MIC2026-1YM-TR Dual Channel Power Distribution Switch diode rectifier circuit synchronous

MIC2026-1YM-TR Dual-Channel Power Distribution Switch diode rectifier circuit synchronous rectifier

Features

• 140mΩ maximum on-resistance per channel

• 2.7V to 5.5V operating range

• 500mA minimum continuous current per channel

• Shortcircuit 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 (MIC2076)

• Logic-compatible inputs

• Soft-start circuit

• Low quiescent current

• Pin compatible with MIC2526

• UL File # E179633

Applications

• USB peripherals

• General purpose power switching

• ACPI power distribution

• Notebook PCs

• PDAs

• PC card hot swap

General Description

The MIC2026 and MIC2076 are high-side MOSFET switches optimized for general-purpose power distribution requiring circuit protection.

The MIC2026/76 are internally current limited and have thermal shutdown that protects the device and load. The MIC2076 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 faults are internally filtered. The MIC2026/76 are available in 8-pin DIP or 8-pin SOIC. All support documentation can be found on Micrel’s web site at www.micrel.com.

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