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223 pcs
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223 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The Texas Instruments LM2678T-12 is an integrated circuit designed for step-down (buck) switching regulation, capable of handling loads up to 5A. It operates within a wide input voltage range of 8V to 40V and provides a fixed 12V output voltage with ±2% tolerance.
This device utilizes a low ON-resistance DMOS output switch for high efficiency, reaching up to 92%. It features a fixed internal oscillator operating at 260kHz, which allows for the use of smaller external components. The LM2678T-12 includes built-in thermal shutdown and current limiting for protection.
Designed for ease of use, the LM2678 series is part of the SIMPLE SWITCHER concept, requiring minimal external components for a complete design. It is housed in a TO-220-7 package with through-hole mounting.
Key electrical characteristics include a 5A output current capability, 260kHz switching frequency, and a wide operating temperature range of -40°C to 125°C (junction temperature).
| Qty | Low | High |
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| 1+ | $0.16 | $0.16 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The input voltage range is 8V to 40V.
The output is fixed at 12V with a maximum current of 5A.
The switching frequency is 260kHz.
Efficiency is up to 92%.
The junction temperature range is -40°C to 125°C.
It is available in a TO-220-7 through-hole package.
The output tolerance is ±2% maximum over full line and load conditions.