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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. Persons handling the
product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are
not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations,
including product safety and environmental measures typically found in end products that incorporate such semiconductor
components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding
electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the
technical requirements of these directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30
days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY
SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all
claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to
take any and all appropriate precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive.

TI assumes no liability for applications assistance, customer product design, software performance, or infringement of
patents or services described herein.

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the
product. This notice contains important safety information about temperatures and voltages. For additional information on TI’s
environmental and/or safety programs, please contact the TI application engineer or visit

www.ti.com/esh

.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or
combination in which such TI products or services might be or are used.

FCC Warning

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. It generates, uses, and
can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15
of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this
equipment in other environments may cause interference with radio communications, in which case the user at his own expense
will be required to take whatever measures may be required to correct this interference.

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 voltage range of 0 V to 6.5 V .

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are
questions concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the
EVM. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load
specification, please contact a TI field representative.

During normal operation, some circuit components may have case temperatures greater than 85°C. The EVM is designed to
operate properly with certain components above 60°C as long as the input and output ranges are maintained. These components
include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of
devices can be identified using the EVM schematic located in the 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 © 2010, Texas Instruments Incorporated

Summary of Contents for bq24072RGTR

Page 1: ...an be interfaced with the system and host via the connectors and headers Contents 1 Introduction 2 2 Considerations When Testing and Using bq24072 3 4 5 9 T and bq24230 2 ICs 2 3 Performance Specifica...

Page 2: ...and using the bq2403x ICs The bq24072 3 4 5 9 T series targets current above a nominal 500 mA 350 mA and the difference are listed in Table 1 Table 1 Ordering Information Optional Part Number VOVP VB...

Page 3: ...ge Vin 4 75 V to 5 5 V Too low of input voltage less than the OUT voltage plus the dropout voltage results in degraded performance Excessive input voltage 5 5 V results in excess power dissipation and...

Page 4: ...s in fast charge mode If the IC is in fast charge skip step 7 5 Verify DMM 3 IBAT is 9 mV or 0 09 A 6 Verify that VOUT for bq24072 is 200 mV above the battery voltage or a minimum of 3 4 Vdc For bq240...

Page 5: ...the BAT FET turns off and allows no charging or discharging of the battery 18 Adjust the R16 TS Pot up or down until the TS threshold is reached Verify that the charging current is disabled Return the...

Page 6: ...1 W Fast Charge CC t Time 1 ms div Voltage Reg Termination Test Summary www ti com Figure 2 Modes of Operation Tested in Steps 11 Through 13 Figure 3 Charger Profile With EN1 VSS and EN2 HI Programme...

Page 7: ...igh Then Low Disables Charge 5 Schematic The bq24072 3 4 5 9 T and bq24230 2 EVM schematic appears on the last page of this document 7 SLVU274C November 2008 Revised May 2010 bq24072 3 4 5 9 T and bq2...

Page 8: ...5 shows the top assembly view of the EVM Figure 6 shows the top etch layer of the EVM and Figure 7 shows the bottom etch layer Figure 5 Top Assembly View 8 bq24072 3 4 5 9 T and bq24230 2 1 5 A Single...

Page 9: ...Figure 6 Board Layout Top Etch Layer 9 SLVU274C November 2008 Revised May 2010 bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM Copyright 2008 2010 Tex...

Page 10: ...igure 7 Board Layout Bottom Etch Layer 10 bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer SLVU274C November 2008 Revised May 2010 Charge Management IC EVM Copyright 2008 2010 T...

Page 11: ...r Chip 1 16W 1 0603 Std Std 2 2 2 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 1 0 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R23 1...

Page 12: ...td 1 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 1 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 0...

Page 13: ...Std Std 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 1 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 1 R2...

Page 14: ...sistor Chip 1 16 W 1 0603 Std Std 0 1 R7 100k Resistor Chip 1 16 W 1 0603 Std Std 1 0 R7 0 Resistor Chip 1 16 W 1 0603 Std Std 1 1 R19 0 Resistor Chip 1 16 W 1 0603 Std Std 1 1 R8 5k Potentiometer 1 4...

Page 15: ......

Page 16: ...duct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application enginee...

Page 17: ...h statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury...

Page 18: ...401 Building No 5 JiuGe Business Center Lane 2301 Yishan Rd Minhang District Shanghai China Sales Direct 86 21 6401 6692 Email amall ameya360 com QQ 800077892 Skype ameyasales1 ameyasales2 Customer Se...

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