MAX712CPE+ DIP-16 Snabbladdare NiCd/NiMH

Intelligent laddkrets för NiCd- och NiMH-batterier. Kretsen kan ladda upp till 16 batterier i serie och kan övervaka spänning, temperatur och strömuttag.

The MAX712 fast-charge Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCd) batteries from a DC source at least 1.5V higher than the maximum battery voltage. 1 to 16 series cells can be charged at rates up to 4C. A voltage-slope detecting analog-to-digital converter, timer, and temperature window comparator determine charge completion. The MAX712 are powered by the DC source via an on-board +5V shunt regulator. They draw a maximum of 5uA from the battery when not charging. A low-side current-sense resistor allows the battery charge current to be regulated while still supplying power to the battery’s load.

Features

* Fast-Charge NiMH or NiCd Batteries
* Voltage Slope, Temperature, and Timer Fast-Charge Cutoff
* Charge 1 to 16 Series Cells
* Supply Battery’s Load While Charging (Linear Mode)
* Fast Charge from C/4 to 4C Rate
* C/16 Trickle-Charge Rate
* Automatically Switch from Fast to Trickle Charge
* Linear Mode Power Control
* 5uA (max) Drain on Battery when Not Charging
* 5V Shunt Regulator Powers External Logic

Application

* Battery-Powered Equipment
– Laptop, Notebook, and Palmtop Computers
– Handy-Terminals
– Cellular Phones
* Portable Consumer Products
– Portable Stereos
– Cordless Phone