EC49021AS/AD

Dual/Single USB Charger Port Controller

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5J21N-Rev.F001

DESCRIPTIONS

The EC49021A are USB dedicated charging port (DCP) controllers. An auto-detect feature monitors USB data line

voltage, and automatically provides the correct electrical signatures on the data lines to charge compliant devices among

the following dedicated charging schemes:

■ Divider 1 DCP, required to apply 2 V and 2.7 V on the D+ and D– Lines respectively.

■ Divider 2 DCP, required to apply 2.7 V and 2 V on the D+ and D– Lines respectively.

■ BC1.2 DCP, required to short the D+ Line to the D– Line

■ Chinese Telecom Standard YD/T 1591-2009 Shorted Mode, required to short the D+ Line to the D– Line.

■ 1.2 V on both D+ and D– Lines.

FEATURE

■ Supports USB DCP Shorting D+ Line to D- Line per USB Battery Charging Specification, Revision 1.2(BC1.2).

■ Supports Shorted Mode (Shorting D+ Line to D- Line) per Chinese Telecommunication Industry Standard YD/T

1591-2009.

■ Supports USB DCP Applying 2.7 V on D+ Line and 2 V on D- line (or USB DCP Applying 2 V on D+ Line and 2.7

V on D– Line).

■ Supports USB DCP Applying 1.2 V on D+ and D– Lines.

■ Automatically Switch D+ and D- Lines Connections for an Attached Device.

■ Dual USB Port Controller, EC49021AD.

Single USB Port Controller, EC49021AS.

■ Operating Range: 4.5 V to 5.5 V.

■ Available in SOT23-6 Package.

APPLICATION

■ Vehicle USB Power Charger

■ AC-DC Adapter with USB Port

■ Other USB charger

ORDERING INFORMATION

EC49021AX XX X

B3：SOT23-6

R：Tape & Reel

S：Single port

D：Dual port