Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

BQ24705 Datasheet(PDF) 20 Page - Texas Instruments

Part # BQ24705
Description  Host-Controlled Multi-Cell Battery Charger
Download  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ24705 Datasheet(HTML) 20 Page - Texas Instruments

Back Button BQ24705_15 Datasheet HTML 16Page - Texas Instruments BQ24705_15 Datasheet HTML 17Page - Texas Instruments BQ24705_15 Datasheet HTML 18Page - Texas Instruments BQ24705_15 Datasheet HTML 19Page - Texas Instruments BQ24705_15 Datasheet HTML 20Page - Texas Instruments BQ24705_15 Datasheet HTML 21Page - Texas Instruments BQ24705_15 Datasheet HTML 22Page - Texas Instruments BQ24705_15 Datasheet HTML 23Page - Texas Instruments BQ24705_15 Datasheet HTML 24Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 20 / 32 page
background image
BATTERY OVERVOLTAGE PROTECTION
CHARGE OVERCURRENT PROTECTION
THERMAL SHUTDOWN PROTECTION
Status Outputs (ACGOOD, DPMDET)
bq24705
SLUS779B – DECEMBER 2007 – REVISED MARCH 2009............................................................................................................................................... www.ti.com
The converter stops switching when BAT voltage goes above 104% of the regulation voltage. The converter will
not allow the high-side FET to turn on until the BAT voltage goes below 102% of the regulation voltage. This
allows one-cycle response to an overvoltage condition, such as when the load is removed or the battery is
disconnected. A 10-mA current sink from BAT to PGND is on only during charge, and allows discharging the
stored output-inductor energy into the output capacitors.
The charger has a secondary overcurrent protection. It monitors the charge current, and prevents the current
from exceeding 145% of regulated charge current. The high-side gate drive turns off when the overcurrent is
detected, and automatically resumes when the current falls below the overcurrent threshold.
The QFN package has low thermal impedance, which provides good thermal conduction from the silicon to the
ambient, to keep junctions temperatures low. As added level of protection, the charger converter turns off and
self-protects whenever the junction temperature exceeds the TSHUT threshold of 155°C. The charger stays off
until the junction temperature falls below 135°C.
Two status outputs are available, and they require external pull up resistors to pull the pins to system digital rail
for a high level.
ACGOOD open-drain output goes low if ACDET is above 2.4 V.
DPMDET open-drain output goes low when the DPM loop is active to reduce the battery charge current (after a
10-ms delay).
20
Submit Documentation Feedback
Copyright © 2007–2009, Texas Instruments Incorporated
Product Folder Link(s) :bq24705
Not Recommended for New Designs


Similar Part No. - BQ24705_15

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
BQ24705 TI1-BQ24705_17 Datasheet
1Mb / 32P
[Old version datasheet]   600-kHz, Host-Controlled Multi-Cell Battery Charger With Input Overvoltage Protection
More results

Similar Description - BQ24705_15

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
BQ24751RHDRG4 TI-BQ24751RHDRG4 Datasheet
1Mb / 38P
[Old version datasheet]   Host-controlled Multi-chemistry Battery Charger
BQ24740 TI1-BQ24740_14 Datasheet
1Mb / 33P
[Old version datasheet]   Host-Controlled Multi-Chemistry Battery Charger
BQ24705 TI1-BQ24705_17 Datasheet
1Mb / 32P
[Old version datasheet]   600-kHz, Host-Controlled Multi-Cell Battery Charger With Input Overvoltage Protection
BQ24705 TI-BQ24705 Datasheet
1Mb / 30P
[Old version datasheet]   Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect
BQ24740 TI-BQ24740 Datasheet
1Mb / 29P
[Old version datasheet]   Host-controlled Multi-chemistry Battery Charger with Low Input Power Detect
BQ24740 TI-BQ24740_07 Datasheet
1Mb / 32P
[Old version datasheet]   Host-controlled Multi-chemistry Battery Charger with Low Input Power Detect
BQ24261 TI1-BQ24261 Datasheet
6Mb / 46P
[Old version datasheet]   3A, 30V, Host-Controlled Single-Input, Single Cell Switchmode Li-Ion Battery Charger
BQ24765 TI1-BQ24765_15 Datasheet
1Mb / 43P
[Old version datasheet]   SMBus-Controlled Multi-Chemistry Battery Charger
BQ24753 TI-BQ24753 Datasheet
1Mb / 38P
[Old version datasheet]   Host-Controlled Multi-Chemistry Battery Charger with Low Iq and System Power Selector
BQ24751B TI1-BQ24751B Datasheet
1Mb / 38P
[Old version datasheet]   Host-Controlled Multi-Chemistry Battery Charger with Low Iq and System Power Selector
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com