MIC2076A-2YM Microchip

MIC2026A/2076A Dual-Channel Power Distribution Switch General Description Features 100m typical R at 5.0V The MIC2026A and MIC2076A are high-side MOSFET DS(ON) switches optimized for general-purpose power distribution 140m maximum R at 5.0V DS(ON) requiring circuit protection. The MIC2026A is particularly 2.7 V to 5.5 V operating range well suited for USB applications. 500mA minimum continuous current per channel The MIC2026A/2076A are internally current limited and Short circuit protection with thermal shutdown have thermal shutdown that protects the device and load. Thermally isolated channels The MIC2076A offers smart shutdown that reduces Soft-start circuit current consumption in fault modes. When the MIC2076A goes into thermal shutdown due to current limiting, the Fault status flag with 3ms filter eliminates false output is latched off until the switch is reset. The assertions MIC2076A can be reset by removing the load, toggling the UVLO (Undervoltage lockout) enable input, or cycling VIN. Reverse current flow blocking (no body diode) Both devices employ soft-start circuitry that minimizes Circuit breaker mode (MIC2076A) inrush current in applications where highly capacitive loads Pin compatible with the MIC2026/2076 are employed. Logic-compatible inputs A fault status output flag is asserted during overcurrent or Low quiescent current thermal shutdown conditions. Transient faults are internally filtered. Applications The MIC2026A/2076A are available in an 8-pin SOIC USB peripherals package. General purpose power switching All support documentation can be found on Micrels web site at www.micrel.com. ACPI power distribution Notebook PCs PDAs PC card hot swap Typical Application Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC2026A/2076A Ordering Information Part Number Enable Temperature Range Package Lead Finish MIC2026A-1YM Active High 40 to +85C 8- Pin SOIC Pb-Free MIC2026A-2YM Active Low 40 to +85C 8- Pin SOIC Pb-Free MIC2076A-1YM Active High 40 to +85C 8- Pin SOIC Pb-Free MIC2076A-2YM Active Low 40 to +85C 8- Pin SOIC Pb-Free Pin Configuration ENA 1 8OUTA FLGA 2 7 IN FLGB 3 6 GND ENB 4 5 OUTB 8-Pin SOIC (M) Pin Description Pin Number Pin Name Pin Function 1 ENA Switch A Enable (Input): Logic-compatible, enable input. Active high (-1) or active low (-2). 2 FLGA Fault Flag A (Output): Active-low, open-drain output. A logic LOW state Indicates overcurrent or thermal shutdown conditions. Overcurrent conditions must last longer than tB B D in order to assert FLGA. The FLGA pin can be left floating however, fault reporting information will be lost. 3 FLGB Fault Flag B (Output): Active-low, open-drain output. A logic LOW state indicates overcurrent or thermal shutdown conditions. Overcurrent conditions must last longer than tB B D in order to assert FLGB. The FLGB pin can be left floating however, fault reporting information will be lost. 4 ENB Switch B Enable (Input): Logic-compatible enable input. Active-high (-1) or active-low (-2). 5 OUTB Switch B (Output). 6 GND Ground. 7 IN Input: Switch and logic supply input. 8 OUTA Switch A (Output). M9999-072309-B July 2009 2 (408) 955-1690