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BQ24004TIN/a29avaiLi-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, One LED
BQ24004PWPRTIN/a3696avaiLi-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, One LED


BQ24004PWPR ,Li-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, One LEDELECTRICAL CHARACTERISTICSover recommended operating junction temperature supply and input voltages ..
BQ24005 ,Li-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, Two LEDFEATURESDESCRIPTION2• Highly Integrated Solution With FET PassThe bq2400x series ICs are advanced L ..
BQ24005PWP ,Li-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, Two LEDmaximum ratings may cause permanent damage to the device. These are stress ratingsonly, and functio ..
BQ24005PWP ,Li-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, Two LEDThese devices have limited built-in ESD protection. The leads should be shorted together or the dev ..
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BQ24004-BQ24004PWPR
Li-Ion Linear (8.2V & 8.4V) Charge Management IC For Two-Cell Apps W/Integrated FET, One LED
bq24004
bq24005
bq24006
www.ti.com
SLUS476F –DECEMBER 2000–REVISED MAY 2012
TWO-CELL Li-ION CHARGE MANAGEMENT IC
FOR PDAs AND INTERNET APPLIANCES
Checkfor Samples: bq24004, bq24005, bq24006
1FEATURES
DESCRIPTION Highly Integrated Solution With FET Pass
The bq2400x series ICs are advanced Li-Ion linearTransistor and Reverse-Blocking Schottky and charge management devices for highly integrated andThermal Protection space-limited applications. They combine high-• Integrated Voltage and Current Regulation accuracy current and voltage regulation; FET pass-With Programmable Charge Current transistor and reverse-blocking Schottky; battery
conditioning, temperature,or input-power monitoring;• High-Accuracy Voltage Regulation (±1%)
charge termination; charge-status indication; and• Ideal for Low-Dropout Linear Charger Designs charge timerina small package.for Two-Cell Li-Ion Packs With Cokeor
Graphite Anodes
The bq2400x measures battery temperature usingan
external thermistor. For safety, the bq2400x inhibits• Upto 1.2-A Continuous Charge Current charge until the battery temperatureis within the• Safety-Charge Timer During Preconditioning user-defined thresholds. Alternatively, the user canand Fast Charge monitor the input voltage to qualify charge. The
bq2400x series then charge the batteryin three• Integrated Cell Conditioning for Reviving
phases: preconditioning, constant current, andDeeply Discharged Cells and Minimizing Heat constant voltage.If the battery voltageis below theDissipation During Initial Stageof Charge internal low-voltage threshold, the bq2400x uses low-• Optional Temperatureor Input-Power current precharge to condition the battery. AMonitoring Before and During Charge preconditioning timer provides additional safety. Various Charge-Status Output Options for Following pre- conditioning, the bq2400x appliesa
Driving Single, Double,or Bicolor LEDsor
constant-charge currentto the battery. An external
sense-resistor sets the magnitudeof the current. TheHost-Processor Interface
constant-current phaseis maintained until the battery• Charge Termination by Minimum Current and reaches the charge-regulation voltage. The bq2400xTime then transitionsto the constant voltage phase. The• Low-Power Sleep Mode user can configure the device for cells with eitherof the voltage over the operating voltage range. timeor minimum the chargeif the internal recharge
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