MIC4223/MIC4224/MIC4225

Dual 4A, 4.5V to 18V, 15ns Switch Time,

Low-Side MOSFET Drivers with Enable

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

June 2009

M9999-061109-A

(408) 944-0800

General Description

The MIC4223/MIC4224/MIC4225 are a family of a dual 4A,

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

4.5V to 18V 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 4A of peak current from a 12V supply

and quickly charge and discharge a 2000pF load

capacitance in under 15ns, while allowing the outputs to

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

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 -5V

of voltage swing at -40mA. Driver outputs are also

protected to withstand 500mA 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.

Applications

• High-Efficiency MOSFET switching

• Switch mode power supplies

• DC-to-DC converters

• Motor and solenoid drivers

• Clock and line drivers

• Synchronous rectifiers

• Pulse transformer drive

• Class D switching amplifiers

Features

• 4.5V to 18V supply voltage operating range

• High peak source/sink current

• 15ns/15ns Rise and Fall times with 2000pF load

• 25ns/35ns (Rising/Falling) input propagation delay

• 20ns/45ns (Rising/Falling) enable propagation delay

• Active-high driver enable inputs with 100kΩ pull-ups

• CMOS and TTL logic input and enable thresholds

independent of supply voltage

• Driver input protection to -5V at -40mA

• Output Latch-up protection to >500mA reverse current

• Industry standard pin out with two package options

– ePAD MSOP-8 (

θ

– 8-pin SOIC (

θ

• 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

Block Diagram