MIC2027中文资料Quad USB High-Side 500mA Current Limiting Power Switch数据手册Microchip规格书

描述 Description

The MIC2027 and MIC2077 are quad high-side MOSFET switchesoptimized for general-purpose power distribution requiring circuit protection.The MIC2027/77 are internally current limited and have thermal shutdown thatprotects the device and load. The MIC2077 offers “smart” thermal shutdown thatreduces current consumption in fault modes. When a thermal shutdown faultoccurs, the output is latched off until the faulty load is removed. Removingthe load or toggling the enable input will reset the device output. Bothdevices employ soft-start circuitry that minimizes inrush current inapplications where highly capacitive loads are employed. A fault status outputflag is asserted during overcurrent and thermal shutdown conditions. Transientcurrent limit faults are internally filtered. The MIC2027/77 are available in16-pin narrow (150 mil) and wide (300 mil) SOIC packages.

特性 Features

• 150mO maximum on-resistance per channel
• 2.7V to 5.5V operating range
• 500mA minimum continuous current per channel
• Short-circuit protection with thermal shutdown
• Thermally isolated channels
• Fault status flag with 3ms filter eliminates false assertions
• Undervoltage lockout
• Reverse current flow blocking (no \"body diode\")
• Circuit breaker mode (MIC2077)
• Logic-compatible inputs
• Soft-start circuit
• Low quiescent current
• Pin compatible with MIC2524 and MIC2527
• UL recognized