mic4223 Micrel Semiconductor, mic4223 Datasheet

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mic4223

Manufacturer Part Number
mic4223
Description
Dual 4a, 4.5v To 18v, 15ns Switch Time, Low-side Mosfet Drivers With Enable
Manufacturer
Micrel Semiconductor
Datasheet
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
swing within 0.3V of V
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
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
June 2009
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
DD
through 100kΩ, allowing the pins to be
DD
and 0.16V of ground.
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
• Driver input protection to -5V at -40mA
• Output Latch-up protection to >500mA reverse current
• Industry standard pin out with two package options
• Available in dual-inverting (MIC4223), dual non-
• Dual output drive by paralleling channels
• -40°C to +125°C operating junction temperature range
Block Diagram
Dual 4A, 4.5V to 18V, 15ns Switch Time,
– ±3A at V
– ±4A at V
independent of supply voltage
– ePAD MSOP-8 (θ
– 8-pin SOIC (θ
inverting (MIC4224) and complementary (MIC4225)
Low-Side MOSFET Drivers with Enable
MIC4223/MIC4224/MIC4225
DD
DD
= 8V
= 12V
JA
= 120°C/W)
JA
= 60°C/W)
M9999-061109-A
(408) 944-0800

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mic4223 Summary of contents

Page 1

... 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 ...

Page 2

... Exposed thermal pad for ePad MSOP package only (Not available on SOIC-8L package). Connect to ground. Must make a full connection to the ground plane to maximize thermal performance of the package. 2 MIC4223/MIC4224/MIC4225 Package Lead Finish 8-pin SOIC Pb-Free ...

Page 3

... GND DD ENA ENB C = 2000pF 2000pF 3.0V INA INB ENA 0.0V INA INB ENA 3 MIC4223/MIC4224/MIC4225 (2) )..................................... +4.5V to +18V DD ) ........................ –40°C to +125°C J EPAD MSOP (θ ) .............................................60°C/W JA SOIC (θ ) ........................................................120°C/W JA Min Typ 2.4 2.2 1.95 0.25 –1 – ±3 ±4 > ...

Page 4

... Micrel, Inc. Test Circuit Timing Diagram Inverting Driver June 2009 Figure 1. Test Circuit Enable to Output Timing Diagram 4 MIC4223/MIC4224/MIC4225 Non-Inverting Driver M9999-061109-A (408) 944-0800 ...

Page 5

... DD IN 0.0 -40 - Temperature (°C) I vs. Frequency DD Both Drivers Switching 180 160 140 10nF 120 100 2000 0 500 1000 Frequency (kHz) 5 MIC4223/MIC4224/MIC4225 V , Threshold vs. V ENA B 2.0 1 1.6 1 1.2 1.0 80 100 120 140 vs 1 INA INB 1.2 1.0 0.8 ...

Page 6

... V ( Propagation Delay ( MIC4223/MIC4224/MIC4225 I vs 2.2nF) DD Both Drivers Switching 120 100 2MHz 80 100kHz 60 40 50kHz 4.7nF) Output Rise Time vs 1MHz 8 6 500kHz 4 ...

Page 7

... C = 2nF 12V 18V DD 10 -40 - Temperature (°C) 7 MIC4223/MIC4224/MIC4225 Output Sink Resistance vs. Temperature 10mA 12V 18V -40 - 100 120 140 Temperature (°C) Prop. Delay (Inverting) vs. Temperature 2nF L ...

Page 8

... Block Diagram June 2009 MIC4223 INB OUTA OUTB OUTA MIC4223/MIC4224/MIC4225 MIC4224 MIC4225 OUTB OUTA OUTB M9999-061109-A (408) 944-0800 ...

Page 9

... The drivers come in both inverting and non-inverting versions. Each driver has an enable pin that turns the output off (low) regardless of the input. The MIC4223 is a dual inverting driver. The MIC4224 is a dual non-inverting driver and the MIC4225 contains an inverting and non-inverting driver. Enable Each output has an independent enable pin that forces the output low when the enable pin is driven low ...

Page 10

... Output Driver Stage Power Dissipation Power dissipation in the driver’s output stage is mainly caused by charging and discharging the gate to source and gate to drain capacitance of the external MOSFET. Figure 3 shows a simplified circuit of the MIC4223 driving an external MOSFET. Figure 3. Functional MOSFET/Driver Diagram Dissipation Caused by Switching the External ...

Page 11

... SOIC and ePAD MSOP packages. The maximum operating frequency of the driver may be limited by the maximum power dissipation of the driver package. June 2009 voltage. The DD + Pdriver Pdriver 5V. Figure 12V. Figure 5c show DD 11 MIC4223/MIC4224/MIC4225 PDISS: GATE Charge vs. Frequency 1.4 V =5V DD 1.2 1.0 0.8 0.6 0.4 0.2 0 100k 1M FREQUENCY (Hz) Figure 5a ...

Page 12

... A ground plane is recommended to minimize parasitic inductance and impedance of the return paths. The MIC4223 family of drivers is capable of high peak currents and very fast transition times. Any impedance between the driver, the decoupling capacitors and the external MOSFET will degrade the performance of the circuit. ...

Page 13

... Micrel, Inc. Evaluation Board Schematic (SOIC) June 2009 SOIC Package 13 MIC4223/MIC4224/MIC4225 M9999-061109-A (408) 944-0800 ...

Page 14

... Open location – Size 0603 (1) Vishay 1kΩ Resistor, Size 1206 (5) Micrel, Inc. Dual Inverting 4A MOSFET Driver with SOIC Package (5) Micrel, Inc. Dual Non-Inverting 4A MOSFET Driver with SOIC Package (5) Micrel, Inc. Dual Inverting/Non-Inverting 4A MOSFET Driver with SOIC Package 14 MIC4223/MIC4224/MIC4225 Qty ...

Page 15

... Micrel, Inc. PCB Layout (SOIC) June 2009 MIC4223/MIC4224/MIC4225 15 M9999-061109-A (408) 944-0800 ...

Page 16

... Micrel, Inc. Evaluation Board Schematic (e-PAD MSOP) June 2009 ePAD MSOP 16 MIC4223/MIC4224/MIC4225 M9999-061109-A (408) 944-0800 ...

Page 17

... Micrel, Inc. PCB Layout (ePAD MSOP) June 2009 MIC4223/MIC4224/MIC4225 17 M9999-061109-A (408) 944-0800 ...

Page 18

... Resistor, Size 1206 (5) Micrel, Inc. Dual Inverting 4A MOSFET Driver with ePAD MSOP Package (5) Micrel, Inc. Dual Non-Inverting 4A MOSFET Driver with ePAD MSOP Package (5) Micrel, Inc. Dual Inverting/Non-Inverting 4A MOSFET Driver with ePAD MSOP Package 18 MIC4223/MIC4224/MIC4225 Qty ...

Page 19

... Micrel, Inc. Package Information June 2009 8-Pin SOIC (M) 19 MIC4223/MIC4224/MIC4225 M9999-061109-A (408) 944-0800 ...

Page 20

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully June 2009 8-Pin ePAD MSOP (MME) indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. 20 MIC4223/MIC4224/MIC4225 M9999-061109-A (408) 944-0800 ...

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