Bq24040dsqr vson-10 has the lowest price with automatic start function
explain
Bq2404x series devices are highly integrated lithium ion and lithium polymer linear charger devices for portable applications with limited space. The device is powered by USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost, non regulated adapters. The bq2404x has a single power output to charge the battery. If the average system load cannot fully charge the battery during the 10 hour safety timer, the system load can be connected in parallel with the battery.
Battery charging goes through the following three stages: regulation, constant current and constant voltage. In all charging stages, the internal control loop will monitor the IC junction temperature. When it exceeds the internal temperature threshold, it will reduce the charging current.
The charger power level and charging current sensing function are fully integrated. The charger has high-precision current and voltage regulation loop function, charging state display and charging termination function. Both precharge current and termination current thresholds can be programmed by external resistors on bq24040 and bq24045. The fast charging current value can also be programmed through an external resistor.
characteristic
• charging
– charging voltage accuracy is 1%
– 10% charging current accuracy
– pin optional USB 100mA and 500mA maximum input current limit
– programmable termination and precharge thresholds, bq24040 and bq24045
– bq24045 supports high voltage (4.35v) battery chemistry
• protection function
– 30V input rated voltage; With 6.6v or 7V input overvoltage protection
– input voltage dynamic power management
– 125 ° C thermal conditioning; 150 ° C thermal shutdown protection
– out short circuit protection and Iset short circuit detection
– bq24040 and bq24045 can operate within the range of JEITA through the fast charging current of battery ntc-1 / 2 at low temperature and the voltage of 4.06v at high temperature
– fixed 10 hour safety timer, bq24040 and bq24045
• system
– automatic termination and timer disable mode (TTDM), bq2040 and bq24045 for missing battery pack with thermistor
– status indication
-Charging / completion
– small 2mm x 2mm2 flat leadless (DFN) - 10 package
– integrated auto start function for production line test, bq24041
Scope of application
• smart phones
• handheld computer (PDA)
• MP3 player
• low power handheld devices
Bq2404x series devices are highly integrated lithium ion and lithium polymer linear charger devices for portable applications with limited space. The device is powered by USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost, non regulated adapters. The bq2404x has a single power output to charge the battery. If the average system load cannot fully charge the battery during the 10 hour safety timer, the system load can be connected in parallel with the battery.
Battery charging goes through the following three stages: regulation, constant current and constant voltage. In all charging stages, the internal control loop will monitor the IC junction temperature. When it exceeds the internal temperature threshold, it will reduce the charging current.
The charger power level and charging current sensing function are fully integrated. The charger has high-precision current and voltage regulation loop function, charging state display and charging termination function. Both precharge current and termination current thresholds can be programmed by external resistors on bq24040 and bq24045. The fast charging current value can also be programmed through an external resistor.
characteristic
• charging
– charging voltage accuracy is 1%
– 10% charging current accuracy
– pin optional USB 100mA and 500mA maximum input current limit
– programmable termination and precharge thresholds, bq24040 and bq24045
– bq24045 supports high voltage (4.35v) battery chemistry
• protection function
– 30V input rated voltage; With 6.6v or 7V input overvoltage protection
– input voltage dynamic power management
– 125 ° C thermal conditioning; 150 ° C thermal shutdown protection
– out short circuit protection and Iset short circuit detection
– bq24040 and bq24045 can operate within the range of JEITA through the fast charging current of battery ntc-1 / 2 at low temperature and the voltage of 4.06v at high temperature
– fixed 10 hour safety timer, bq24040 and bq24045
• system
– automatic termination and timer disable mode (TTDM), bq2040 and bq24045 for missing battery pack with thermistor
– status indication
-Charging / completion
– small 2mm x 2mm2 flat leadless (DFN) - 10 package
– integrated auto start function for production line test, bq24041
Scope of application
• smart phones
• handheld computer (PDA)
• MP3 player
• low power handheld devices