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BQ24313DSGR Datasheet(PDF) 1 Page - Texas Instruments

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Part # BQ24313DSGR
Description  OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li CHARGER FRONT-END PROTECTION IC
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ24313DSGR Datasheet(HTML) 1 Page - Texas Instruments

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1
FEATURES
APPLICATIONS
DESCRIPTION
AC Adapter
VDC
GND
1 F
m
1
2
7
5
4
6
8
bq24313
bq24315
bq24080
ChargerIC
SYSTEM
IN
OUT
VBAT
FAULT
CE
1 F
m
APPLICATIONSCHEMATIC
bq24313
bq24315
www.ti.com............................................................................................................................................... SLUS817A – MARCH 2008 – REVISED NOVEMBER 2008
OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND
Li+ CHARGER FRONT-END PROTECTION IC
• 5.5V LDO Mode Voltage Regulation
23
• Provides Protection for Three Variables:
• Available in Space-Saving Small 8 Lead 2mm
×2mm SON
Input Overvoltage, with Rapid Response in
< 1
µs
User-Programmable Overcurrent with
• Mobile Phones and Smart Phones
Current Limiting
• PDAs
Battery Overvoltage
• MP3 Players
• 30V Maximum Input Voltage
• Low-Power Handheld Devices
• Supports up to 1.5A Input Current
• Bluetooth™ Headsets
• Robust Against False Triggering Due to
Current Transients
• Thermal Shutdown
• Enable Input
• Status Indication – Fault Condition
The bq24313 and bq24315 are highly integrated circuits designed to provide protection to Li-ion batteries from
failures of the charging circuit. The IC continuously monitors the input voltage, the input current, and the battery
voltage. The output acts as a linear regulator. The output is regulated to VO(REG) for inputs between VO(REG) and
the overvoltage threshold. If an input overvoltage condition occurs, the IC immediately removes power from the
charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the system
current at the threshold value, and if the overcurrent persists, switches the pass element OFF after a blanking
period. Additionally, the IC also monitors its own die temperature and switches off if it exceeds 140°C. The input
overcurrent threshold is user-programmable.
The IC can be controlled by a processor and also provides status information about fault conditions to the host.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
PowerPAD is a trademark of Texas Instruments.
3
Bluetooth is a trademark of Bluetooth SIG, Inc.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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