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Texas Instruments bqSWITCHER bq241 Series User Manual
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Texas Instruments bqSWITCHER bq241 Series User Manual

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User's Guide
Using the bq241xx (bqSWITCHERE)
User's Guide

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Summary of Contents for Texas Instruments bqSWITCHER bq241 Series

  • Page 1 User’s Guide Using the bq241xx (bqSWITCHERE) User’s Guide...
  • Page 2 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods.
  • Page 3 EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2004, Texas Instruments Incorporated...

  • Page 4: Table Of Contents

    SLUU200 − July 2004 Using the bq241xx (bqSWITCHERE) Portable Power Contents Introduction ............... . . Test Summary .

  • Page 5: Test Summary

    SLUU200 − July 2004 Performance Specification Summary This section summarizes the performance specifications of the EVM. Table 1 gives the performance specifications of the EVM. The TS pin has been disabled, for easier charging evaluation, by fixing its voltage to a set value. See EVM schematic and data sheet for information on how to change R10 and R11 values to use with an external thermistor Table 1.

  • Page 6: Schematic

    SLUU200 − July 2004 Table 2. I/O and Jumper Connections (Factory Jumper Selections are shown in BOLD): ASSEMBLY −001 −002 −003 −004 −005 bq24105 (1) bq24113 (2) bq24115 (1) bq24103 (2) Device bq24100 V REG +0.8 to 16 (1) V REG +0.8 to 16 (1) 5 to 16 (2) DC+/DC−:Input voltage range (V) 5 to 16...
  • Page 7 SLUU200 − July 2004 Figure 1. bq241xxEVM Top Layer Using the bq241xx (bqSWITCHERE)

  • Page 8: Physical Layouts

    SLUU200 − July 2004 Physical Layouts This chapter contains the board layout and assembly drawings for the EVM. Board Layout Figure 2 shows the top assembly of the EVM. Figure 3 shows the top silk screen. The bq24103 may also be evaluated on this evaluation board.
  • Page 9 SLUU200 − July 2004 Figure 3. bq241xxEVM Top Silk Screen Figure 4. bq241xx Top Layer Using the bq241xx (bqSWITCHERE)
  • Page 10 SLUU200 − July 2004 Figure 5. bq241xxEVM Top Asembly Using the bq241xx (bqSWITCHERE)

  • Page 11: List Of Materials

    SLUU200 − July 2004 List of Materials Tables 3 through 7 list the components used in this design. With minor component adjustments this design could be modified to meet a wide range of applications. Table 3. bq24100EVM−001 List of Materials REFERENCE DESCRIPTION SIZE...
  • Page 12 SLUU200 − July 2004 Table 4. bq24105EVM−002 List of Materials REFERENCE DESCRIPTION SIZE PART NUMBER DESIGNATOR Capacitor, ceramic, 10 µF, 25 V, X5R, 20% C1, C2, C4 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 10 µF, 25 V, X5R, 20% 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 0.1 µF, 16 V, X7R, 10% Panasonic...
  • Page 13 SLUU200 − July 2004 Table 5. bq24113EVM−003 List of Materials REFERENCE DESCRIPTION SIZE PART NUMBER DESIGNATOR Capacitor, ceramic, 10 µF, 25 V, X5R, 20% C1, C2, C4 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 10 µF, 25 V, X5R, 20% 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 0.1 µF, 16 V, X7R, 10% Panasonic...
  • Page 14 SLUU200 − July 2004 Table 6. bq24115EVM−004 List of Materials REFERENCE DESCRIPTION SIZE PART NUMBER DESIGNATOR Capacitor, ceramic, 10 µF, 25 V, X5R, 20% C1, C2, C4 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 10 µF, 25 V, X5R, 20% 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 0.1 µF, 16 V, X7R, 10% Panasonic...

  • Page 15: References

    SLUU200 − July 2004 Table 7. bq24103EVM−005 List of Materials REFERENCE DESCRIPTION SIZE PART NUMBER DESIGNATOR Capacitor, ceramic, 10 µF, 25 V, X5R, 20% C1, C2, C4 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 10 µF, 25 V, X5R, 20% 1206 Panasonic ECJ−3YB1E106M Capacitor, ceramic, 0.1 µF, 16 V, X7R, 10% Panasonic...
  • Page 16 IMPORTANT NOTICE FOR TI REFERENCE DESIGNS Texas Instruments Incorporated ("TI") reference designs are solely intended to assist designers (“Buyers”) who are developing systems that incorporate TI semiconductor products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible for using its independent analysis, evaluation and judgment in designing Buyer’s systems and products.

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