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朱先生 
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DESCRIPTION
The BL2514A is USB dedicated charging port (DCP) controllers. Applications include
vehicle power charger, wall adapters with USB DCP and other USB chargers. The
BL2514A controller has the auto-detect feature that monitors the D+ and D– line
voltages of the USB connector, providing the correct electrical signatures on the DP
and DM pins for the correct detections of compliant portable devices to fast charge.
These portable devices include smart phones, 5-V tablets and personal media
players.
The BL2514A support five of the most common protocols:
Divider 3 (DCP Applying 2.7V on D+ Line and 2.7V on D– Line)
USB Battery Charging Specification, Revision 1.2 (BC1.2)
Chinese Telecommunications Industry Standard YD/T 1591-2009
1.2V on both D+ and D– lines
FEATURES
In accordance with USB Battery Charging Specification, Revision 1.2 (BC1.2),
support USB DCP D+ line shorted to D- line.
In accordance with Chinese Telecommunications Industry Standard YD/T
1591-2009, support Short mode. ( support D+ line shorted to D- line)
Support DCP applying 2.7 V on D+ Line and 2.7 V on D– Line
Support DCP applying 1.2V to the D+ Line and 1.2V to the D– Line
Automatic switching D+ Line and D- Line for connected devices.
询价
