Texas Instruments bq24072, User Manual

Page: 1 / 22

1 SLVU274E – November 2008 – Revised January 2017
Submit Documentation Feedback
Copyright © 2008–2017, Texas Instruments Incorporated
bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion and Li-Polymer
Charge Management IC EVM
User's Guide
SLVU274E – November 2008 – Revised January 2017
bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion
and Li-Polymer Charge Management IC EVM
This user’s guide describes the bq24072/3/4/5/9(T) and bq24230/2 (bqTINY-III™) evaluation module
(EVM). The EVM provides a convenient method for evaluating the performance of a charge management
and system power solution for portable applications using the bq24072/3/4/5/9(T) and bq24230/2 product
families. A completely designed and tested module is presented. The charger is designed to deliver up to
1.5 A of continuous current to the system or charger for one-cell Li-ion or Li-polymer applications (see the
data sheet for correct device) using a dc power supply. The charger is programmed from the factory to
deliver 0.9 A of charging current. This EVM was designed as a stand-alone evaluation module, but it also
can be interfaced with the system and host via the connectors and headers.
Contents
1 Introduction
...................................................................................................................
2
2 Considerations When Testing and Using bq24072/3/4/5/9(T) and bq24230/2 ICs
.................................
2
3 Performance Specification Summary
.....................................................................................
3
4 Test Summary
................................................................................................................
4
5 Schematic
.....................................................................................................................
8
6 Physical Layouts
.............................................................................................................
9
7 Bill of Materials
.............................................................................................................
12
8 References
..................................................................................................................
15
List of Figures
1 Test Diagram
.................................................................................................................
5
2 Modes of Operation Tested in Steps 11 Through 13
...................................................................
6
3 Charger Profile With EN1 = VSS and EN2 = HI, Programmed by ISET
.............................................
7
4 Charge Enabled, Pulled High, Then Low – Disables Charge
..........................................................
7
5 Schematic
.....................................................................................................................
8
6 Top Assembly View
.........................................................................................................
9
7 Board Layout – Top Etch Layer
..........................................................................................
10
8 Board Layout – Bottom Etch Layer
......................................................................................
11
List of Tables
1 Ordering Information
........................................................................................................
2
2 Performance Specification Summary for bq24072/3/4/5/9(T) and bq24230/2 EVMs
...............................
3
3 bq240xx
.......................................................................................................................
4
4 HPA282B Bill of Materials
................................................................................................
12
5 HPA282B Bill of Materials (Continued)
..................................................................................
13
6 HPS252B Bill of Materials
.................................................................................................
14
7 HPA502A Bill of Materials
.................................................................................................
15
Trademarks
bqTINY-III is a trademark of Texas Instruments.