Product category: Power Supply ICs and Controllers
News Release from: Microchip Technology | Subject: MCP7384x series
Edited by the Electronicstalk Editorial Team on 22 September 2003
Charge managers boost
battery capacity and life
A new family of single- and dual-cell lithium-ion and lithium-polymer charge-management controllers offer an industry leading voltage regulation accuracy of +/-0.5%
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The MCP7384x series combines high-accuracy, constant-voltage/constant-current regulation, cell preconditioning, cell-temperature monitoring, advanced safety timers, automatic charge termination and charge status indication in space-saving MSOP packages. Cell preconditioning supports deeply depleted batteries.
Cell-temperature monitoring measures cell temperature, preventing charging outside the recommended temperature window.
Safety timers allow for time-based charge termination ensuring safety with defective battery cells.
Designers can program the charge current and use an external field effect transistor, making these devices ideal for high capacity battery packs requiring fast charging time.
The temperature range for these battery chargers is -40 to +85C.
The devices automatically power down when the input source is removed minimising the battery drain current.
They also begin a new charge cycle when the battery voltage falls below the recharge threshold, eliminating frequent trickle charge periods.
The devices can withstand voltages as high as 12V from loosely regulated wall adapters, reducing total system cost.
MCP7384x devices are available in 4.1, 4.2, 8.2 and 8.4V preset voltage options in 8- and 10-pin MSOPs.
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