MIC4427CM Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The MIC4427CM is a low-side gate driver IC manufactured by Microchip Technology, designed for driving N-Channel and P-Channel MOSFETs in 8-SOIC surface mount packaging. This part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and design requirements. The MIC4427CM operates with a supply voltage range of 4.5V to 18V and delivers peak output currents of 1.5A for both source and sink configurations, making it suitable for applications requiring independent dual-channel gate driving with non-inverting logic.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Part Number	MIC4427CM
Category	Power Management (PMIC)
Description	IC GATE DRVR LOW-SIDE 8SOIC
Driven Configuration	Low-Side
Number of Drivers	2
Gate Type	N-Channel, P-Channel MOSFET
Voltage - Supply	4.5V ~ 18V
Logic Voltage - VIL, VIH	0.8V, 2.4V
Current - Peak Output (Source, Sink)	1.5A, 1.5A
Input Type	Non-Inverting
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	0°C ~ 150°C (TJ)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MIC4427CM is determined by strict equivalence across the following critical parameters:

Driven Configuration: Low-Side only
Number of Drivers: 2 independent channels
Gate Type: N-Channel and P-Channel MOSFET compatibility
Voltage - Supply: 4.5V ~ 18V range
Logic Voltage Thresholds: VIL 0.8V, VIH 2.4V
Current - Peak Output: 1.5A source and sink capability
Input Type: Non-Inverting logic
Package / Case: 8-SOIC form factor (0.154", 3.90mm Width)
Mounting Type: Surface Mount

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in rise/fall time performance, operating temperature range, and RoHS compliance status are secondary considerations that do not affect functional substitutability for the gate driving application.

Parameter Comparison

Part Number	Manufacturer	Supply Voltage	Peak Output Current (Source/Sink)	Rise/Fall Time (Typ)	Operating Temperature	Package	RoHS Status	Product Status
MIC4427CM	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	20ns / 29ns	0°C ~ 150°C (TJ)	8-SOIC	RoHS non-compliant	Discontinued
MIC4427ZM	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	20ns / 29ns	0°C ~ 150°C (TJ)	8-SOIC	ROHS3 Compliant	Active
TC4427ACOA	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	25ns / 25ns	0°C ~ 70°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427ACOA713	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	25ns / 25ns	0°C ~ 70°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427AEOA	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	25ns / 25ns	-40°C ~ 85°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427AEOA713	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	25ns / 25ns	-40°C ~ 85°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427AVOA	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	25ns / 25ns	-40°C ~ 125°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427AVOA713	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	25ns / 25ns	-40°C ~ 125°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427COA	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	19ns / 19ns	0°C ~ 70°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427COA713	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	19ns / 19ns	0°C ~ 70°C (TA)	8-SOIC	ROHS3 Compliant	Active
TC4427EOA	Microchip Technology	4.5V ~ 18V	1.5A / 1.5A	19ns / 19ns	-40°C ~ 85°C (TA)	8-SOIC	ROHS3 Compliant	Active

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): MIC4427ZM is the primary substitute for MIC4427CM. Both parts maintain identical electrical specifications including rise/fall time performance and operating temperature range. MIC4427ZM is currently active in production and carries ROHS3 compliance, addressing regulatory requirements while preserving functional equivalence.

Active Substitutes with Extended Temperature Range: TC4427AEOA, TC4427AEOA713, TC4427AVOA, and TC4427AVOA713 are functionally equivalent alternatives with extended operating temperature ranges (-40°C to 85°C or -40°C to 125°C). These parts are suitable for applications requiring broader thermal operating conditions. The 713 suffix variants indicate Cut Tape and Digi-Reel packaging, while non-713 variants are supplied in Tube packaging.

Active Substitutes with Optimized Switching Performance: TC4427COA, TC4427COA713, and TC4427EOA deliver faster rise/fall times (19ns typical) compared to the MIC4427CM specification (20ns/29ns). These parts are suitable for applications where improved switching speed provides performance benefits. TC4427EOA extends the operating temperature range to -40°C to 85°C.

Active Substitutes with Standard Temperature Range: TC4427ACOA and TC4427ACOA713 maintain the 0°C to 70°C operating temperature range with 25ns rise/fall time performance. These parts are suitable for standard industrial applications where the narrower temperature range is acceptable.

All substitute parts carry ROHS3 compliance status, addressing environmental and regulatory requirements absent in the discontinued MIC4427CM.

Frequently Asked Questions (FAQ)

Q: Can TC4427 series parts directly replace MIC4427CM in existing designs? A: Yes. All TC4427 variants listed maintain the critical electrical specifications: 4.5V to 18V supply voltage, 1.5A peak output current (source and sink), non-inverting logic input, and 8-SOIC package form factor. Functional substitution is direct. Verify operating temperature requirements for your application to select the appropriate temperature-rated variant.

Q: What is the difference between parts with and without the "713" suffix? A: The 713 suffix indicates Cut Tape and Digi-Reel packaging format. Parts without the 713 suffix are supplied in Tube packaging. Electrical specifications are identical; packaging format differs only in supply and handling method.

Q: Why do some substitutes have different rise/fall time specifications? A: Rise/fall time variations (19ns, 20ns, or 25ns) reflect different device grades within the TC4427 family. All values remain within acceptable switching performance for low-side gate driving applications. Select based on your circuit's switching speed requirements.

Q: Is MIC4427ZM the only MIC4427 variant available? A: MIC4427ZM is the active production variant of the MIC4427 base product. MIC4427CM is discontinued. MIC4427ZM provides direct electrical equivalence with updated RoHS compliance.

Q: Which substitute should I select for extended temperature operation? A: TC4427AVOA and TC4427AVOA713 support -40°C to 125°C operating range, the widest available. TC4427AEOA and TC4427AEOA713 support -40°C to 85°C. TC4427EOA also supports -40°C to 85°C with optimized 19ns switching performance.

Q: Are all substitutes RoHS compliant? A: All active substitute parts listed carry ROHS3 compliance. The original MIC4427CM is RoHS non-compliant. Substitution with any listed part addresses RoHS regulatory requirements.

Q: Can I mix different TC4427 variants in the same production run? A: Yes, provided your circuit design accommodates the specified operating temperature range and switching performance of each variant. Verify that rise/fall time differences do not impact circuit timing or EMI performance for your application.

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