BQ24745_14 Datasheet, PDF (30/39 Pages) Texas Instruments – SMBus-Controlled Multi-Chemistry Battery

bq24745
SLUS761D – DECEMBER 2007 – REVISED OCTOBER 2011
REVISION HISTORY
NOTE: Page numbers of previous versions may differ from the current version.
www.ti.com
Changes from Original (December 2007) to Revision A
Page
• Changed The data sheet title From: SMBus-Controlled Multi-Chemistry Battery Charger With Input Current Detect
Comparator To: SMBus-Controlled Multi-Chemistry Battery Charger With Input Current Detect Comparator and
Charge Enable Pin ................................................................................................................................................................ 1
• Deleted Features Bullet: Cells Pin Supports Two to Four Li-Ion Cells ................................................................................. 1
• Deleted Condition above Figure 1: VICM_{er_limit} = 6 A ............................................................................................................ 2
• Added text to the condition above Figure 2: "for ICOUT Input Current comparator" ........................................................... 3
• Changed ICREF text in the PIN FUNCTIONS table From: Input current comparator voltage reference input. Connect
a resistor-divider from VREF to ICREF, and GND to program the reference for the LOPWR comparator To: Input
current comparator voltage reference input. Connect a resistor-divider from VREF to ICREF, and GND to program
the reference for the ICOUT comparator .............................................................................................................................. 4
Changes from Revision A (October 2008) to Revision B
Page
• Deleted "Level 2" from title ................................................................................................................................................... 1
• Deleted "Input Overvoltage Protection (OVP)" Features bullet ............................................................................................ 1
• Changed Feature bullet from "6 V-24 V" to "7 V-24 V" ........................................................................................................ 1
• Changed "10-μ" to "10-μA" Battery Current .......................................................................................................................... 1
• Changed last sentence of first paragraph of DESCRIPTION by deleting "one," from the text string. .................................. 1
• Changed Figure 1 graphic entity ........................................................................................................................................... 2
• Changed Figure 2 graphic entity ........................................................................................................................................... 3
• Changed T_A from "70°C" to "40°C" in the Package Thermal Data table. ............................................................................. 3
• Changed θ_JA from "39°C/W" to "36°C/W" in the Package Thermal Data table. .................................................................... 3
• Changed "ACOUT" to "ICOUT" and deleted "ICREF input" from Pin 2 functional description. ........................................... 4
• Deleted "optional" from Pins 17, 18, 27, and 28 functional description in the Pin Functions table. ..................................... 4
• Added text to Pin 22 functional description. ......................................................................................................................... 4
• Changed Pin 22 functional description from "100-Ω" resistor to "10-Ω" resistor in the Pin Functions table. ....................... 4
• Added "ACOK" specification to first row of Absolute Maximum Ratings table. .................................................................... 5
• Added "SDA" and "SCL" specification to fourth row of Absolute Maximum Ratings table, and changed maximum
voltage from "7 V" to "6 V" .................................................................................................................................................... 5
• Deleted "GND" and "PGND" specification from Absolute Maximum Ratings table .............................................................. 5
• Added "ACOK" specification to Recommended Operating Conditions table ........................................................................ 5
• Added "VDDSMB", "SDA", and "SCL" specifications to Recommended Operating Conditions table .................................. 5
• Changed VFB SHORT (....) COMPARATOR specification parameter text from ""VFB short rising hysteresis" to "VFB
short falling hysteresis" ......................................................................................................................................................... 7
• Changed Functional Block Diagram graphic entity ............................................................................................................. 17
• Changed Detailed Description -- re-write for clarification ................................................................................................... 18
• Changed Figure 33 graphic entity ....................................................................................................................................... 19
• Changed Figure 34 graphic entity legend ........................................................................................................................... 19
• Changed Figure 35 graphic entity legend ........................................................................................................................... 20
• Changed Figure 36 graphic entity ....................................................................................................................................... 27
• Deleted "Q5" from Component List table. ........................................................................................................................... 28
• Added description for C1 and C6 in the Component List table. ......................................................................................... 28
• Changed "R9" to "R19" in Component List ......................................................................................................................... 28
• Added R20 to Component List ............................................................................................................................................ 28
30
Submit Documentation Feedback
Product Folder Link(s) :bq24745
Copyright © 2007–2011, Texas Instruments Incorporated