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bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion
This user's guide describes the bq2403x (bqTiny-III™) Evaluation Module. The EVM
provides a convenient method for evaluating the performance of a charge management
and system power solution for portable applications using the bq2403x product family.
A completly 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, x) using a dc power
supply. The charger is programmed from the factory to deliver 1 A of charging current.
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Considerations When Testing and Using bq2403x ICs
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Performance Specification Summary
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References
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Test Diagram
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bq2403x EVM Schematic
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Top Assembly View
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Board Layout - Top Etch Layer
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Board Layout - Second Etch Layer
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Board Layout - Third Etch Layer
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Board Layout - Bottom Etch Layer
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Performance Specification Summary For bq24030/1/2/5 EVMs
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Bill of Materials
bqTiny-III is a trademark of Texas Instruments.
SLUU207A - October 2004 - Revised January 2007
Submit Documentation Feedback
and Li-Pol Charge Management IC EVM
Contents
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List of Figures
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List of Tables
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SLUU207A - October 2004 - Revised January 2007
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bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion
and Li-Pol Charge Management IC EVM
User's Guide
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Summary of Contents for Texas Instruments bq2403 Series
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Page 1: Table Of Contents
......Performance Specification Summary For bq24030/1/2/5 EVMs ..................Bill of Materials bqTiny-III is a trademark of Texas Instruments. SLUU207A – October 2004 – Revised January 2007 bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion and Li-Pol Charge Management IC EVM Submit Documentation Feedback... -
Page 2: Introduction
www.ti.com Introduction Introduction The bqTiny-III powers the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination, and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source even when using a deeply discharged battery pack. -
Page 3: Test Summary
www.ti.com Performance Specification Summary Another critical feature is power handoff. The power handoff is initiated autonomously or by request. The PSEL (High/Low) sets which input source takes priority (AC or USB). This handoff happens immediately on request. The CE pin (going high) immediately enables the chip; disabling it (going low) delays handoff for 5 ms. - Page 4 www.ti.com Test Summary 1 kW − LDO GND To 500 mA USB PLUG Connector (High PWR Port) 10 W Alternate − Connection Li-ion, Single Cell 5.25 VDC Bat + (DC−) Bat − bq2403x Charger EVM − bqTiny-IIIE − HPA073 Figure 1. Test Diagram Test Procedure 1.
- Page 5 www.ti.com Test Summary 17. Verify V is within –50 mV of V 18. Remove short betwen J3-4 and J3-3 on UUT. Verify on the scope that V does not drop out. Verify D2 (STAT1) has turned on, charging has resumed and V is powered from the input.
- Page 6 www.ti.com Test Summary demonstrates battery supplement mode because the system load exceeds the available input current. 35. Disconnect the USB source and verify that the AC source takes over in USB mode at the 100-mA charge level. 36. Verify that D4 (USBPG) turns off. 37.
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Page 7: Schematic
www.ti.com Schematic Schematic Figure 2. bq2403x EVM Schematic SLUU207A – October 2004 – Revised January 2007 bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion and Li-Pol Charge Management IC EVM Submit Documentation Feedback... -
Page 8: Physical Layouts
www.ti.com Physical Layouts Physical Layouts This section contains the board layout and assembly drawings for the EVM. Board Layout Figure 3 shows the top assembly view of the EVM. Figure 4 shows the top etch layer of the EVM. Figure 5 shows the board second etch layer of the EVM. - Page 9 www.ti.com Physical Layouts Figure 4. Board Layout – Top Etch Layer SLUU207A – October 2004 – Revised January 2007 bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion and Li-Pol Charge Management IC EVM Submit Documentation Feedback...
- Page 10 www.ti.com Physical Layouts Figure 5. Board Layout – Second Etch Layer bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion SLUU207A – October 2004 – Revised January 2007 and Li-Pol Charge Management IC EVM Submit Documentation Feedback...
- Page 11 www.ti.com Physical Layouts Figure 6. Board Layout – Third Etch Layer SLUU207A – October 2004 – Revised January 2007 bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion and Li-Pol Charge Management IC EVM Submit Documentation Feedback...
- Page 12 www.ti.com Physical Layouts Figure 7. Board Layout – Bottom Etch Layer bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion SLUU207A – October 2004 – Revised January 2007 and Li-Pol Charge Management IC EVM Submit Documentation Feedback...
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Page 13: Bill Of Materials
www.ti.com Bill of Materials Bill of Materials (1) (2) (3) (4) Table 2. Bill of Materials COUNT REFDES DESCRIPTION SIZE PART NUMBER bq24030 bq24032 bq24035 bq24031 -001 -002 -003 -004 C1, C2, C3 Capacitor, ceramic, 10-µF, 6.3-V, X5R, 20% Panasonic ECJ-2FB0J106M C4, C5 Capacitor, ceramic, 10-µF, 25-V, X5R, 20%... - Page 14 www.ti.com References References 1. SLUS618, bq2403x Datasheet bq2403x (bqTiny-III™) 1.5-A Single-Chip Li-Ion SLUU207A – October 2004 – Revised January 2007 and Li-Pol Charge Management IC EVM Submit Documentation Feedback...
- Page 15 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use.
- Page 16 Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2007, Texas Instruments Incorporated EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 0 V to 6.5 V and the output...
- Page 17 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...
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