Microchip | MIC44F19YMME

The MIC44F19YMME, MIC44F18 and MIC44F20 are high-speed single MOSFET drivers capable of sinking and sourcing 6 A for driving capacitive loads. With delay times of less than 15 ns and rise times into a 1000 pF load of 10 ns, these MOSFET drivers are ideal for driving large gate charge MOSFETs in power supply applications. The MIC44F18 is a non-inverting driver, the MIC44F19 is an inverting driver suited for driving P-Channel MOSFETs and the MIC44F20 is an inverting driver for N-Channel MOSFETs.

Fabricated using Micrel’s proprietary BiCMOS/DMOS process for low power consumption and high efficiency, the MIC44F18/19/20 translates TTL or CMOS input logic levels to output voltage levels that swing within 25 mV of the positive supply or ground. Comparable bipolar devices are capable of swinging only to within 1 V of the supply. The input supply voltage range of the MIC44F18/19/20 is 4.5 V to 13.2 V, making the devices suitable for driving MOSFETs in a wide range of power applications. Other features include an enable function, latch-up protection, and a programmable UVLO function. The MIC44F18/19/20 has a junction temperature range of –40 °C to +125 °C with exposed pad ePAD MSOP-8 and 2X2 MLF™-8 package options.

Key Features:

• 4.5 V to 13.2 V input operating range.
• 6 A peak output current.
• High accuracy ±5% enable input threshold.
• High speed switching capability.
• 10 ns rise time in 1000 pF load.
• <15 ns propagation delay time.
• Flexible UVLO function.
• 4.2 V internally set UVLO.
• Programmable with external resistors.
• Latch-up protection to >500mA reverse current on the output pin.
• Enable function.
• Thermally enhanced ePAD MSOP-8 package option.
• Miniature 2 mm x2 mm MLF™-8 package option.
• Pb-free packaging.

Applications:

• Synchronous switch-mode power supplies.
• Secondary side synchronous rectification.