Microchip | MIC4223YM

The MIC4223YM/MIC4224/MIC4225 are a family of a dual 4 A, High-Speed, Low-side MOSFET drivers with logic-level driver enables. The devices are fabricated on Micrel’s Bipolar/CMOS/DMOS (BCD) process and operate from a 4.5 V to 18 V supply voltage. The devices parallel Bipolar and CMOS output stage architecture provides high-current throughout the MOSFETs Miller Region allowing the driver to sink and source 4 A of peak current from a 12 V supply and quickly charge and discharge a 2000 pF load capacitance in under 15 ns, while allowing the outputs to swing within 0.3 V of V DD and 0.16 V of ground.

The MIC4223/MIC4224/MIC4225 driver and enable inputs feature TTL and CMOS logic-level thresholds which are independent of supply voltage. Each driver features a dedicated active-high enable input which is internally pulled high to V DD through 100 k?, allowing the pins to be left unconnected if it is not required to disable the driver outputs. The driver inputs have been designed to protect against ground bounce and are protected to withstand -5 V of voltage swing at -40 mA. Driver outputs are also protected to withstand 500 mA of reverse current. The MIC4223/MIC4224/MIC4225 are available in three configurations using industry standard pin out; dual inverting (MIC4223), dual non-inverting (MIC4224) and complimentary (MIC4225). They are available in 8-pin SOIC and thermally enhanced e-PAD 8-pin MSOP and support operating junction temperatures from -40°C to +125°C.

Key Features:

• 4.5 V to 18 V supply voltage operating range.
• High peak source/sink current.
• ±3 A at V DD = 8 V.
• ±4 A at V DD = 12 V.
• 15 ns/15 ns Rise and Fall times with 2000 pF load.
• 25 ns/35 ns (Rising/Falling) input propagation delay.
• 20 ns/45 ns (Rising/Falling) enable propagation delay.
• Active-high driver enable inputs with 100 k? pull-ups.
• CMOS and TTL logic input and enable thresholds independent of supply voltage.
• Driver input protection to -5 V at -40 mA.
• Output Latch-up protection to >500 mA reverse current.
• Industry standard pin out with two package options.
• ePAD MSOP-8 ( q JA = 60 ° C/W).
• 8-pin SOIC ( q JA = 120 °C/W).
• Available in dual-inverting (MIC4223), dual non-inverting (MIC4224) and complementary (MIC4225).
• Dual output drive by paralleling channels.
• -40°C to +125°C operating junction temperature range.

Applications:

• HIgh-efficiency MOSFET Switching.
• Switch mode power supplies.
• DC-to-DC convertors.
• Motor and solenoid drivers.
• Clock and line drivers.
• Synchronous rectifiers.
• Pulse transformer drive.
• Class D switching amplifiers.