This part of IEC 62637 defines a charging interface between small handheld multimedia
devices and power-supply accessories, specifically chargers. Devices, which could be based
on this standard may vary over time, but have to comply with the limited power available.
The interface is a 2 mm barrel type charging interface. This standard does not include the
whole charger nor does it include the internal functions of the device. Chargers and devices
shall follow the applicable EMC and safety standards. The scope of this part of IEC 62637 is
illustrated in Figure 1.