BQ29440DRBR ,Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.35V) 8-SON -40 to 85.(3) Large tape and reel quantity is 3,000 units.(4) Small tape and reel quantity is 250 units.THER ..
BQ294582DRVR ,Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries, with 4.225v OVP 6-WSON -40 to 85Features 3 DescriptionThe bq2945xx family of products is a secondary-level1• 2-Series and 3-Series ..
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BQ2954PN ,Li-Ion Switchmode Charge Management ICGeneral Descriptionphases. First a constant-currentphase replenishes approximately➤ Safe charge of ..
BQ2954SN ,Li-Ion Switchmode Charge Management ICGeneral Descriptionphases. First a constant-currentphase replenishes approximately➤ Safe charge of ..
BQ2954SNTR ,Li-Ion Switchmode Charge Management ICBlock DiagramCharge Qualification
BUZ10 ,Trans MOSFET N-CH 50V 23A 3-Pin(3+Tab) TO-220BUZ10®N - CHANNEL 50V - 0.06Ω - 23A TO-220STripFET™ MOSFETTYPE V R IDSS DS(on) DBUZ10 50 V < 0.0 ..
BUZ100 ,N-Channel SIPMOS Power TransistorCharacteristicsDrain- source breakdown voltage V V(BR)DSSV = 0 V, I = 0.25 mA, T = -40 °C 50 - -GS ..
BUZ100S ,SIPMOS Power Transistor (N channel Enhancement mode Avalanche-rated dv/dt rated)FeaturesDrain source voltage 55 VV• N channel DSDrain-Source on-state resistance 0.015R Ω• Enhancem ..
BUZ100S ,SIPMOS Power Transistor (N channel Enhancement mode Avalanche-rated dv/dt rated)CharacteristicsDrain- source breakdown voltage 55 - - VV(BR)DSSV = 0 V, I = 0.25 mAGS D2.1 3 4Gate ..
BUZ100SL ,N-Channel SIPMOS Power TransistorFeaturesDrain source voltage 55 VVDS• N channelDrain-Source on-state resistance 0.012R Ω• Enhanceme ..
BUZ101S ,SIPMOS Power Transistor (N channel Enhancement mode Avalanche-rated d v/d t rated)FeaturesDrain source voltage 55 VV• N channel DSDrain-Source on-state resistance 0.05R Ω• Enhanceme ..
BQ29440DRBR
Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.35V) 8-SON -40 to 85
P0012-02
DRB Package
(Top View) 5 OUT
VDD
VC4
VC1
VC2
VC3
GND
bq29440, bq2944L0
bq29441, bq29442, bq29443, bq29449, bq2944L9
www.ti.com SLUSA15C –JUNE 2010–REVISED NOVEMBER 2010
Voltage Protection for 2-Series, 3-Series, or 4-Series Cell Li-Ion Batteries
(Second-Level Protection)
Checkfor Samples: bq29440, bq2944L0, bq29441, bq29442, bq29443, bq29449, bq2944L9
1FEATURES APPLICATIONS Second-Level Protectionin Li-Ion Battery• 2-Series, 3-Series,or 4-Series Cell Secondary
PacksProtection Notebook Computers• External Capacitor-Controlled Delay Timer Power Tools• Low Power Consumption ICC<2µA Typical – Portable Equipment and Instrumentation[VCELL(ALL)< VPROTECT] High-Accuracy Overvoltage Protection: ±25 withTA= 0°Cto 60°C Fixed Overvoltage Protection Thresholds:
4.30V, 4.35V, 4.40V, 4.45V, 4.50V Small 8L QFN Package
DESCRIPTIONThe bq2944xisa secondary overvoltage protectionIC for 2-series, 3-series,or 4-series cell Li-Ion battery packs
that incorporatesa high-accuracy precision overvoltage detection circuit.
FUNCTIONThe voltageof each cellina battery packis comparedto an internal reference voltage.If any cells reach an
overvoltage condition, the bq2944x device startsa timer that providesa delay proportionalto the capacitanceon
the CD pin. Upon expirationof the internal timer, the OUT pin changes froma low statetoa high state. An
optional latch configurationis available that holds the OUT pinina high state indefinitely after an overvoltage
condition has satisfied the specified delay timer period. The latchis released when the CD pinis shortedto GND.
Not Recommended for New Designs
