下载
User's Guide
SLVU274C–November 2008–Revised May 2010
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 ............................................................................................................... 3
5 Schematic .................................................................................................................... 7
6 Physical Layouts ............................................................................................................ 8
7 Bill of Materials ............................................................................................................. 11
8 References ................................................................................................................. 14
List of Figures
1 Test Diagram ................................................................................................................ 4
2 Modes of Operation Tested in Steps 11 Through 13 .................................................................. 6
3 Charger Profile With EN1 = VSS and EN2 = HI, Programmed by ISET............................................. 6
4 Charge Enabled, Pulled High, Then Low – Disables Charge......................................................... 7
5 Top Assembly View......................................................................................................... 8
6 Board Layout – Top Etch Layer........................................................................................... 9
7 Board Layout – Bottom Etch Layer ..................................................................................... 10
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 ............................................................................................... 11
5 HPA282B Bill of Materials (Continued)................................................................................. 12
6 HPS252B Bill of Materials................................................................................................ 13
7 HPA502A Bill of Materials................................................................................................ 14
1
SLVU274C–November 2008–Revised May 2010 bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion —and Li-Polymer
Charge Management IC EVM
Copyright © 2008–2010, Texas Instruments Incorporated
