fs3861 Fortune Semiconductor Corporation, fs3861 Datasheet - Page 10

• Manufacturer Part Number: fs3861
• Description: Intelligent Charger Management Controller
• Manufacturer: Fortune Semiconductor Corporation

FS3861
10. Functional Description
10.1 Typical Charging Scheme
10.1.1 Typical Charging Conditions and Phases
The FS3861 uses flexible control schemes of charger’s current and voltage regulations in conjunction with the
built-in 8-bit RISC-type MCU core running at typical 4 MHz for desired charge sequence controls during its
operations. It is embedded with the constant-current and constant-voltage regulations as well as the additional
facilities of PWM voltages for user-defined intermediate voltage levels used for various applications.
The external sensing resistors together with built-in parameters of the 8-bit MCU enable the device performing
charge cycle operations through selections of small to larger charge current’s amounts primarily for Li+ battery’s
linear mode charge applications, where the pulse-mode charging can be implemented using the internal hardware
to control the charge sequences as implemented by the built-in MCU program code for various charger
applications.
Fig.1 Typical Charge Profile
Fortune Semiconductor Corp.
Rev. 1.0
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