Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The TPS543B25TRASR is a high-efficiency 18V, 25A synchronous buck converter with an internally compensated, fixed-frequency Advanced Current Mode (ACM) control architecture that generates output voltages from 0.5V to 7V while operating in FCCM mode for extended periods of time. The device offers high efficiency and operates at switching frequencies up to 2.2MHz, making it suitable for designs that require a small solution size. The fixed frequency controller can operate from 500kHz to 2.2MHz and can be synchronised to an external clock via the SYNC pin. Other features include a high accuracy voltage reference, two-wire remote sensing, selectable soft-start time, monotonic start-up to pre-biased output, selectable current limiting, adjustable UVLO via the EN pin, and full fault protection.

Features

- Integrated 6.5mΩ and 2mΩ MOSFETs

- Input voltage range of 4V to 18V

- Fixed frequency, internal compensation, advanced current mode (ACM) control

- 0.5V to 7V output voltage range

- True differential remote sensing amplifier (RSA)

- Three selectable PWM ramp options to optimise control loop performance

- Five selectable switching frequencies: 500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz

- Synchronised to an external clock

- 0.5V with ±0.5% voltage reference accuracy over the full temperature range

- 1ms, 2ms, 4ms and 8ms selectable soft-start times

- Monotonic start-up to pre-biased output

- Selectable current limit supporting 25A and 20A operation

- Enable Terminal with Adjustable Input Undervoltage Lockout

- Power Normal Output Monitor

- Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overheat protection

-40°C to 150°C operating junction temperature range

- 2.5mm × 4.5mm, 17-pin WQFN-HR package with 0.5mm pitch

Simplified Application

Applications

- Wireless and wired communications infrastructure equipment

- Fibre-optic networks

- Test and measurement

- Medical and healthcare

• 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.