Texas Instruments bq24072RGTR, User Manual

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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
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2
2 Considerations When Testing and Using bq24072/3/4/5/9(T) and bq24230/2 ICs
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2
3 Performance Specification Summary
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3
4 Test Summary
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3
5 Schematic
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7
6 Physical Layouts
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8
7 Bill of Materials
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11
8 References
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14
List of Figures
1 Test Diagram
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4
2 Modes of Operation Tested in Steps 11 Through 13
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6
3 Charger Profile With EN1 = VSS and EN2 = HI, Programmed by ISET
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6
4 Charge Enabled, Pulled High, Then Low – Disables Charge
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7
5 Top Assembly View
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8
6 Board Layout – Top Etch Layer
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9
7 Board Layout – Bottom Etch Layer
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10
List of Tables
1 Ordering Information
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2
2 Performance Specification Summary for bq24072/3/4/5/9(T) and bq24230/2 EVMs
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3
3 bq240xx
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4
4 HPA282B Bill of Materials
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11
5 HPA282B Bill of Materials (Continued)
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12
6 HPS252B Bill of Materials
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13
7 HPA502A Bill of Materials
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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
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