LP3981IMM-2.8 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments LP3981IMM-2.8 is an ultra low-dropout CMOS LDO voltage regulator fixed at 2.8V output in SOT-23-8 package. Features 132mV typical dropout voltage with 2.7V to 6V input range. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LP3981IMM-2.8 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra low dropout voltage of 132mV typical (200mV max) maximizes efficiency with minimal headroom from input to output
- Wide input voltage range of 2.7V to 6V supports single-cell Li-ion and multi-cell battery-powered designs
- Fixed 2.8V CMOS LDO output in compact SOT-23-8 package enables low-noise power delivery for RF and analog circuits
Applications
The LP3981IMM-2.8 is designed for powering sensitive analog and RF circuits in portable devices, including Bluetooth modules, GPS receivers, and wireless sensor nodes where low dropout and low noise are critical. Its 2.7V minimum input voltage makes it compatible with single-cell Li-ion batteries that commonly drop to 3V near end of discharge. The compact SOT-23-8 package minimizes PCB area in handheld devices, wearables, and IoT sensor applications.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.2V |
| Dropout Voltage1-Nom | 0.132V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e0 |
| Line Regulation-Max | 0.0151% |
| Load Regulation-Max | 0.041% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.3A |
| Output Voltage1-Max | 2.884V |
| Output Voltage1-Min | 2.716V |
| Output Voltage1-Nom | 2.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN 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 | CMOS |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 3% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LP3981IMM-2.8:
Frequently Asked Questions
What is the dropout voltage of the LP3981IMM-2.8?
The LP3981IMM-2.8 has a typical dropout voltage of 132mV and a maximum of 200mV. This ultra-low dropout characteristic allows the regulator to maintain a stable 2.8V output even when the input supply is only slightly above the output, extending usable battery life in portable applications.
What is the output voltage of the LP3981IMM-2.8?
The LP3981IMM-2.8 provides a fixed 2.8V regulated output voltage. This fixed output simplifies design by eliminating the need for external resistor dividers. The 2.8V level is commonly used for powering RF front ends, wireless chipsets, and analog sensors in battery-powered products.
What is the input voltage range of the LP3981IMM-2.8?
The LP3981IMM-2.8 accepts input voltages from 2.7V minimum to 6V maximum, with an absolute maximum of 6.5V. This range covers single-cell Li-ion batteries (2.7V to 4.2V), USB power (5V), and other common supply rails used in portable and IoT applications.
What package does the LP3981IMM-2.8 use and what are typical applications?
The LP3981IMM-2.8 comes in a compact SOT-23-8 surface-mount package (JESD-30 code S-PDSO-G8). It is commonly used in portable electronics, wearables, Bluetooth and Wi-Fi modules, GPS receivers, and other battery-powered designs where a low-noise, low-dropout 2.8V supply is required.
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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.
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