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MIC2027-1YWM Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2027-1YWM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 17 page MIC2027/2077 Quad USB Power Distribution Switch Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com September 2006 1 M9999-091506 General Description The MIC2027 and MIC2077 are quad high-side MOSFET switches optimized for general-purpose power distribution requiring circuit protection. The MIC2027/77 are internally current limited and have thermal shutdown that protects the device and load. The MIC2077 offers “smart” thermal shutdown that reduces current consumption in fault modes. When a thermal shutdown fault occurs, the output is latched off until the faulty load is removed. Removing the load or toggling the enable input will reset the device output. Both devices employ soft-start circuitry that minimizes inrush current in applications where highly capacitive loads are employed. A fault status output flag is asserted during overcurrent and thermal shutdown conditions. Transient current limit faults are internally filtered. The MIC2027/77 are available in 16-pin narrow (150 mil) and wide (300 mil) SOIC packages. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Features • 150mΩ 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) reduces power consumption • Logic-compatible inputs • Soft-start circuit • Low quiescent current • Pin compatible with MIC2524 and MIC2527 Applications • USB peripherals • General purpose power switching • ACPI power distribution • Notebook PCs • PDAs • PC card hot swap Typical Application ® UL Recognized Component 4-Port Self-Powered Hub |
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