All prices are in US dollars.
Digi-Key Part Number LM2678S-5.0/NOPB-ND
Price Break Unit Price Extended Price
1 6.28000 6.28
10 5.67600 56.76
100 4.69920 469.92
500 4.09200 2,046.00
1,000 3.56400 3,564.00
2,500 3.43200 8,580.00
5,000 3.30000 16,500.00
Quantity Available Digi-Key Stock: 2,500
Can ship immediately

Factory Stock ?: 9,990

Manufacturer Part Number


Description IC REG BUCK 5V 5A TO263-7
Lead Free Status / RoHS Status Contains lead / RoHS compliant by exemption
Moisture Sensitivity Level (MSL) 3 (168 Hours)

Quantity Item Number ? Customer Reference

When requested quantity exceeds displayed pricing table quantities, a lesser unit price may appear on your order.
You may submit a request for quotation on quantities which are greater than those displayed in the pricing table.

Datasheets LM2678
Product Photos TO-263-8, D²Pak (7 Leads + Tab), TO-263CA
Product Training Modules SIMPLE SWITCHER® Regulators
Powering FPGAs with SIMPLE SWITCHER® LMZ3 Power Modules
Video File Wide VIN Power Design with LMZ3 SIMPLE SWITCHER Power Module
SIMPLE SWITCHER® Power Modules with High Power Density
SIMPLE SWITCHER Synchronous Regulator Family Overview
The Most Interesting Engineer in the World
Layout Tips for Radiated EMI Reduction in Your Designs
Thermal Design Made Simple
Loop Compensation Made SIMPLE
WEBENCH PCB Export for Synchronous SIMPLE SWITCHER Devices
Design Resources LM2678 Design with WEBENCH® Power Designer
Featured Product Create your power design now with TI’s WEBENCH® Designer
Manufacturer Product Page LM2678S-5.0/NOPB Specifications
EDA / CAD Models ? Download from Accelerated Designs
Standard Package ? 45

Integrated Circuits (ICs)


PMIC - Voltage Regulators - DC DC Switching Regulators

Packaging ? Tube?
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 8V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 5V
Voltage - Output (Max) -
Current - Output 5A
Frequency - Switching 260kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-263-8, D²Pak (7 Leads + Tab), TO-263CA
Supplier Device Package DDPAK/TO-263-7
Online Catalog Buck (Step-Down) IC
Other Names *LM2678S-5.0/NOPB
Alternate Package | This part is also available in the following packaging:
Digi-Key Part Number Manufacturer Part Number Manufacturer Packaging Quantity Available Unit Price Minimum Quantity
LM2678SX-5.0/NOPBTR-ND LM2678SX-5.0/NOPB Texas Instruments Tape & Reel (TR)? 1,500 - Immediate
3.28680 500
LM2678SX-5.0/NOPBCT-ND LM2678SX-5.0/NOPB Texas Instruments Cut Tape (CT)? 1,860 - Immediate
6.01000 1
LM2678SX-5.0/NOPBDKR-ND LM2678SX-5.0/NOPB Texas Instruments Digi-Reel®? 1,860 - Immediate
Digi-Reel® 1

Tape & Reel, Cut Tape and Digi-Reels are all derived from the same manufacturer’s part number. Inventory from Tape & Reel is used to fulfill Cut Tape and Digi-Reel orders and will impact the total quantity available.

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Wide VIN Power Design with LMZ3 SIMPLE SWITCHER Power Module
Wide VIN Power Design with LMZ3 SIMPLE SWITCHER Power Module

13:28:30 5/3/2016