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Product details

Parameters

Charge current (Max) (A) 1.5 Operating Vin (Max) (V) 10 Cell chemistry Li-Ion/Li-Polymer Absolute Vin (safety rating) (Max) ((V)) 20 Operating Vin (Min) (V) 4 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

DSBGA (YFP) 28 VQFN (RHL) 20 16 mm² 4.5 x 3.5 open-in-new Find other Battery charger ICs

Features

  • Single-Stage Wireless Power Receiver
    and Li-Ion/Li-Pol Battery Charger
    • Combines Wireless Power Receiver, Rectifier, and Battery Charger in a Single, Small Package
    • 4.20-V, 4.35-V, and 4.40-V Output Voltage Options
    • Supports a Charging Current up to 1.5 A
    • 93% Peak AC-DC Charging Efficiency
  • Robust Architecture
    • 20-V Maximum Input Voltage Tolerance,
      With Input Overvoltage Protection
    • Thermal Shutdown and Overcurrent Protection
    • Temperature Monitoring and Fault Detection
  • Compatible With WPC v1.2 Qi Industry Standard
  • Power Stage Output Tracks Rectifier and Battery Voltage to Ensure Maximum Efficiency Across the Full Charge Cycle
  • Available in Small DSGBA and VQFN Packages

All trademarks are the property of their respective owners.

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Description

The bq5105x device is a high-efficiency, Qi-compliant wireless power receiver with an integrated Li-Ion/Li-Pol battery charge controller for portable applications. The bq5105xB devices provide efficient AC-DC power conversion, integrates the digital controller required to comply with Qi v1.2 communication protocol, and provides all necessary control algorithms needed for efficient and safe Li-Ion and Li-Pol battery charging. Together with the bq500212A transmitter-side controller, the bq5105x enables a complete wireless power transfer system for direct battery charger solutions. By using near-field inductive power transfer, the receiver coil embedded in the portable device can pick up the power transmitted by transmitter coil. The AC signal from the receiver coil is then rectified and conditioned to apply power directly to the battery.  Global feedback is established from the receiver to the transmitter to stabilize the power transfer process.  This feedback is established by using the Qi v1.2 communication protocol.

The bq5105xB devices integrate a low-impedance synchronous rectifier, low-dropout regulator (LDO), digital control, charger controller, and accurate voltage and current loops in a single package.  The entire power stage (rectifier and LDO) use low-resistance N-MOSFETs (100-mΩ typical Rdson) to ensure high efficiency and low power dissipation.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet bq5105xB High-Efficiency Qi v1.2-Compliant Wireless Power Receiver and Battery Charger datasheet (Rev. F) Jun. 28, 2017
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
Technical articles The most popular battery charging solutions for wearables Apr. 20, 2015
More literature Battery Management Solutions for Wearable and Fitness Devices (Rev. C) Aug. 18, 2014
Application notes Test and Troubleshoot a Wireless Power Receiver Aug. 06, 2014
Technical articles Summertime and the livin' is easy Jun. 20, 2014
User guides bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver (Rev. C) Jun. 05, 2013
More literature Power Bank Charger ICs Feb. 25, 2013

Design & development

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

Software development

SUPPORT SOFTWARE Download
SLUC629A.ZIP (81 KB)

Design tools & simulation

CALCULATION TOOLS Download
SLUC577A.ZIP (60490 KB)

Reference designs

REFERENCE DESIGNS Download
500mA Wireless Charger BoosterPack with Gauge Reference Design
TIDA-00669 The TIDA-00669 is a BoosterPack reference design that provides a wireless charger and an entire battery managment solution to power any TI LaunchPad (www.ti.com/launchpad). This design is a  highly integrated power management solution that is well-suited for low power applications. The primary (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DSBGA (YFP) 28 View options
VQFN (RHL) 20 View options

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