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20 pcs
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20 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The LM2678SD-5.0 from Texas Instruments is a monolithic integrated circuit designed for step-down (buck) switching regulator applications. It is capable of driving loads up to 5A with excellent line and load regulation. This regulator achieves high efficiency, up to 92%, through the use of a low ON-resistance DMOS power switch.
Key electrical specifications include a wide input voltage range of 8V to 40V and a fixed 5V output voltage. It operates at a fixed switching frequency of 260kHz, allowing for the use of smaller external components. The device also features a low ON-resistance DMOS output switch (120 mΩ) and a typical quiescent current of 50μA when switched off.
The LM2678 series is designed for simplicity, requiring a minimum number of external components for a complete design. It includes built-in thermal shutdown and current limiting features. The operating junction temperature range is -40°C to +125°C.
This specific model, the LM2678SD-5.0, is supplied in a 14-VSON (5x6) package suitable for surface mounting. Its design makes it suitable for applications requiring efficient power conversion, such as battery chargers and system pre-regulators for linear voltage regulators.
| 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 fixed output voltage is 5V.
The maximum output current is 5A.
The input voltage range is 8V to 40V.
The switching frequency is 260kHz.
The package is 14-VSON Exposed Pad (5x6mm).
The operating junction temperature range is -40°C to 125°C.
Efficiency is up to 92%.