General Description

The MIC29311 is a 3A, fast response, low-dropout (LDO) voltage regulator. Using Micrel’s proprietary Super βeta PNP™ process, the MIC29311 offers exceptional dropout (600mV at 3A) and low ground current (60mA at 3A). Fast transient response allows it to recover quickly from large load changes while maintaining a steady output. The device can be sent into a “zero-current” off mode when the TTL compatible enable is brought low.

Features

• Fast transient response

• 3A output current over full temperature range

• 600mV dropout voltage at full load

• Low ground current

• 3 total accuracy

• “Zero” off-mode current

• Thermal Shutdown

• Current Limiting

• Reversed battery protection

• Fixed 5.1V Output

Applications

• Self-powered USB hubs

• USB power switching

• High-efficiency linear power supplies

• High-efficiency switching supply post-regulator