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General Description

The MAX14578E/MAX14578AE are USB charger detectors compliant with USB Battery Charging Revision 1.1. The USB charger-detection circuitry detects USB standard downstream ports (SDPs), USB charging down stream ports (CDPs), or dedicated charger ports (DCPs), and controls an external lithium-ion (Li+) battery charger. The devices implement USB Battery Charging Revision 1.1-compliant detection logic including data contact detection, D+/D- short detection, charging downstream port identification, and optional USB dead-battery charging support. Dead-battery charging support features a 45-minute (max) charge timer and weak battery voltage monitor controlled by I2C communication (MAX14578E only.) The MAX14578AE features an enable (EN) input and an LDO output.

Features

Compliant to USB Battery Charging Revision 1.1

Data Contact Detection for Foolproof Connector Insertion Detection

USB Dead-Battery Charging Support

Charging Downstream Detection

Apple/Sony Charger Detection

Dedicated Charger Detection

China YD/T1591-Compliant Charger Detection

Internal Switches Isolate the USB Transceiver During the Charger Detection Process

VBUS Connection Capable of 28V

Device Status Change Interrupt

Low Supply Current

High-ESD Protection on CD+ and CD-

??? ±15kV Human Body Model

?? ±8kV IEC 61000-4-2 Contact Discharge

Applications

DSC and Camcorder

Media Players

Cell Phones

e-Book Readers

Mobile Internet Devices (MIDs)