Laptop Chip Intersil ISL6251AHAZ Low Cost Multi-Chemistry [NL1712451] - $4.99 : buy cheap computer & laptop replacement parts & video games accessories, wholesale electronic gadgets at eeshops.net, EESHOPS

Laptop Chip Intersil ISL6251AHAZ Low Cost Multi-Chemistry

$4.99

Model: NL1712451

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Description

Laptop Chip Intersil ISL6251AHAZ Low Cost Multi-Chemistry Battery Charger Controller

Description:

The ISL6251, ISL6251A is a highly integrated battery charger controller for Li-Ion/Li-Ion polymer batteries and NiMH batteries.
High Efficiency is achieved by a synchronous buck topology and the use of a MOSFET, instead of a diode, for selecting power from the adapter or battery.
he low side MOSFET emulates a diode at light loads to improve the light load efficiency and prevent system bus boosting.
The constant output voltage can be selected for 2, 3 and 4 series Li-Ion cells with 0.5% accuracy over temperature.
It can be also programmed between 4.2V+5%/cell and 4.2V-5%/cell to optimize battery capacity. When supplying the load and battery charger simultaneously, the input current limit for the AC adapter is programmable to within 3% accuracy to avoid overloading the AC adapter, and to allow the system to make efficient use of available adapter poer for charging.
It also has a wide range of programmable charging current.
The ISL6251, ISL6251A provides outputs that are used to monitor the current drawn from the AC adapter, and monitor for the presence of an AC adapter. The ISL6251, ISL6251A automatically transitions from regulating current mode to regulating voltage mode.