MIC2026/2076 Dual-Channel Power Distribution Switch General Description Features The MIC2026 and MIC2076 are high-side MOSFET 140m maximum on-resistance per channel switches optimized for general-purpose power distribution 2.7V to 5.5V operating range requiring circuit protection. 500mA minimum continuous current per channel The MIC2026/76 are internally current limited and have Shortcircuit protection with thermal shutdown thermal shutdown that protects the device and load. Thermally isolated channels The MIC2076 offers smart thermal shutdown that Fault status flag with 3ms filter eliminates false reduces current consumption in fault modes. When a assertions thermal shutdown fault occurs, the output is latched off Undervoltage lockout until the faulty load is removed. Removing the load or toggling the enable input will reset the device output. Reverse current flow blocking (no body diode) Both devices employ soft-start circuitry that minimizes Circuit breaker mode (MIC2076) inrush current in applications where highly capacitive loads Logic-compatible inputs are employed. Soft-start circuit A fault status output flag is asserted during overcurrent Low quiescent current and thermal shutdown conditions. Transient faults are Pin compatible with MIC2526 internally filtered. UL File E179633 The MIC2026/76 are available in 8-pin DIP or 8-pin SOIC. Applications All support documentation can be found on Micrels web site at www.micrel.com. USB peripherals General purpose power switching ACPI power distribution Notebook PCs PDAs PC card hot swap Typical Application V CC V 2.7V to 5.5V CONT. 10k 10k Logic Controller MIC2026-2 VIN ON/OFF ENA OUTA Load OVERCURRENT FLGAI N 0.1F OVERCURRENT FLGB GND ON/OFF Load ENB OUTB UL Recognized Component Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC2026/2076 Ordering Information Part Number Temperature Enable Package Range Standard Pb-Free (1) MIC2026-1BM MIC2026-1YM Active High 8-Pin SOIC (1) MIC2026-2BM MIC2026-2YM Active Low 8- Pin SOIC MIC2026-1BN Active High 8- Pin DIP 40C to +85C MIC2026-2BN Active Low 8- Pin DIP (1) MIC2076-1BM MIC2076-1YM Active High 8- Pin SOIC (1) MIC2076-2BM MIC2076-2YM Active Low 8- Pin SOIC MIC2076-1BN Active High 8-Pin DIP MIC2076-2BN Active Low 8-Pin DIP Note: 1. RoHS compliant and Halogen free. Pin Configuration ENA 1 8OUTA FLGA 2 7 IN FLGB 3 6 GND ENB 4 5 OUTB 8-Pin SOIC (M) 8-Pin DIP (N) 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. Indicates overcurrent or thermal shutdown conditions. Overcurrent conditions must last longer than tB B in D order to assert FLGA. 3 FLGB Fault Flag B (Output): Active-low, open-drain output. Low indicates overcurrent or thermal shutdown conditions. Overcurrent conditions must last longer than tB B D in order to assert FLGB. 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) M9999-060410-B June 2010 2