LM2678SX-12/NOPB Texas Instruments Integrated Circuit (Other) In Stock
LM2678SX-12/NOPB is a 5 A step-down switching regulator from Texas Instruments with a fixed 12 V output and an 8 V to 40 V input range. It operates in voltage-mode PWM control and integrates an internal power switch for simplified designs. From $3.20, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LM2678SX-12/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.1712(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
- Fixed 12 V output with 5 A peak switch current supports high-current industrial and automotive DC/DC conversion
- Voltage-mode PWM control with 8 V to 40 V wide input range accommodates diverse unregulated supply rails
- Integrated power switch and internal oscillator reduce external component count for a compact, efficient buck regulator design
Applications
LM2678SX-12/NOPB is designed for industrial power supplies, automotive electronics, and distributed 12 V point-of-load regulation where a wide input range of 8 V to 40 V is required. Its 5 A internal switch and voltage-mode PWM control make it suitable for powering motor drivers, embedded computing boards, and telecom equipment. The SO-7 package simplifies PCB layout in space-constrained systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| 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 | 24V |
| JESD-30 Code | R-PSSO-G7 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 5A |
| Output Voltage-Max | 37V |
| Output Voltage-Min | 1.23V |
| Output Voltage-Nom | 12V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP7H,.55,50TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 245 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 260kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM2678SX-12/NOPB:
Switching Regulator, Voltage-mode, 5A, 260kHz Switching Freq-Max, PSSO7
Switching Regulator, Voltage-mode, 5A, 260kHz Switching Freq-Max, BICMOS, PSSO7
Frequently Asked Questions
What is the input voltage range and output specification of LM2678SX-12/NOPB?
LM2678SX-12/NOPB accepts an input voltage from 8 V to 40 V and provides a fixed regulated 12 V output with a 5 A peak switch current, making it ideal for step-down conversion in industrial and automotive power systems with unregulated supply rails.
Which industrial applications benefit most from the LM2678SX-12/NOPB wide input range?
Applications powered from 24 V industrial bus rails or automotive 12 V to 36 V battery systems benefit from the 8 V to 40 V input range. Typical uses include motor-control boards, programmable logic controllers, and embedded computing modules requiring a stable 12 V at up to 5 A.
How does the LM2678SX-12/NOPB compare to discrete switching regulator designs in component count?
By integrating the power switch and internal oscillator, LM2678SX-12/NOPB eliminates separate FET, gate driver, and timing resistor components. This can reduce external component count by 3 to 5 parts per rail, shrinking PCB area and lowering assembly cost versus a discrete PWM controller solution.
Is LM2678SX-12/NOPB RoHS compliant, and what does the NOPB suffix indicate?
Yes, the NOPB suffix stands for No Lead (Pb-Free), confirming the device is manufactured without lead and complies with RoHS environmental directives. The part carries a Pb-free code of Yes, making it suitable for export to markets enforcing WEEE and RoHS regulations across 40 V-rated switching regulator designs.
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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 |
|---|---|---|
| 1+ | $7.5840 | $7.58 |
| 25+ | $4.8800 | $122.00 |
| 50+ | $4.6768 | $233.84 |
| 100+ | $4.3800 | $438.00 |
| 215+ | $4.1712 | $896.81 |
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