TIDA-00044

USB Li-Ion Battery Charger and Power-Path Management Reference Design

TIDA-00044

Design files

Overview

This reference design delivers up to 1000 mA of continuous current to the battery output when programmed with a resistor on the ISET pin and is programmed at the factory for ~540mA. The USB current limit modes are selected by the ISET2 pin and limits current to a maximum of 500 mA (logic high) or 100 mA (float or high impedance). A low on the ISET2 pin programs the charge current using the ISET resistor.

Features
  • Number of series cells: 1S
  • Maximum input volts: 12 V
  • Maximum charge current: 1 A
  • Linear topology

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.

TIDU099.PDF (424 K)

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

TIDR069.PDF (113 K)

Detailed schematic diagram for design layout and components

TIDR070.PDF (42 K)

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

TIDU100.PDF (132 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24072Standalone 1-cell 1.5-A linear battery charger, Power Path, 4.2-V VBAT and VOUT=VBAT + 225mV

Data sheet document-pdfAcrobat PDF
Battery fuel gauges

BQ27421-G1System-side(tm) fuel gauge with integrated Sense Resistor | battery gas gauge

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

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report TIDA-00044 Test Results Aug. 26, 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. ​​​​​​​​

Videos