US2005中文资料FIXED CURRENT LIMIT POWER DISTRIBUTION SWITCH数据手册UTC规格书

描述 Description

UTC US2005 is a low voltage cost-effective high-side power switchwith current limiting function. It is particularly suitable for general purpose power distribution and control in digital televisions (DTV), printers, set top boxes (STB), PCs, PDAs, and other peripheral devices.UTC US2005 contains a charge pump circuitry to drive the internalMOSFET switch and also incorporate such protection circuits: soft-startcircuit protect these devices from being damaged by limiting inrush current during plug-in; thermal shutdown circuit is used to prevent catastrophic switch failure from high-current loads. UVLO is used to ensure that the device remains off unless there is a valid input voltage present. A flag output is designed to indicate fault conditions to the local USB controller. Lower quiescent current as 80μA making this device ideal for portable battery-operated equipment.   UTC US2005 allows momentary high current surges to passunrestricted without sacrificing overall system safety. It also allows output slew rate limiting by an external capacitor.

特性 Features

• Built-in 80mΩ N-MOSFET
• Open-drain fault flag output to Indicate fault conditions
• Input voltage varies from 2.5V to 5.5V
• 80μA low quiescent current
• Current limit values of 0.5A, 0.8A, and 1.2A
• Automatic-on output after fault
• Thermal protection
• Under voltage lock-out (UVLO)