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L6924U013TR データシート(PDF) 4 Page - STMicroelectronics

部品番号 L6924U013TR
部品情報  USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6924U013TR データシート(HTML) 4 Page - STMicroelectronics

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Device description
L6924U
4/38
1
Device description
The L6924U is a fully monolithic battery charger that safely charges single-cell
Li-Ion/Polymer battery from either USB power source or AC adapter. In USB mode, the
L6924U supports both low power and high power mode. Alternatively the device can charge
from AC wall adapter.
The ideal solution for space-limited portable products is produced in BCD6 technology and
integrates the power MOSFET, reverse blocking diode, sense resistor and thermal
protection into a compact VFQFPN16 package. When an external voltage regulated adapter
or USB port is used, the L6924U works in linear mode, and charges the battery in a
constant current constant voltage (CC/CV) profile. Moreover, when a current-limited adapter
is used, the device can operate in quasi-pulse mode, dramatically reducing the power
dissipation. Regardless of the charging approach, a closed loop thermal control avoids
device overheating. The device has an operating input voltage ranging from 2.5 V to 12 V
and it allows the user to program many parameters, such as fast-charge current, end-of-
charge current threshold, and charge timer. The L6924U offers two open collector outputs
for diagnostic purposes, which can be used to either drive two external LEDs or
communicate with a host microcontroller. Finally, the L6924U also provides other features
like gas gauge function, check for battery presence, and monitoring and protecting the
battery from unsafe thermal conditions.
Figure 2.
Basis application schematic
Figure 1.
Minimum size application board


同様の部品番号 - L6924U013TR

メーカー部品番号データシート部品情報
logo
STMicroelectronics
L6924U013TR STMICROELECTRONICS-L6924U013TR Datasheet
828Kb / 37P
   USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer
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同様の説明 - L6924U013TR

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