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References

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 customer 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. - SSZZ017A -
February 2006

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

.

12

bq24070 1.5-A Single-Chip Li-Ion and Li-Pol Charge Management IC EVM

SLUU248 – May 2006

Submit Documentation Feedback

Summary of Contents for bq24070

Page 1: ...er supply The charger is programmed from the factory to deliver 1 A of charging current Contents 1 Introduction 2 2 Considerations When Testing and Using bq24070 ICs 2 3 Performance Specification Summ...

Page 2: ...sconnected but the internal battery FET connects the battery to VOUT There are two types of OUT pin short circuit one associated with the input IN pin VOUT 1 V and the other associated with the BAT pi...

Page 3: ...1 W VBAT IBAT VIN VLDO ILDO 1 The HPA180 bq24070 thermal design is optimized 8 vias 0 031 inch PWB 2 oz copper to give JA 27 C W This section covers the setup and tests performed in evaluating the EVM...

Page 4: ...om the input 18 Disconnect the 5 25 VDC input supply from the UUT IN input Verify on the scope that VOUT does not drop out Verify VOUT is within 50 mV of VBAT and D2 STAT1 and D1 PG LEDs turn off This...

Page 5: ...at the charging terminates when the battery current tapers to C 10 or 100 mA 1 A 10 programmed charge current divided by 10 Verify D2 STAT1 turns off High and D3 STAT2 turns on Low 28 If a load is app...

Page 6: ...www ti com 5 Schematic S0200 01 Schematic Figure 2 bq24070 EVM Schematic bq24070 1 5 A Single Chip Li Ion and Li Pol Charge Management IC EVM 6 SLUU248 May 2006 Submit Documentation Feedback...

Page 7: ...op assembly view of the EVM Figure 5 shows the top etch layer of the EVM Figure 6 shows the board second etch layer of the EVM Figure 7 shows the board third etch layer of the EVM Figure 8 shows the b...

Page 8: ...30 1 79 K003 2 30 1 79 Physical Layouts Figure 4 Top Silkscreen Figure 5 Board Layout Top Etch Layer 8 bq24070 1 5 A Single Chip Li Ion and Li Pol Charge Management IC EVM SLUU248 May 2006 Submit Docu...

Page 9: ...005 2 30 1 79 Physical Layouts Figure 6 Board Layout Second Etch Layer Figure 7 Board Layout Third Etch Layer SLUU248 May 2006 bq24070 1 5 A Single Chip Li Ion and Li Pol Charge Management IC EVM 9 Su...

Page 10: ...ww ti com K006 2 30 1 79 Physical Layouts Figure 8 Board Layout Bottom Etch Layer bq24070 1 5 A Single Chip Li Ion and Li Pol Charge Management IC EVM 10 SLUU248 May 2006 Submit Documentation Feedback...

Page 11: ...6 1 1 k Resistor chip 1 k 1 10W 1 0805 Std Std R7 0 1 k Resistor chip 1 k 1 10W 1 0805 Std Std R9 1 10 k Resistor chip 10 k 1 16W 1 0603 Std Std R10 1 0 Resistor chip 0 1 16 W 1 0603 Std Std R11 1 22...

Page 12: ...y 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...

Page 13: ...nd 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 p...

Page 14: ...iness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product wou...

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