IR4428S Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR4428S is a low-side gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET applications. This device operates with a supply voltage range of 6V to 20V and features dual independent channels with inverting and non-inverting input configurations. The IR4428S is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across driven configuration, channel type, gate type support, and package form factor while meeting or exceeding the electrical performance specifications.

Key Parameters

Parameter	IR4428S Value
Manufacturer	Infineon Technologies
Product Status	Obsolete
Driven Configuration	Low-Side
Number of Drivers	2
Gate Type	IGBT, N-Channel MOSFET
Voltage - Supply	6V ~ 20V
Current - Peak Output (Source, Sink)	2.3A, 3.3A
Input Type	Inverting, Non-Inverting
Package / Case	8-SOIC (0.154", 3.90mm Width)
Operating Temperature	-40°C ~ 150°C (TJ)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the IR4428S are selected based on strict electrical and mechanical compatibility criteria. All substitute candidates must satisfy the following mandatory parameters:

Driven Configuration: Low-Side only
Number of Drivers: 2 independent channels
Input Type: Inverting and Non-Inverting support
Package / Case: 8-SOIC form factor (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Gate Type: Support for IGBT and/or N-Channel MOSFET

Electrical performance parameters that determine substitution validity include supply voltage range, peak output current (source and sink), logic voltage thresholds (VIL, VIH), and operating temperature range. Substitute parts must either match or exceed the IR4428S specifications in these categories to ensure functional compatibility in existing circuit designs.

Parameter Comparison

Parameter	IR4428S	IXDF602SI	IXDF602SIA	IXDF602SIATR	IXDF602SITR	LM5111-3MX/NOPB	MAX4428CSA+	MAX4428ESA+	MAX4428ESA+T	MAX628CSA+	MAX628CSA+T
Manufacturer	Infineon	IXYS	IXYS	IXYS	IXYS	National Semiconductor	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Driven Configuration	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side
Number of Drivers	2	2	2	2	2	2	2	2	2	2	2
Gate Type	IGBT, N-Channel MOSFET	IGBT, N-Channel, P-Channel MOSFET	IGBT, N-Channel, P-Channel MOSFET	IGBT, N-Channel, P-Channel MOSFET	IGBT, N-Channel, P-Channel MOSFET	N-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET
Voltage - Supply	6V ~ 20V	4.5V ~ 35V	4.5V ~ 35V	4.5V ~ 35V	4.5V ~ 35V	3.5V ~ 14V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V
Logic Voltage - VIL, VIH	0.8V, 2.7V	0.8V, 3V	0.8V, 3V	0.8V, 3V	0.8V, 3V	0.8V, 2.2V	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V
Current - Peak Output (Source, Sink)	2.3A, 3.3A	2A, 2A	2A, 2A	2A, 2A	2A, 2A	3A, 5A	1.5A, 1.5A	1.5A, 1.5A	1.5A, 1.5A	2A, 2A	2A, 2A
Input Type	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting
Rise / Fall Time (Typ)	15ns, 10ns	7.5ns, 6.5ns	7.5ns, 6.5ns	7.5ns, 6.5ns	7.5ns, 6.5ns	14ns, 12ns	20ns, 20ns	20ns, 20ns	20ns, 20ns	25ns, 20ns	25ns, 20ns
Operating Temperature	-40°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-40°C ~ 125°C (TJ)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC-EP (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC-EP (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The IR4428S is obsolete and no longer in active production. All listed substitute parts are in active production status, ensuring long-term availability and supply chain continuity.

IXYS IXDF602 Series (IXDF602SI, IXDF602SIA, IXDF602SIATR, IXDF602SITR): These parts provide the broadest electrical performance envelope with supply voltage range of 4.5V to 35V, exceeding the IR4428S 6V to 20V specification. The IXDF602 series offers faster switching characteristics (7.5ns rise, 6.5ns fall time) and extended operating temperature range (-55°C to 150°C). All variants are ROHS3 compliant. The IXDF602SI and IXDF602SITR include exposed pad variants for enhanced thermal performance. These parts are direct functional replacements with superior electrical specifications.

