I2C Controlled 4.5A Single Cell USB / Adaptor Charger Reference Design


Design files


This reference design is a highly-integrated switch-mode battery charge management and system power path management solution for single cell Li-Ion and Li-polymer battery in a wide range of tablet and other portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the design a truly flexible solution.


• # Series Cells: 1S
• Max Input Volts: 17V
• Max Charge Current: 4.5A
• Topology: Switch Mode

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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.

TIDU083.PDF (662 K)

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

TIDR051.PDF (48 K)

Detailed schematic diagram for design layout and components

TIDR052.PDF (33 K)

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

TIDU084.PDF (162 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24190I2C controlled 4.5A single cell USB / Adaptor charger

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Technical documentation

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Type Title Date
Test report TIDA-00035 Test Results Aug. 26, 2013

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