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MIC4129
  • MIC4129
  • MIC4129

MIC4129

In Production

MIC4120 and MIC4129 MOSFET gate drivers are tough, efficient, and easy to use. The MIC4129 is an inverting driver, while the MIC4120 is a non-inverting driver. The MIC4120 and MIC4129 are improved versions of the MIC4420 and MIC4429. They are capable of 6 A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4120/4129 accept any logic input from 2.4 V to VS without external speed-up capacitors or resistor networks. Proprietary circuits allow the input to swing negative by as much as 5 V without damaging the part. Additional circuits protect against damage from electrostatic discharge. MIC4120/4129 drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern Bi...

Microchip Technology MIC4129 Product Info

16 April 2026 0

Parameters

Capacitive Load Drive

2200 pF in 12 ns

MOSFET Driver Type

Low Side

Supply Voltage Max V (volt)

20

Peak Sink Current A (ampere)

6

Peak Source Current A (ampere)

6

Propagation Delay tD1 ns (nanosecond)

45

Propagation Delay tD2 ns (nanosecond)

50

Sink Resistance Ω (ohm)

5

Source Resistance Ω (ohm)

5

Fall Time tF ns (nanosecond)

13

Rise Time tR ns (nanosecond)

12

# of Outputs

1

Output Type

Inverting

Integrated MOSFETs

External

Peak Low-Side Source Current (Ampere)

6

Supply Voltage Min V (volt)

4.5

Low-Side Source Resistance Typ (Ohms) Ω (ohm)

1.5

Low-Side Sink Resistance Typ (Ohms) Ω (ohm)

1.4

Low-Side Rise Time (ns)

12

Low-Side Fall Time (ns)

13

Low-Side Turn-On Prop Delay (ns)

45

Low Side Turn-off Propagation delay (ns)

50

Temp Range (T-Junction) Min °C (degrees Celsius)

-40

Temp Range (T-Junction) Max °C (degrees Celsius)

125

Temp Range (T-Ambient) Min °C (degrees Celsius)

-

Temp Range (T-Ambient) Max °C (degrees Celsius)

-

Output Configuration

Low-Side

Features

  • CMOS construction
  • Latch-up protected: will withstand > 200 mA reverse output current
  • Logic input withstands negative swing of up to 5 V
  • Matched rise and fall times of 25 ns
  • High peak output current at 6 A
  • Wide operating range from 4.5 V to 20 V
  • High capacitive load drive of 10,000 pF
  • Low delay time of 55 ns typical
  • Logic high input for any voltage from 2.4 V to VS
  • Low equivalent input capacitance (typical) 6 pF
  • Low supply current is 450 µA with logic 1 input
  • Low output impedance is 2.5 Ω
  • Output voltage swing within 25 mV of ground or VS
  • Exposed backside pad packaging reduces heat
  • ePad SOIC-8L (θJA = 58°C/W)
  • 3mm x 3mm MLF®-8L (θJA = 60°C/W)

    • Description

    MIC4120 and MIC4129 MOSFET gate drivers are tough, efficient, and easy to use. The MIC4129 is an inverting driver, while the MIC4120 is a non-inverting driver. The MIC4120 and MIC4129 are improved versions of the MIC4420 and MIC4429. They are capable of 6 A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4120/4129 accept any logic input from 2.4 V to VS without external speed-up capacitors or resistor networks. Proprietary circuits allow the input to swing negative by as much as 5 V without damaging the part. Additional circuits protect against damage from electrostatic discharge. MIC4120/4129 drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern BiCMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability insures adequate gate voltage to the MOSFET during power up/down sequencing.

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