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The LT8643SIV synchronous buck regulator features a second generation quiet switcher architecture designed to minimise EMI emissions while providing high efficiency at high switching frequencies. This includes integrated bypass capacitors to optimise all internal fast current loops fast current loops, and by reducing layout to easily achieve excellent EMI performance by reducing layout sensitivity. This performance makes the LT8643SIV ideal for noise sensitive applications and environments. Peak current mode control with 30ns minimum on-time achieves high step-down ratios even at high switching frequencies, and the LT8643SIV features external compensation for current sharing and fast transient response at high switching frequencies. Burst mode operation enables ultra-low standby current consumption and forced continuous mode controls frequency. Harmonics are controlled over the entire output load range, while spread spectrum operation further reduces EMI emissions.

Product Attributes

Function: Buck

Output Configuration: Positive

Topology: Buck

Output Type: Adjustable

Number of Outputs: 1

Voltage - Input (Min): 3.4V

Voltage - Input (Max): 42V

Voltage - Output (Min/Fixed): 0.97V

Voltage - Output (Max): 42V

Current - Output: 6A

Frequency - Switch: 200kHz ~ 3MHz

Synchronous Rectifier: Yes

Operating Temperature: -40°C ~ 125°C (TJ)

Mounting Type: Surface Mount

Package/Shell: 24-TFQFN Exposed Pad

Supplier Device Package: 24-LQFN (4x4)

Applications

● Automotive and Industrial Goods

● General Purpose Buck

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.