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MAX14550E USB主机充电器识别模拟开关

2009-08-26 00:00:00

MAX14550E USB主机充电器识别模拟开关 概述 The MAX14550E is a USB Hi-Speed analog switch with a USB host charger (dedicated charger) identification circuit. The MAX14550E supports both the USB Battery Charging Specification Revision 1.0 and a set resistor bias for Apple®-compliant devices.

The MAX14550E features a high-performance Hi-Speed USB switch with low 4pF (typ) on-capacitance and low 4Ω (typ) on-resistance. In addition, the MAX14550E features two digital inputs (CB0 and CB1) to switch between pass-through and charger modes. The USB host charger identification circuit allows a host USB port to support USB chargers with shorted D+/D- detection and to provide support for Apple-compliant devices using a resistor bias. When an Apple-compliant device is attached to the port, the MAX14550E provides the voltage from the external divider. If a USB Revision 1.0-compliant device is attached, the MAX14550E connects a short across DP and DM to allow correct charger detection. The MAX14550E autodetection circuit can be disabled and either a DP/DM short or resistor network is chosen as the default.

The MAX14550E has enhanced high electrostatic discharge (ESD) protection on the DP and DM inputs up to Q15kV Human Body Model (HBM).

The MAX14550E is available in a 10-pin (3mm x 3mm), TDFN package and is specified over the -40°C to +85°C extended temperature range. 关键特性

USB 2.0 Hi-Speed Switching

Low 4.0pF On-Capacitance

Low 4.0Ω On-Resistance

Ultra-Low 0.1Ω On-Resistance Flatness

+2.8V to +5.5V Supply Range

Ultra-Low 7µA Supply Current

Automatic USB Charger Identification Circuit

Optional External Resistor-Divider with Auto Selection

±15kV High ESD HBM Protection on DP/DM

3mm x 3mm, 10-Pin, TDFN Package

应用/使用

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