Features: · Highly Integrated Solution With FET Pass Transistor and Reverse-Blocking Schottky and Thermal Protection· Integrated Voltage and Current Regulation With Programmable Charge Current· High-Accuracy Voltage Regulation (±1%)· Ideal for Low-Dropout Linear Charger Designs for Single-Cell Li-...
bq24001: Features: · Highly Integrated Solution With FET Pass Transistor and Reverse-Blocking Schottky and Thermal Protection· Integrated Voltage and Current Regulation With Programmable Charge Current· High...
SeekIC Buyer Protection PLUS - newly updated for 2013!
268 Transactions
All payment methods are secure and covered by SeekIC Buyer Protection PLUS.
bq24001 bq24002 bq24003 | |
Supply voltage (Vcc with respect to GND) |
13.5V |
Input voltage (IN, ISNS, EN, APG/THERM/CR/STAT1/STAT2, VSENSE, TMR SEL, VSEL) (all with respect to GND) |
13.5V |
Output current (OUT pins) |
2A |
Output sink/source current (STAT1 and STAT2) |
10mA |
Operating free-air temperature range, TA |
40°C to 70°C |
Storage temperature range, Tstg |
65°C to 150°C |
Junction temperature range, TJ |
40°C to 125°C |
Lead temperature (Soldering, 10 sec) |
300°C |
The bq2400x series ICs are advanced Li-Ion linear charge management devices for highly integrated and space-limited applications. They combine highaccuracy current and voltage regulation; FET passtransistor and reverse-blocking Schottky; battery conditioning, temperature, or input-power monitoring;charge termination; charge-status indication; and charge timer in a small package.
The bq2400x measures battery temperature using an external thermistor. For safety reasons, the bq2400x inhibits charge until the battery temperature is within the user-defined thresholds. Alternatively, the user can monitor the input voltage to qualify charge. The bq2400x series then charge the battery in three phases: preconditioning, constant current, and constant voltage. If the battery voltage of bq24001 is below the internal low-voltage threshold, the bq2400x uses low-current precharge to condition the battery. A preconditioning timer is provided for additional safety. Following preconditioning,the bq2400x applies a constant-charge current to the battery. An external sense-resistor sets the magnitude of the current. The constant-current phase is maintained until the battery reaches the charge-regulation voltage. The bq2400x then transitions to the constant voltage phase. The user can configure the device for cells with either coke or graphite anodes. The accuracy of the voltage regulation is better than ±1% over the operating junction temperature and supply voltage range.
Charge of bq24001 is terminated by maximum time or minimum taper current detection.
The bq2400x automatically restarts the charge if the battery voltage falls below an internal recharge threshold.