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AS3525 Datasheet(PDF) 152 Page - ams AG

Part # AS3525
Description  Advanced Audio Processor System
PDF  194 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3525 Datasheet(HTML) 152 Page - ams AG

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AS3525-A/-B C22O22
Data Sheet, Confidential
© 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
Revision 1.13
152
- 194
7.4.15
Charger
7.4.15.1 General
This block can be used to charge a 4V Li-Io accumulator. It supports constant current and constant voltage charging modes with adjustable
charging currents (50 to 400mA) and maximum charging voltage (3.9 to 4.25V).
Figure 57 Charger States
7.4.15.2 Trickle Charge
If the battery voltage is below 3V, the charger goes automatically in trickle charge mode with 50mA charging current and 3.9V endpoint voltage. In
this mode charging current and voltage are not precise, but provide a charger function also for deep discharged batteries. The temperature
supervision is not enabled in trickle charge mode.
7.4.15.3 Temperature Supervision
This charger block also features a 15uA supply for an external 100k NTC resistor to measure the battery temperature while charging. If the
temperature is too high, an interrupt can be generated.



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