MAX628ESA+ Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The MAX628ESA+ is a low-side gate driver IC manufactured by Analog Devices Inc./Maxim Integrated, designed for driving N-Channel and P-Channel MOSFETs in power management applications. This 8-SOIC surface mount device operates across a 4.5V to 18V supply range and features independent dual-channel configuration with inverting and non-inverting input types.

The MAX628ESA+ is classified as Active product status. Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, inventory availability, or application-specific performance requirements within the allowed electrical and mechanical parameter ranges.

Key Parameters

Parameter	MAX628ESA+
Manufacturer	Analog Devices Inc./Maxim Integrated
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)	2A, 2A
Input Type	Inverting, Non-Inverting
Rise / Fall Time (Typ)	25ns, 20ns
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX628ESA+ is determined by the following critical parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical compatibility requirement
Driven Configuration: Low-Side — functional topology requirement
Number of Drivers: 2 — channel count requirement
Gate Type: N-Channel, P-Channel MOSFET — gate drive capability requirement
Input Type: Inverting, Non-Inverting — signal processing requirement
Voltage - Supply: Minimum 4.5V, maximum 18V — power supply compatibility
Current - Peak Output (Source, Sink): Minimum 2A each — output drive capability

Substitute parts must maintain compatibility across all these parameters. Parts with enhanced specifications (higher current output, faster rise/fall times, or extended temperature ranges) are functionally compatible when the core parameters align.

Parameter Comparison

Parameter	MAX628ESA+	TC4425AVOA	TC4425AVOA713	UCC27325D	UCC27325DR	UCC37325D	UCC37325DR
Manufacturer	Analog Devices Inc./Maxim Integrated	Microchip Technology	Microchip Technology	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Driven Configuration	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side
Number of Drivers	2	2	2	2	2	2	2
Gate Type	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	N-Channel, P-Channel MOSFET	N-Channel, P-Channel MOSFET
Voltage - Supply	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 15V	4.5V ~ 15V	4.5V ~ 15V	4.5V ~ 15V
Logic Voltage - VIL, VIH	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V	1V, 2V	1V, 2V	1V, 2V	1V, 2V
Current - Peak Output (Source, Sink)	2A, 2A	4.5A, 4.5A	4.5A, 4.5A	4A, 4A	4A, 4A	4A, 4A	4A, 4A
Input Type	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)	25ns, 20ns	12ns, 12ns	12ns, 12ns	20ns, 15ns	20ns, 15ns	20ns, 15ns	20ns, 15ns
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 150°C (TJ)	-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)
Package / Case	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)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Last Time Buy	Active	Last Time Buy	Active
Packaging Format	Tube	Tube	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

All substitute parts listed maintain full compatibility with the MAX628ESA+ across core electrical and mechanical parameters. Selection should be based on the following criteria:

Active Product Status Priority: TC4425AVOA, TC4425AVOA713, UCC27325DR, and UCC37325DR are designated as Active products, ensuring ongoing manufacturer support and supply chain availability.

Last Time Buy Consideration: UCC27325D and UCC37325D carry Last Time Buy status, indicating limited future availability. These parts remain functionally equivalent but should be selected only when supply chain continuity is not a primary concern.

Supply Chain Availability: Current inventory levels vary across substitute options. TC4425AVOA713 offers 3100 pieces in stock, while UCC27325D maintains 2000 pieces. Verify current availability against project timeline requirements.

Packaging Format Compatibility: All parts are available in 8-SOIC surface mount packages. Packaging format selection (Tube, Tape & Reel, or Cut Tape) depends on assembly process requirements and volume considerations.

Enhanced Performance Characteristics: TC4425AVOA and TC4425AVOA713 provide higher peak output current (4.5A versus 2A) and faster switching times (12ns versus 25ns/20ns), offering performance headroom for demanding applications while maintaining full backward compatibility.

Temperature Range Considerations: Microchip TC4425 variants and Texas Instruments UCC27325/UCC37325 variants support extended operating temperatures (-40°C to 150°C) compared to the MAX628ESA+ (-40°C to 85°C), enabling deployment in higher-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can TC4425AVOA replace MAX628ESA+ directly in existing designs?

A: Yes. TC4425AVOA maintains identical package, pin configuration, and functional parameters. The higher output current (4.5A versus 2A) and faster switching times (12ns versus 25ns/20ns) are backward compatible enhancements that do not require circuit modifications.

Q: What is the difference between TC4425AVOA and TC4425AVOA713?

A: Both parts are electrically identical. TC4425AVOA is supplied in Tube packaging, while TC4425AVOA713 is supplied in Tape & Reel format. Selection depends on assembly process requirements and volume handling.

Q: Are UCC27325D and UCC37325D interchangeable?

A: Yes, UCC27325D and UCC37325D are functionally equivalent. Both are manufactured by Texas Instruments with identical electrical specifications. UCC27325D is available in Tube packaging, while UCC37325D is available in Tape & Reel format. Both carry Last Time Buy status.

Q: What does "Last Time Buy" status mean for UCC27325D and UCC37325D?

A: Last Time Buy indicates the manufacturer has announced end-of-life for these products. Existing inventory remains available, but future production is not planned. These parts remain fully functional and equivalent to active alternatives.

Q: Why do substitute parts have higher operating temperature ranges?

A: TC4425 and UCC27325/UCC37325 families are rated to 150°C junction temperature, reflecting their design for industrial and automotive applications. The MAX628ESA+ is rated to 85°C ambient temperature. Both specifications are valid for their respective product lines and do not affect substitution compatibility.

Q: Can I use UCC27325DR in place of UCC27325D?

A: Yes. UCC27325DR and UCC27325D are electrically identical. UCC27325DR is supplied in Cut Tape and Digi-Reel format, while UCC27325D is supplied in Tube format. Selection depends on packaging and handling requirements.

Q: What supply voltage range must I verify when substituting?

A: The MAX628ESA+ operates from 4.5V to 18V. TC4425 variants support the full 4.5V to 18V range. UCC27325 and UCC37325 variants support 4.5V to 15V. If your application requires supply voltages above 15V, only TC4425 variants are suitable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the MAX628ESA+ environmental specifications.

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