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The BQ24781RUYR is a SMBus 1- to 4-cell step-down battery charge controller that supports hybrid boost mode.

The BQ24781RUYR has the following features:

Input and output ranges: Charges 1 to 4-cell battery packs from 4.5V to 24V adapters, with battery charging voltages ranging from 1.024V to 19.2V.

Control Topology: Switch-Mode Buck control topology.

Supported Battery Types: Supports multiple battery chemistries including Li-ion/Li-polymer, Li-FePO4, Ni-Cd, Ni-MH, and more.

Hybrid Boost Mode: Adapter and battery can be used together to power the system, which can be entered within 150μs to respond to ultra-fast transients; battery-only boost mode is also supported to extend battery runtime.

Input Current Limiting: Two levels of input current limiting for peak power to increase adapter power and reduce battery discharge.

Monitoring Features: Highly accurate power and current monitoring for CPU throttling, including full PROCHOT configuration, ±2% current monitor accuracy, ±5% system power monitor accuracy (PMON).

Auto Power Selection: Automatically selects either the adapter or battery as the NMOS power source, with the ACFETs turning on quickly within 100μs when removed from the battery to exit learning mode.

Programmability: Programmable input current, charge voltage, charge and discharge current limits with ±0.4% (16mV/step) charge voltage accuracy, ±2% (64mA/step) input current accuracy, ±2% (64mA/step) charge current accuracy, and ±2% (512mA/step) discharge current accuracy.

High level of integration: integrated battery LEARN function, battery presence monitor, boost mode indicator, loop compensation, BTST diode and other functions.

Safety features: Enhanced safety features such as over-voltage protection, over-current protection, battery, inductor and MOSFET short circuit protection.

Switching Frequency: 300kHz, 400kHz, 600kHz and 800kHz switching frequencies are supported.

Real-time system control: Real-time system control of ILIM pins to limit charge and discharge currents.

Low standby current: 0.65mA adapter standby quiescent current for Energy Star.

Operating Temperature Range: Operating temperature range of -40°C to 85°C.

Package: 4x4mm in a WQFN (RUY) 28-pin package.

The BQ24781RUY is intended for use in portable devices such as notebook computers, portable medical devices, portable instruments, and other portable devices that require efficient battery charging management. The BQ24781RUY is able to provide a highly efficient battery charging solution, while supporting a wide range of battery types and flexible system power management.

• 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.