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BQ29410PWR Datasheet(PDF) 1 Page - Texas Instruments

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Part # BQ29410PWR
Description  VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES (2nd-LEVEL PROTECTION)
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ29410PWR Datasheet(HTML) 1 Page - Texas Instruments

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FEATURES
FUNCTION
APPLICATIONS
GND
OUT
VDD
CD
VC4
VC1
VC3
1
2
VC2
3
4
5
6
7
8
DCTPACKAGE
(TOPVIEW)
1
2
3
4
8
7
6
5
VC1
VC2
VC3
GND
OUT
VDD
CD
VC4
PWPACKAGE
(TOPVIEW)
DESCRIPTION
bq29410, bq29411, bq29412, bq29413
bq29414, bq29415, bq29419
SLUS669E – AUGUST 2005 – REVISED MAY 2007
VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Li-Ion BATTERIES
(2nd-LEVEL PROTECTION)
• 2-, 3-, or 4-Cell Secondary Protection
Each cell in a multiple-cell pack is compared to an
internal reference voltage. If one cell reaches an
• Low Power Consumption I
CC < 2 µA
overvoltage
condition,
the
protection
sequence
[VCELL(ALL) < V(PROTECT)]
begins. The bq2941x device starts charging an
• Fixed High Accuracy Overvoltage Protection
external capacitor through the CD pin. When the CD
Threshold
pin voltage reaches 1.2 V, the OUT pin changes
bq29410 = 4.35 V
from a low level to a high level.
bq29411 = 4.40 V
bq29412 = 4.45 V
bq29413 = 4.50 V
bq29414 = 4.55 V
bq29415 = 4.60 V
bq29419 = 4.30 V
• Programmable Delay Time of Detection
• High Power Supply Ripple Rejection
• Stable During Pulse Charge Operation
• 2nd-Level Overvoltage Protection in Li-Ion
Battery Packs in:
Notebook Computers
Portable Instrumentation
Portable Equipment
The bq2941x is a secondary overvoltage protection
IC for 2-, 3-, or 4-cell lithium-ion battery packs that
incorporates a high-accuracy precision overvoltage
detection circuit. It includes a programmable delay
circuit for overvoltage detection time.
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.
UNLESS
OTHERWISE
NOTED
this
document
contains
Copyright © 2005–2007, Texas Instruments Incorporated
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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