Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The LTC4121IUD-4.2 is a 400mA constant current/Constant voltage (CC/CV) synchronous step-down battery charger. In addition to CC/CV operation, the LTC4121 can adjust its input voltage to a programmable percentage of the input open circuit voltage. This method achieves maximum power operation with high impedance input power such as solar panels.

Features:

Wide input voltage range: 4.4V to 40V

Temperature compensated input voltage regulation for Maximum power point tracking (MPPT)

Adjustable floating voltage 3.5V to 18V (LTC4121)

Fixed 4.2V Floating Voltage option (LTC4121-4.2)

High efficiency: 95%

50mA to 400mA programmable charging current

±1% feedback voltage accuracy

Programmable charging current with 5% accuracy

Enhanced Heat resistance, flat (only 0.75mm high) 16-pin (3mm x 3mm) QFN package

Typical applications:

• Handheld instruments

• Solar powered equipment

• Industrial/military sensors and equipment

• 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.