wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 158
wm8352
Manufacturer Part Number
wm8352
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8352.pdf
(335 pages)
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WM8352
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Fast charging consists of two phases:
In the constant current phase, the WM8352 drives a programmable constant current into the battery
through the BATT pin. During this phase, the battery voltage rises monotonically until the battery
reaches the target voltage.
When the battery reaches the target voltage, the charger enters the constant voltage phase, in which
the WM8352 regulates BATT to the target voltage. To achieve this, the WM8352 adjusts the charge
current adaptively. The charge current decreases monotonically over time. Fast charging is disabled
when the current falls to a programmable ‘End of Charge’ threshold level.
Figure 77 A Typical Charge Cycle
PD, June 2009, Rev 4.1
Production Data
158
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