National Semiconductor LM5111-3MX/NOPB: This part supports N-Channel MOSFET gate driving with peak output current of 3A source and 5A sink, exceeding the IR4428S sink current specification. Supply voltage range is 3.5V to 14V, which overlaps the IR4428S operating window. Operating temperature range is -40°C to 125°C. This part is suitable for applications requiring higher sink current capability.

Analog Devices/Maxim MAX4428 Series (MAX4428CSA+, MAX4428ESA+, MAX4428ESA+T): These parts operate within 4.5V to 18V supply range and support both N-Channel and P-Channel MOSFET driving. Peak output current is 1.5A source and sink, which is lower than the IR4428S specification. Operating temperature variants include 0°C to 70°C (MAX4428CSA+) and -40°C to 85°C (MAX4428ESA+, MAX4428ESA+T). All variants are ROHS3 compliant. These parts are suitable for applications with lower current requirements.

Analog Devices/Maxim MAX628 Series (MAX628CSA+, MAX628CSA+T): These parts provide 2A source and sink current capability, matching the IXDF602 series performance. Supply voltage range is 4.5V to 18V. Operating temperature range is 0°C to 70°C. Both variants are ROHS3 compliant. These parts are suitable for applications requiring moderate current output with standard temperature operating range.

All substitute parts maintain the mandatory low-side configuration, dual independent channels, inverting and non-inverting input support, and 8-SOIC package form factor required for IR4428S replacement.

Frequently Asked Questions (FAQ)

Q: Can the IXDF602 series directly replace the IR4428S in existing designs?

A: Yes. The IXDF602 series maintains all mandatory functional parameters: low-side configuration, dual independent channels, inverting and non-inverting inputs, and 8-SOIC package. The broader supply voltage range (4.5V to 35V) and faster switching characteristics provide enhanced performance. Standard 8-SOIC variants (IXDF602SIA, IXDF602SIATR) are pin-compatible with the IR4428S. Exposed pad variants (IXDF602SI, IXDF602SITR) require PCB layout modification to accommodate the additional thermal pad.

Q: What is the difference between 8-SOIC and 8-SOIC-EP packages?

A: The 8-SOIC-EP (Exposed Pad) variant includes an additional thermal pad on the bottom of the package for improved heat dissipation. This is beneficial in high-power applications. The standard 8-SOIC package does not include this thermal pad. Both maintain the same 0.154" (3.90mm) width and pin pitch. PCB layout must be modified to accommodate the exposed pad if upgrading from standard 8-SOIC to 8-SOIC-EP.

Q: Which substitute part has the highest peak output current?

A: The LM5111-3MX/NOPB provides the highest sink current at 5A, with 3A source current. This exceeds all other listed substitutes and the original IR4428S specification (2.3A source, 3.3A sink). This part is recommended for applications requiring maximum current drive capability.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant except the LM5111-3MX/NOPB, for which RoHS status is not specified in the provided data. The original IR4428S is RoHS non-compliant. If RoHS compliance is a design requirement, select from the IXYS IXDF602 series or Analog Devices/Maxim MAX4428 and MAX628 series.

Q: What is the operating temperature range difference between variants?

A: The IXDF602 series supports the widest temperature range (-55°C to 150°C junction temperature). The LM5111-3MX/NOPB operates from -40°C to 125°C. The MAX4428ESA+ and MAX4428ESA+T support -40°C to 85°C. The MAX4428CSA+, MAX628CSA+, and MAX628CSA+T are limited to 0°C to 70°C. Select based on application thermal requirements.

Q: Can I use MAX4428 parts as a direct replacement for IR4428S?

A: The MAX4428 series maintains functional compatibility in low-side configuration, dual channels, and 8-SOIC package. However, peak output current is limited to 1.5A source and sink, which is lower than the IR4428S specification (2.3A source, 3.3A sink). Use MAX4428 parts only in applications where the lower current specification is acceptable. For equivalent or superior current performance, select IXDF602, LM5111, or MAX628 series.

Q: What packaging options are available for high-volume production?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging options are available for automated assembly. IXDF602SIATR, IXDF602SITR, MAX4428ESA+T, and MAX628CSA+T are supplied in these formats. Tube packaging is available for IXDF602SI, LM5111-3MX/NOPB, MAX4428CSA+, MAX4428ESA+, and MAX628CSA+. Select packaging based on production volume and assembly equipment requirements.

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