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The LT8640S-2 synchronous buck regulator features a Silent Switcher architecture designed to minimise EMI emissions and provide high efficiency at high switching frequencies. Peak current mode control with a minimum turn-on time of 30ns achieves a high step-down ratio even at high switching frequencies.

Burst Mode® operation enables ultra-low standby current consumption, forced continuous mode controls frequency harmonics across the output load range or, alternatively, extended spectrum operation can further reduce EMI emission.

Features

Silent Switcher® architecture

Ultra-low EMI emission

Optional spread spectrum modulation

High efficiency at high frequencies

Up to 96% efficiency at 1MHz, 12V input to 5V output

Up to 95% efficiency over 2MHz, 12V input to 5V output range

Wide input voltage range: 3.4V to 42V

Maximum continuous output of 6A and peak output of 7A

Ultra-low quiescent current Burst Mode® operation

2.5µA IQ to regulate 12V input to 3.3V output (LT8640S-2)

Output ripple < 10mVP-P

External compensation: fast transient response and current equalisation (LT8643S-2)

Fast minimum switch-on time: 30ns

Low dropout under all conditions: 100mV at 1A

Forced continuous mode

Adjustable and synchronisable: 200kHz to 3MHz

Output soft-start and tracking

Small 24-pin 4mm × 4mm LQFN package

Applications

Automotive and industrial applications

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.