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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.
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SLUUA77 - January 2013
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Copyright © 2013, Texas Instruments Incorporated
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List of Figures
1-A Single-Input, Single-Cell Li-Ion Battery Charger
User's Guide
SLUUA77 - January 2013
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Summary of Contents for Texas Instruments bq2404 series
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Page 1: Table Of Contents
Battery Emulator ..................bq2404x EVM Board Schematic ................... bq2404x EVM Assembly Layer ....................bq2404x EVM Top Layer ....................bq2404x EVM Bottom Layer SLUUA77 – January 2013 1-A Single-Input, Single-Cell Li-Ion Battery Charger Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 2: Introduction
~125°C, thermal regulations reduces the programmed charge current. The EVM is set for 800 mA, by changing R1 to lower values, it can support up to 1000 mA. 1-A Single-Input, Single-Cell Li-Ion Battery Charger SLUUA77 – January 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 3: Test Procedure Summary
7. Connect the output side of the battery emulator in series with current meter (A2) to J2 (OUT and GND). Figure 1 Figure 2 as Reference. Battery Emulator Figure 1. Original Test Setup SLUUA77 – January 2013 1-A Single-Input, Single-Cell Li-Ion Battery Charger Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 4: Jumper Setup
• Use the VM3 to measure the Resistance across GND and TP4 • Adjust R4 until VM3 reads 2 kΩ ±100Ω 1-A Single-Input, Single-Cell Li-Ion Battery Charger SLUUA77 – January 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 5: Procedure
29. Measure on A#1 → I = 580 mA ±70 mA 30. Turn PS1 and PS2 off 31. Remove all test equipment from the UUT SLUUA77 – January 2013 1-A Single-Input, Single-Cell Li-Ion Battery Charger Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 6: Schematic, Physical Layouts And Bill Of Materials
Schematic, Physical Layouts and Bill of Materials www.ti.com Schematic, Physical Layouts and Bill of Materials Schematic Figure 3. bq2404x EVM Board Schematic 1-A Single-Input, Single-Cell Li-Ion Battery Charger SLUUA77 – January 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 7: Physical Layouts
Schematic, Physical Layouts and Bill of Materials www.ti.com Physical Layouts Figure 4. bq2404x EVM Assembly Layer Figure 5. bq2404x EVM Top Layer SLUUA77 – January 2013 1-A Single-Input, Single-Cell Li-Ion Battery Charger Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 8: Bq2404X Evm Bottom Layer
Schematic, Physical Layouts and Bill of Materials www.ti.com Figure 6. bq2404x EVM Bottom Layer 1-A Single-Input, Single-Cell Li-Ion Battery Charger SLUUA77 – January 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 9: Bill Of Materials
4. Ref designators marked with an asterisk ('**') cannot be substituted. All other components can be substituted with equivalent MFG's components. 5. Apply shunt to JMP1/2/4/5 and JMP3:2/3. Note J3 and J4 are test pins and don't have shunts (jumpers). SLUUA77 – January 2013 1-A Single-Input, Single-Cell Li-Ion Battery Charger Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 10 6. To get more than 800 mA output current of this design, consider changing the value of R1 to lower values Assembly Number HPA387-001 bq24040 HPA387-002 bq24041 HPA387-003 bq24045 1-A Single-Input, Single-Cell Li-Ion Battery Charger SLUUA77 – January 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
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Page 11: Regulatory Compliance Information
Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization. - Page 12 FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
- Page 13 Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp...
- Page 14 FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2013, Texas Instruments Incorporated...
- Page 15 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
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