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Product details

Parameters

Number of series cells 2 Charge current (Max) (A) 11 Operating Vin (Max) (V) 22 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 7 Battery charge voltage (Max) (V) 9.54 Absolute Vin (safety rating) (Max) ((V)) 40 Control topology Flash Charger Control interface I2C Features Input OVP, Integrated ADC Operating Vin (Min) (V) 6 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

DSBGA (YFF) 80 16 mm² 3.235 x 4.111 open-in-new Find other Battery charger ICs

Features

  • 98.6% peak efficiency switched cap parallel charger supporting 2-cell battery and 8-A fast charge
  • Patent pending dual phase switched cap architecture optimized for highest efficiency
    • Input voltage is 2x battery voltage (7.0V to 9.54V)
    • Output current is 2x of input current (up to 4.75A)
    • Reduces power loss across input cable
  • Integrated 7-A bypass mode fast charge
    • 13mΩ charging path resistance for high current operation
  • Dual-input power mux controller for source selection
  • Support wide range of input voltage

    • Up to 22-V operational input voltage

    • Maximum 40-V input voltage with optional external ACFET and 28-V without external ACFET

  • Parallel charging with synchronized dual BQ25980 operations for up-to 12-A charging current

  • Integrated programmable protection features for safe operation
    • Input over-voltage protection (BUSOVP) and battery over-voltage protection (BATOVP)
    • Input over-current protection (BUSOCP) and battery over-current protection (BATOCP)
    • Output over-voltage protection (VOUTOVP)
    • Input under-current protection (BUSUCP) and input reverse-current protection (BUSRCP) to detect adapter unplug and prevent boost-back
    • Input short-circuit protection (BUSSCP)
    • Battery and connector temperature monitoring (TSBAT_FLT and TSBUS_FLT)
    • Junction over-temperature protection (TDIE_FLT)
    • Optional input over-voltage protection with external ACFET up to 40V
  • Programmable settings for system optimization
    • Interrupts and interrupt masks
    • ADC readings and configuration
  • Integrated 16-bit ADC for voltage, current and temperature monitoring

All trademarks are the property of their respective owners.

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Description

The BQ25980 is a 98.6% peak efficiency, 8-A battery charging solution using dual-phase switched cap architecture for 2-cell Li-ion battery. The switched cap architecture allows the cable current to be half the charging current, reducing the cable power loss and limiting temperature rise. The dual-phase architecture increases charging efficiency and reduces the input and output cap requirements. When used with a main charger such as BQ25790, the system enables the fast charging at the very low power loss from pre-charge through constant current (CC), constant voltage (CV), and termination.

The BQ25980 also supports 7-A bypass mode charge (previously called battery switch charge) through internal MOSFETs. The Rdson in bypass mode charging path is less than 13mΩ for high current operation. The integrated bypass mode allows backward compatibility of 10-V fast charging adapter to charge 2-cell battery.

The device supports dual input configuration through integrated mux control and driver for external N-FETs. It also allows single input with no external N-FET or single N-FET.

The device integrates all the necessary protection features to support safe charging, including input over-voltage and over-current protection, output over-voltage and over-current protection, input under-current and reverse-current protection, input short circuit protection, temperature sensing for the battery and cable, and junction over-temperature protection in both switched cap and bypass mode.

The device includes a 16-bit analog-to-digital converter (ADC) to provide VAC voltage, bus voltage, bus current, output voltage, battery voltage, battery current, input connector temperature, battery temperature, junction temperature, and other calculated measurements needed to manage the charging of the battery from the adapter, or wireless input, or power bank.

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More information

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Technical documentation

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Type Title Date
* Data sheet BQ25980 I2C Controlled, 2-Cell, 8-A Switched Cap Parallel Battery Charger with Integrated Protection and Dual-Input Selector datasheet Sep. 14, 2020
Technical article When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical article Should I use a linear charger or a switching charger? Oct. 31, 2015
Technical article Summertime and the livin' is easy Jun. 20, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
149
Description
The BQ25980 evaluation module (EVM) is a complete charger module for evaluating the highly-integrated BQ25980 switched cap battery charger in WCSP package for 2-cell Li-ion and Li-polymer batteries in a wide range of smartphones and tablets. The BQ25980EVM presents a complete fast charging solution (...)
Features
  • 98.6% peak efficiency switched cap charger supporting 2-cell battery and 8-A fast charge
  • Parallel charging with synchronized dual BQ25980 operation for up to 12-A charging current
  • Integrated 7-A bypass mode fast charge
  • Dual-input power mux controller for input source selection
  • Integrated programmable (...)

Software development

DRIVER OR LIBRARY Download
Linux driver for BQ25980
BQ25980SW-LINUX The Linux driver supports the BQ25980 I2C Controlled 2-cell, 8-A switched cap parallel battery charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.

Linux mainline status

Available in Linux mainline: Yes
Available through git.ti.com: No

(...)

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 80 View options

Ordering & quality

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