LM2678SD-ADJ Texas Instruments Integrated Circuit (Other) In Stock
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
ADSP-BF548BBCZ-5A Blackfin DSP Design Guide: Clocking, DDR, and Peripheral Configuration
Complete design guide for the ADSP-BF548BBCZ-5A 533 MHz Blackfin DSP: PLL sequencing, DDR memory timing, power rail order, and peripheral configuration for HMI, audio, and communications applications.
Jun 11, 2026
CL05B104KO5NNNC & 0402 X7R MLCC Selection Guide: How to Choose a 100 nF Decoupling Capacitor
A practical guide to selecting 100 nF 0402 X7R MLCCs for bypass and decoupling. Compare CL05B104KO5NNNC, CL21B104KBCNNNC, CL05B103KB5NNNC and choose the right voltage rating, dielectric, and package.
Jun 11, 2026
ADSP-BF706BCPZ-4 Selection Guide: How to Choose a Blackfin+ DSP for Your Embedded Design
Compare ADSP-BF706BCPZ-4, BF548BBCZ-5A, and BF512BSWZ-4 on clock speed, memory, peripherals, and power to select the right Blackfin+ DSP.
Jun 10, 2026
ADC128S102 Selection Guide: How to Choose the Right 8-Channel 12-Bit SAR ADC
Compare ADC128S102 variants by supply voltage, temperature range, package, and qualification to pick the right 8-channel 12-bit SAR ADC for your design.
Jun 10, 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+ | $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.”