Microchip | MIC5011YN

The MIC5011YN is the “minimum parts count” member of the Micrel MIC501X driver family. These ICs are designed to drive the gate of an N-channel power MOSFET above the supply rail in high-side power switch applications. The 8-pin MIC5011 is extremely easy to use, requiring only a power FET and nominal supply decoupling to implement either a high- or low-side switch.

The MIC5011 charges a 1 nF load in 60 µs typical with no external components. Faster switching is achieved by adding two 1nF charge pump capacitors. Operation down to 4.75 V allows the MIC5011 to drive standard MOSFETs in 5 V low-side applications by boosting the gate voltage above the logic supply. In addition, multiple paralleled MOSFETs can be driven by a single MIC5011 for ultra-high current applications. Other members of the Micrel driver family include the MIC5012 dual driver and MIC5013 protected 8-pin driver. For new designs, Micrel recommends the pin-compatible MIC5014 MOSFET driver.

Key Features:

• 4.75 V to 32 V operation.
• Less than 1 µA standby current in the “off” state.
• Internal charge pump to drive the gate of an N-channel power FET above supply.
• Available in small outline SOIC packages.
• Internal zener clamp for gate protection.
• Minimum external parts count.
• Can be used to boost drive to low-side power FETs operating on logic supplies.
• 25 µs typical turn-on time with optional external capacitors.
• Implements high- or low-side drivers.

Applications:

• Lamp drivers.
• Relay and solenoid drivers.
• Heater switching.
• Power bus switching.