LM2678SD-ADJIn StockTexas Instruments
LM2678SD-ADJ is a Simple Switcher step-down voltage regulator IC with adjustable output, 8V–40V input range, and pulse width modulation control. From $2.78, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- LM2678SD-ADJ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7800(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage with wide 8V to 40V input range
- Voltage-mode PWM control for stable regulation
- Single-function step-down switching regulator in compact SO-14 package
- Supports up to 40V input for industrial and automotive applications
Applications
The LM2678SD-ADJ is widely used in industrial power supplies, automotive electronics, and distributed power systems requiring efficient DC-DC step-down conversion. Its wide input voltage range makes it suitable for battery-powered equipment and 24V/12V bus regulation. Typical applications include embedded systems power management, telecom equipment, and bench-top instruments.
Specifications
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-XDSO-N14 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 8.75A |
| Output Voltage-Max | 1.234V |
| Output Voltage-Min | 1.186V |
| Output Voltage-Nom | 1.21V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | SOLCC14,.2,32 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 280kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.8mm |
| Terminal Position | DUAL |
| ## LM2678SD-ADJ Alternates Showing results | Image |
| Package | Other |
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 LM2678SD-ADJ:
Switching Regulator, Voltage-mode, 8.75A, 280kHz Switching Freq-Max
Frequently Asked Questions
What is the input voltage range of the LM2678SD-ADJ?
The LM2678SD-ADJ supports an input voltage range from 8V to 40V, with a nominal operating voltage of 12V, making it suitable for a wide variety of industrial and automotive power supply designs.
What control technique does the LM2678SD-ADJ use?
The LM2678SD-ADJ uses voltage-mode pulse width modulation (PWM) as its control technique, which provides stable output regulation and predictable loop compensation for step-down (buck) converter designs.
What package is the LM2678SD-ADJ available in?
The LM2678SD-ADJ is available in a 14-pin small outline (SO-14 / R-XDSO-N14) package, offering a compact footprint suitable for space-constrained PCB layouts in switching regulator applications.
What are typical applications for the LM2678SD-ADJ?
Typical applications include industrial power supplies, automotive electronics, embedded system power management, telecom equipment, and any design requiring efficient adjustable-output step-down voltage regulation from an 8V to 40V source.
Related Guides
Is Buying Electronic Components from Chinese Suppliers Safe? A 2025–2026 Buyer's Guide
A 2025–2026 buyer's guide to sourcing electronic components from Chinese suppliers: real risks, authorized vs. broker channels, and a 5-point safety framework.
Apr 22, 2026
BOM Optimization: How to Reduce Electronic Component Costs Without Sacrificing Quality
Practical strategies for reducing BOM costs by 15-30% through smart component selection, supplier diversification, and procurement optimization.
Apr 9, 2026
Top 10 Microcontrollers in 2025: A Comprehensive Comparison Guide
Detailed comparison of the most popular MCUs in 2025 — STM32, ESP32, RP2040, nRF52, and more. Specs, pricing, ecosystem, and use-case recommendations.
Apr 9, 2026
How to Read an IC Datasheet: A Practical Guide for Engineers
Master the art of reading IC datasheets. Learn what every section means, which specs matter most, and how to extract the information you need for your design.
Apr 9, 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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.1500 | $6.15 |
| 40+ | $5.9466 | $237.86 |
| 100+ | $4.6200 | $462.00 |
| 500+ | $3.1200 | $1560.00 |
| 1000+ | $2.9500 | $2950.00 |
| 10000+ | $2.7800 | $27800.00 |
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.”