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1 Introductions
1.1 Background
1.2 Performance Specification Summary
User's Guide
SLUU279 – August 2007
bq24018 (bqTINY™)
Contents
1 Introductions .................................................................................................................. 1
2 Test Summary ................................................................................................................ 2
3 Reference ..................................................................................................................... 4
4 Schematic, Physical Layouts, and Bill of Materials ...................................................................... 4
List of Figures
1 EVM Schematic Diagram ................................................................................................... 5
2 Assembly View ............................................................................................................... 6
3 Top Layer ..................................................................................................................... 6
4 Bottom Layer ................................................................................................................. 7
List of Tables
1 Performance Specification Summary ..................................................................................... 2
2 Bill of Materials ............................................................................................................... 7
This user's guide describes the bq24018 (bqTINY™) evaluation module. The EVM provides a convenient
method for evaluating the performance of a charge-management solution for portable applications using
the bq24018 product family. A complete designed and tested charger is presented. The charger is
designed to deliver up to 1 A of continuous charge current, but is programmed for 0.7 A, for single-cell
Li-Ion or Li-Pol applications using a dc power supply.
The bqTINY series are highly integrated Li-Ion and Li-Pol linear charge-management devices targeted at
space-limited portable applications. In a small package, the bqTINY series offer integrated PowerFET and
current sensor, reverse blocking diode, high-accuracy current and voltage regulation, charge status, and
charge termination.
The bqTINY charges the battery in three phases: conditioning, constant current, and constant voltage.
Charge terminates on the basis of minimum current. An internal charge-timer provides backup safety for
charge termination. The bqTINY automatically restarts the charge if the battery voltage falls below an
internal threshold and automatically enters sleep mode when V
CC
supply is removed.
This section summarizes the performance specifications of the EVM. Table 1 gives the performance
specifications of the EVM.
bqTINY is a trademark of Texas Instruments.
SLUU279 – August 2007 bq24018 (bqTINY™) 1
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