MAX1940EEE集成电路（IC）的电源管理-专用规格书PDF中文资料

General Description

The MAX1940 triple current-limited switch with auto-reset supplies a guaranteed 500mA load per channel in accordance with USB specifications. The MAX1940 operates from a 4V to 5.5V input supply and consumes only 60µA of quiescent current when operating and only 3µA in standby. Selectable active-high/active-low control logic and independent shutdown controls for each channel provide additional flexibility. An autoreset feature latches the switch off in the event of a short circuit, saving system power. The switch reactivates upon removal of the shorted condition.

特性 Features

♦ Triple USB Switch in Tiny 16-Pin QSOP Package

♦ Autoreset Feature Saves System Power

♦ Guaranteed 500mA Load Current per Channel

♦ Built-In 20ms Fault-Blanking Circuitry

♦ Active-High/Active-Low Control Logic

♦ Fully Compliant to USB Specifications

♦ 4V to 5.5V Input Voltage Range

♦ Independent Shutdown Control

♦ Independent Fault Indicator Outputs

♦ Thermal-Overload Protection

♦ 3µA Standby Current

Applications

USB Ports

USB Hubs

Notebook Computers

Desktop Computers

PDAs and Palmtop

Computers

Docking Stations