LP5951MGX-1.3/NOPB Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The LP5951MGX-1.3/NOPB is a fixed 1.3 V output low-dropout linear regulator from Texas Instruments with 200 mV typical dropout voltage, 1.8 V to 5.5 V input range, and a 5-pin SOT-23 package. It is RoHS compliant and suited for powering low-voltage digital ICs and RF modules from single-cell Li-ion or dual-cell battery sources. Available from global distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- LP5951MGX-1.3/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2979(MOQ 1000)
- 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 LP5951MGX-1.3/NOPB?
- Fixed 1.3 V output with 200 mV typical dropout voltage enables efficient regulation from 1.5 V or single Li-ion cells near end-of-charge
- 1.8 V to 5.5 V input range with 6.5 V absolute maximum covers single-cell and dual-cell battery supplies plus 5 V USB rails
- Compact 5-pin SOT-23 package with minimal external capacitor requirement simplifies layout in space-constrained portable and IoT designs
What is LP5951MGX-1.3/NOPB used for?
The LP5951MGX-1.3/NOPB is commonly used to supply 1.3 V core voltage rails for microcontrollers, FPGAs, and RF transceiver ICs in portable consumer electronics and IoT sensor nodes powered from single Li-ion or dual-AA cells. Its low 200 mV dropout characteristic also makes it suitable for always-on power management subsystems in wearables and wireless modules where battery efficiency is critical.
What are the specifications of LP5951MGX-1.3/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.35V |
| Dropout Voltage1-Nom | 0.2V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 1.8V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.00481% |
| Load Regulation-Max | 0.01937% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 1.326V |
| Output Voltage1-Min | 1.274V |
| Output Voltage1-Nom | 1.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP5/6,.08 |
| Package Shape | RECTANGULAR |
| 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 | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3.5% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LP5951MGX-1.3/NOPB datasheet?
LP5951MGX-1.3/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LP5951MGX-1.3/NOPB?
Compatible alternatives and drop-in replacements for LP5951MGX-1.3/NOPB:
Frequently Asked Questions
What is the dropout voltage of the LP5951MGX-1.3/NOPB and why does it matter for battery-powered devices?
The LP5951MGX-1.3/NOPB has a typical dropout voltage of 200 mV and a maximum of 350 mV. This means it can regulate a stable 1.3 V output from an input as low as 1.5 V, allowing a single-cell Li-ion battery to power the rail until the cell discharges to approximately 1.5 V, extending usable runtime by tens of minutes compared to regulators with 500 mV or higher dropout.
What input voltage range does the LP5951MGX-1.3/NOPB support, and which battery chemistries are compatible?
The LP5951MGX-1.3/NOPB accepts input voltages from 1.8 V to 5.5 V (absolute maximum 6.5 V), covering single-cell Li-ion (3.6 V to 4.2 V), dual-cell NiMH (2.4 V to 3.0 V), and 5 V USB power rails. This wide range makes it versatile across battery-powered and USB-powered products without requiring input clamping or protection components in standard applications.
How does the fixed 1.3 V output of LP5951MGX-1.3/NOPB compare to an adjustable LDO for powering an FPGA core?
A fixed-output LDO like the LP5951MGX-1.3/NOPB eliminates the external resistor divider required by an adjustable regulator, reducing external component count from 3 parts to 2 capacitors. For FPGA core rails specified at exactly 1.3 V, the fixed variant also avoids resistor tolerance errors that can push output voltage outside the ±3% FPGA core specification window, improving yield in high-volume production.
What package does the LP5951MGX-1.3/NOPB use and how does it help in a compact IoT module design?
The LP5951MGX-1.3/NOPB is housed in a 5-pin SOT-23 package measuring approximately 2.9 mm × 1.6 mm, one of the smallest through-SMT footprints for LDO regulators. Combined with only 2 external bypass capacitors (typically 1 µF each), the complete power supply occupies under 20 mm² of board space, fitting easily alongside BLE SoCs or MEMS sensors in densely packed IoT module layouts.
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 |
|---|---|---|
| 1000+ | $0.3988 | $398.80 |
| 3000+ | $0.3500 | $1050.00 |
| 100000+ | $0.2979 | $29790.00 |
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