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MIC4125
  • MIC4125
  • MIC4125

MIC4125

In Production

The MIC4123/4124/4125 family are highly reliable BiCMOS/DMOS buffer/driver/MOSFET gate drivers. They are higher output current versions of the MIC4126/4127/4128, which are improved versions of the MIC4426/4427/4428. All three families are pin-compatible. The MIC4123/4124/4125 drivers are capable of giving reliable service in more demanding electrical environments than their predecessors. They will not latch under any conditions within their power and voltage ratings. They can survive up to 5V of noise spiking, of either polarity, on the ground pin. They can accept, without either damage or logic upset, up to half an amp of reverse current (either polarity) forced back into their outputs. The MIC4123/4124/4125 series drivers are easier to use, more flexible in operation, and more forgiving t...

Microchip Technology MIC4125 Product Info

16 April 2026 0

Parameters

Capacitive Load Drive

1,800 pF in 11 ns

MOSFET Driver Type

Low Side

Supply Voltage Max V (volt)

20

Peak Sink Current A (ampere)

3

Peak Source Current A (ampere)

3

Propagation Delay tD1 ns (nanosecond)

44

Propagation Delay tD2 ns (nanosecond)

59

Sink Resistance Ω (ohm)

5

Source Resistance Ω (ohm)

5

Fall Time tF ns (nanosecond)

11

Rise Time tR ns (nanosecond)

11

# of Outputs

2

Output Type

Complementary

Integrated MOSFETs

External

Peak Low-Side Source Current (Ampere)

3

Supply Voltage Min V (volt)

4.5

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

2.3

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

2.2

Low-Side Rise Time (ns)

11

Low-Side Fall Time (ns)

11

Low-Side Turn-On Prop Delay (ns)

44

Low Side Turn-off Propagation delay (ns)

59

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

  • Reliable, low-power bipolar/CMOS/DMOS construction
  • Latch-up protected to > 200 mA reverse current
  • Logic input withstands swing to -5 V
  • High 3 A peak output current
  • Wide 4.5 V to 20 V operating range
  • Drives 1,800 pF capacitance in 25 ns
  • Short < 50 ns typical delay time
  • Delay times consistent with in supply voltage change
  • Matched rise and fall times
  • TTL logic input independent of supply voltage
  • Low equivalent 6pF input capacitance
  • Low supply current
  • 3.5 mA with logic 1 input
  • 350 µA with logic 0 input
  • Low 2.3 Ω typical output impedance
  • Output voltage swings within 25 mV of ground or VS.
  • ''426/7/8-, ''1426/7/8-, ''4426/7/8-compatible pinout
  • Inverting, noninverting, and differential configurations
  • Exposed backside pad packaging reduces heat ePad SOIC-8L (θJA = 58°C/W)
  • Description

    The MIC4123/4124/4125 family are highly reliable BiCMOS/DMOS buffer/driver/MOSFET gate drivers. They are higher output current versions of the MIC4126/4127/4128, which are improved versions of the MIC4426/4427/4428. All three families are pin-compatible. The MIC4123/4124/4125 drivers are capable of giving reliable service in more demanding electrical environments than their predecessors. They will not latch under any conditions within their power and voltage ratings. They can survive up to 5V of noise spiking, of either polarity, on the ground pin. They can accept, without either damage or logic upset, up to half an amp of reverse current (either polarity) forced back into their outputs. The MIC4123/4124/4125 series drivers are easier to use, more flexible in operation, and more forgiving than other CMOS or bipolar drivers currently available. Their BiCMOS/DMOS construction dissipates minimum power and provides rail-to-rail voltage swings. Primarily intended for driving power MOSFETs, the MIC4123/4124/4125 drivers are suitable for driving otherloads (capacitive, resistive, or inductive) which require low impedance, high peak currents, and fast switching times. Heavily loaded clocklines, coaxial cables, or piezoelectric transducers are some examples. The only known limitation on loading is that total power dissipated in the driver must be kept within the maximum power dissipation limits of the package.

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