2A Single input I2C/standalone switch mode li-ion battery charger reference design


Design files


This reference design contains highly integrated single cell Li-Ion battery chargers targeted for space-limited, portable applications with high capacity batteries. The solution includes a single cell charger with a single input that operates from either a USB port or AC wall adapter for a versatile solution. BC1.2 compliant D+/D detection allows for recognition of CDP, DCP, SDP, and non-standard USB adapters. The use of an accessory dead battery provision (DBP) pin allows for the system to sync a dead battery state in order to enable/disable the BC1.2 detection in the case of an external USB-PHI. The user's guide includes board specifications, the schematic diagram, bill of materials, and board layout.

  • # Series Cells: 1S
  • Max Input Volts: 10.5V
  • Max Charge Current: 2A
  • Topology: Switch mode
  • Communication: I2C
  • Features: USB Detection

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU107.PDF (998 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR077.PDF (44 K)

Detailed schematic diagram for design layout and components

TIDR078.PDF (26 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDU108.PDF (269 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ242501-cell, 2-A, I2C controlled buck battery charger with 1uA in SYSOFF mode and TS disable function

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report TIDA-00048 Test Results Aug. 27, 2013

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​