LM2831XMFIn StockTexas Instruments
LM2831XMF is a 1.5A current-mode PWM step-down DC-DC regulator from Texas Instruments, operating from 3V to 5.5V input, featuring pulse width modulation control in a compact SOT-23-5 package. From $1.44 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LM2831XMF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4430(MOQ 107)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.5A output current with current-mode PWM control for fast transient response
- Wide input voltage range of 3V to 5.5V suits single-cell Li-Ion and 5V rail applications
- Compact SOT-23-5 package minimizes PCB footprint for space-constrained designs
- Pulse Width Modulation technique ensures high efficiency across load range
- Fixed-frequency operation reduces EMI and simplifies output filter design
Applications
The LM2831XMF is ideal for powering low-voltage digital logic and microcontrollers in portable consumer electronics such as smartphones, tablets, and wearables. It is well-suited for point-of-load regulation in IoT sensor nodes and wireless modules requiring efficient 5V to sub-3V conversion. Its compact SOT-23-5 footprint also makes it a strong candidate for space-constrained industrial handheld devices and battery-powered instrumentation.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 2.5A |
| Output Voltage-Max | 4.5V |
| Output Voltage-Min | 0.6V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1950kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| ## LM2831XMF 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the LM2831XMF?
The LM2831XMF operates from a minimum input voltage of 3V to a maximum of 5.5V, with a nominal input of 5V. This range makes it compatible with single-cell Li-Ion batteries and standard 5V power rails in embedded and portable systems.
What control mode does the LM2831XMF use and why does it matter?
The LM2831XMF uses current-mode pulse width modulation (PWM) control. Current-mode control provides inherent cycle-by-cycle current limiting, improved line and load transient response, and simpler loop compensation compared to voltage-mode designs, making it ideal for dynamic load applications.
What package is the LM2831XMF available in?
The LM2831XMF is available in a SOT-23-5 (5-pin small-outline transistor) package, which has a very small PCB footprint. This makes it suitable for space-constrained designs such as wearables, portable devices, and compact IoT modules.
What is the maximum output current of the LM2831XMF?
The LM2831XMF supports a maximum continuous output current of 1.5A. This is sufficient for powering microcontrollers, FPGAs at low core voltages, wireless radios, and other moderate-load digital or analog subsystems in battery-powered products.
What are typical applications for the LM2831XMF?
Typical applications include point-of-load DC-DC conversion in portable consumer electronics, IoT sensor nodes, wireless communication modules, industrial handheld instruments, and any design requiring efficient step-down regulation from a 3V to 5.5V supply to lower output voltages with up to 1.5A load.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 107+ | $1.8750 | $200.63 |
| 138+ | $1.8125 | $250.13 |
| 185+ | $1.6250 | $300.63 |
| 2000+ | $1.4831 | $2966.16 |
| 3000+ | $1.4641 | $4392.18 |
| 5000+ | $1.4430 | $7214.95 |
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