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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .

Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales

Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc

Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.

Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc

Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.

release time:2024-04-18 Hits: Popular:AG11 battery
Characteristic parameters and charging circuit of the power management chip bq24040 Chinese information
The bq24040 series of devices are highly integrated lithium-ion battery linear chargers targeted at space-constrained portable applications. The device operates from either the USB port or the AC adapter. High input voltage range input overvoltage protection supports low-cost unregulated adapters.
The bq24040 has a single output power for battery charging. System Load As long as the average system load does not keep the battery fully charged the 10 hour safety timer can be placed in parallel with the battery.
Characteristic parameters charging
1% charging voltage accuracy
10% charging current accuracy
USB maximum input current limit for pin selection (100mA and 500mA)
Programmable charge cutoff point and precharge current limit
High voltage (3.45V) chemical support via bq24045
Protect
30V input level; 6.6V or 7.1V input overvoltage protection
Input voltage dynamic power management
125 degrees Celsius thermal management; 150 degrees Celsius thermal shutdown protection
OUT pin output short circuit protection and ISET pin short circuit protection
Operates over the JEITA range through battery negative temperature coefficient -1/2 fastest charge current when cold, 4.06V when hot, bq24040 and bq24045
Fixed 10-hour safety timer, bq24040 and bq24045
system
Automatic disabling charge termination and timer modes for battery packages without thermistor, bq24040 and bq24045
Status indication, charging/end
Can be packaged in 2*2mmDFN-10
Integrated auto-start function for production line testing, bq24041
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