USB battery charger detectors

2 May 2012 Power Electronics / Power Management

Maxim announced the MAX14578E and MAX14578AE, claimed to be the industry’s smallest USB battery charger detectors that are compliant with the USB Battery Charging Specification.

These devices detect USB standard downstream ports (SDPs), USB charging downstream ports (CDPs) or dedicated charger ports (DCPs), in addition to proprietary charger adapters from Apple and Sony. When a charging port is detected, the device will control an external lithium-ion (Li+) battery charger controller to optimise charge time and charging efficiency.

An on-chip LDO provides a 5,3 V output which can be used to power a USB transceiver. In addition, ESD protection on the USB data pins is extended up to ±15 kV (Human Body Model) and ±8 kV IEC 61000-4-2 Contact Discharge. The ICs are available in a 12-bump, 0,4 mm pitch, 1,3 x 1,68 mm WLP package for space-critical applications, and in a 16-pin TQFN package for ease of manufacturing. They operate over the -40°C to +85°C extended temperature range.

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