2.2 Battery Charger Detect

The CP2102N Battery Charger Detect notifies an external battery charger the amount of current available from the USB interface.

The figure below shows an example connection diagram for external battery charging circuitry. If using an external battery charging IC,

consult the data sheet for more information about the specific recommended connection diagrams.

CP2102N Device

D+

GND

VREGIN

D-

USB

Connector

VBUS

D+

Signal GND

D-

VBUS

CHR1 (1.5 A)

CHR0 (500 mA)

CHREN (100 mA)

External

Battery

Charging IC

SETI

CEN

SP0503BAHT or

equivalent USB ESD

protection diodes

(Recommended)

Figure 2.4. Battery Charging Connection Diagram

CP2102N Data Sheet

Typical Connection Diagrams

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