5-3.3/NOPB?
Compatible alternatives and drop-in replacements for LP2981AIM5-3.3/NOPB:
suggested
suggested
suggested
Frequently Asked Questions
What is the dropout voltage of the LP2981AIM5-3.3/NOPB at full load?
The LP2981AIM5-3.3/NOPB has a typical dropout voltage of 0.2 V and a maximum of 0.375 V at the full 100 mA output current. This ultra-low dropout characteristic allows operation with input voltages as low as 4.3 V while maintaining a regulated 3.3 V output.
What is the input voltage range supported by the LP2981AIM5-3.3/NOPB?
The LP2981AIM5-3.3/NOPB supports an input voltage range from 4.3 V minimum to 16 V maximum (absolute maximum 16 V). This wide range makes it compatible with single-cell Li-ion batteries, 5 V USB rails, and 12 V regulated supplies commonly used in industrial and consumer electronics.
What package does the LP2981AIM5-3.3/NOPB come in and what is its footprint?
The LP2981AIM5-3.3/NOPB is housed in a SOT-23-5 (5-pin small-outline transistor) package, also identified by JESD-30 code R-PDSO-G5. This compact surface-mount package has a very small PCB footprint, making it ideal for portable and space-constrained applications.
Is the LP2981AIM5-3.3/NOPB RoHS compliant?
Yes, the LP2981AIM5-3.3/NOPB is fully RoHS compliant. It is lead-free (Pb-free code: Yes) and meets JESD-609 Code e3 requirements, making it suitable for use in environmentally conscious product designs and markets that mandate halogen-free or lead-free components.
What are typical applications for the LP2981AIM5-3.3/NOPB?
The LP2981AIM5-3.3/NOPB is commonly used as a local 3.3 V power supply in battery-powered IoT devices, wearables, handheld instruments, and USB accessories. Its low quiescent current and ultra-low dropout voltage make it especially effective in energy-sensitive applications where extending battery runtime is critical.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2850 | $1.28 |
| 65+ | $0.7775 | $50.54 |
| 79+ | $0.6425 | $50.76 |
| 258+ | $0.6220 | $160.48 |
| 312+ | $0.5140 | $160.37 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit