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The BQ25898DYFFR is a highly integrated 4A switch mode battery charge management and system power path management device for lithium ion and lithium polymer batteries. The device supports high input voltage fast charging.

Features

High efficiency 4A, 1.5MHz switch-mode buck charger

Charging efficiencies of up to 92% (at 3A charging current) and 91% (at 4A charging current)

Optimised for high voltage inputs (9V/12V)

Low-power PFM mode for light-load operation

USB On-the-Go (OTG), adjustable output voltage range of 4.5V to 5.5V

Optional 500KHz/1.5MHz boost converter with up to 2.4A output current

94% boost efficiency at 5V, 1A output current

Precise intermittent mode overcurrent protection

Single input, supports USB input and adjustable high voltage adapter

Supports 3.9V to 14V input voltage range

Input current limiting (100mA to 3.25A with 50mA resolution) with support for USB2.0, USB3.0 standards and high voltage adapters

Maximum power tracking via input voltage limit (up to 14V) for all types of adapters

Automatic detection of USB SDP, CDP, DCP, and non-standard adapters (bq25898)

Programmable D+/D- drivers for non-standard adapter handshaking

Remote battery sensing

Input current optimiser (ICO) to maximise input power without overloading the adapter

Resistance compensation between charger output and battery terminals (IRCOMP)

Highest battery discharge efficiency with 5mΩ battery discharge metal-oxide-semiconductor field-effect transistors (MOSFETs) for up to 9A discharge current

Integrated ADC for system monitoring

(voltage, temperature and charge current)

Narrow VDC (NVDC) power path management

Instantaneous turn-on when operating with dead or deeply discharged batteries

Ideal diode operation in battery management mode

BATFET control with support for transport mode, wake-up and full system reset

Flexible autonomous and I2C modes for optimal system performance

Highly integrated, including all MOSFETs, current sensing and loop compensation

Low 12µA battery leakage current with support for transport mode

High Accuracy

±0.5% charge voltage regulation

±5% charge current regulation

±7.5% input current regulation

Safe

Battery temperature sensing for charge and boost modes

Thermal regulation and thermal shutdown

Available in 2.8mm x 2.5mm 42-ball chip size ball pin grid array (DSBGA) package

Applications

- Smartphones

- Tablet computers

- Portable networking devices

• 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.