User's Guide
SLUUA77 – January 2013
1-A Single-Input, Single-Cell Li-Ion Battery Charger
This user’s guide describes the bq2404x evaluation module (EVM), how to perform a stand-alone
evaluation or interface with a host or system. The charger is designed to deliver 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 ~540 mA. 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.
Contents
1
Introduction
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2
2
Considerations With Evaluating the bq2404x
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2
3
Performance Specification Summary
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2
4
Test Procedure Summary
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3
4.1
Equipment
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3
4.2
Equipment Setup
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3
4.3
Jumper Setup
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4
4.4
ISET, PRETERM, and TS Setup
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4
4.5
Procedure
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5
5
Schematic, Physical Layouts and Bill of Materials
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6
5.1
Schematic
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6
5.2
Physical Layouts
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7
5.3
Bill of Materials
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9
List of Figures
1
Original Test Setup
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3
2
Battery Emulator
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4
3
bq2404x EVM Board Schematic
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6
4
bq2404x EVM Assembly Layer
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7
5
bq2404x EVM Top Layer
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7
6
bq2404x EVM Bottom Layer
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8
1
SLUUA77 – January 2013
1-A Single-Input, Single-Cell Li-Ion Battery Charger
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