Texas Instruments bq2404 series User Manual Download Page 7

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Schematic, Physical Layouts and Bill of Materials

5.2

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

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Summary of Contents for bq2404 series

Page 1: ...on the ISET2 pin programs the charge current using the ISET resistor Contents 1 Introduction 2 2 Considerations With Evaluating the bq2404x 2 3 Performance Specification Summary 2 4 Test Procedure Su...

Page 2: ...age The ISET current control loop sets the maximum charge current This maximum programmed current level can be further reduced by entering a USB mode selected by the ISET2 pin The ASO output is depend...

Page 3: ...For all power connections use short twisted pair wires of appropriate gauge wire for the amount of the current can handle 3 A 2 Set PS1 for 5 V 2 A current limit and then turn off supply 3 Connect the...

Page 4: ...r Setup JMP1 Installed JMP2 Installed JMP3 ISET2 and GND shorted JMP4 Installed JMP5 Installed 4 4 ISET PRETERM and TS Setup 4 4 1 TS Use the VM3 to measure the Resistance across GND and TP9 Adjust R1...

Page 5: ...D 15 Adjust R11 until VM3 reads 0 9 V 50 mV 16 Measure on A 2 ICHRG 270 mA 50 mA 17 Adjust R11 until VM3 reads 1 3 V 50 mV 18 Measure on A 2 ICHRG 0 mA 20 mA 19 Measure on A 1 IIN 0 mA 50 mA 20 Adjust...

Page 6: ...com 5 Schematic Physical Layouts and Bill of Materials 5 1 Schematic Figure 3 bq2404x EVM Board Schematic 6 1 A Single Input Single Cell Li Ion Battery Charger SLUUA77 January 2013 Submit Documentatio...

Page 7: ...Materials 5 2 Physical Layouts Figure 4 bq2404x EVM Assembly Layer Figure 5 bq2404x EVM Top Layer 7 SLUUA77 January 2013 1 A Single Input Single Cell Li Ion Battery Charger Submit Documentation Feedb...

Page 8: ...outs and Bill of Materials www ti com Figure 6 bq2404x EVM Bottom Layer 8 1 A Single Input Single Cell Li Ion Battery Charger SLUUA77 January 2013 Submit Documentation Feedback Copyright 2013 Texas In...

Page 9: ...istor Chip 1 16W 1 0603 Std Std 1 1 1 R2 10k Potentiometer 1 4 in Cermet 12 Turn Top Adjust 0 25x0 17 3266W 1 103LF Bourns 1 0 1 R4 10k Potentiometer 1 4 in Cermet 12 Turn Top Adjust 0 25x0 17 3266W 1...

Page 10: ...et 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 10 1 A Single Input Single...

Page 11: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Page 12: ...na type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved...

Page 13: ...ct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulations C...

Page 14: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Page 15: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...