MIC2026 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-lead SOP.
MIC2026 Maximum Ratings
Supply Voltage (VIN) ...................................... 0.3V to +6V
Fault Flag Voltage (VFLG) ..............................................+6V
Fault Flag Current (IFLG) ............................................25mA
Output Voltage (VOUT) .................................................+6V
Output Current (IOUT) ............................ Internally Limited
Enable Input (IEN) ................................ 0.3V to VIN + 3V
Storage Temperature (TS) .................. 65°C to +150 °C
MIC2026 Features
• 140m 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 (MIC2076)
• Logic-compatible inputs
• Soft-start circuit
• Low quiescent current
Pin-compatible with MIC2526
MIC2026 Typical Application
• USB peripherals
• General purpose power switching
• ACPI power distribution
• Notebook PCs
• PDAs
• PC card hot swap
MIC2026 Connection Diagram
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