MAX1675EUA-T Equivalent & Substitute Parts

Part Overview

The MAX1675EUA-T is a Boost Switching Regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for positive adjustable output voltage regulation in step-up (boost) topology applications. This component delivers 360mA output current with input voltage range from 0.7V to 5.5V and adjustable output voltage from 2V to 5.5V. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

Key Parameters

Parameter	Value
Function	Step-Up (Boost)
Output Configuration	Positive
Output Type	Adjustable (Programmable)
Number of Outputs	1
Voltage - Input (Min)	0.7V
Voltage - Input (Max)	5.5V
Voltage - Output (Min/Fixed)	2V (3.3V, 5V)
Voltage - Output (Max)	5.5V
Current - Output	360mA (Switch)
Frequency - Switching	Up to 500Hz
Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the MAX1675EUA-T is determined by the following critical parameters:

Topology: Boost (step-up) switching regulator configuration
Output Configuration: Positive output
Package Compatibility: 8-TSSOP/8-MSOP form factor (0.118", 3.00mm width)
Synchronous Rectifier: Integrated synchronous rectification capability
Input Voltage Range: Minimum 0.6V to 5.5V maximum
Output Voltage Range: Adjustable from fixed minimum to 5.5V maximum
Current Capability: Output current rating of 360mA or greater
Operating Temperature: -40°C to 85°C range
Surface Mount: SMD mounting compatibility

Two substitute parts are identified:

MAX1675EUA+T (Direct Equivalent): Identical electrical specifications with active product status and improved RoHS3 compliance
L6920DBTR (Functional Substitute): STMicroelectronics alternative with higher current capability (800mA) and compatible package, though with fixed output type and different switching frequency specification

Parameter Comparison

Parameter	MAX1675EUA-T (Main)	MAX1675EUA+T (Substitute)	L6920DBTR (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	STMicroelectronics
Function	Step-Up	Step-Up	Step-Up
Output Configuration	Positive	Positive	Positive
Topology	Boost	Boost	Boost
Output Type	Adjustable (Programmable)	Adjustable (Programmable)	Adjustable (Fixed)
Number of Outputs	1	1	1
Voltage - Input (Min)	0.7V	0.7V	0.6V
Voltage - Input (Max)	5.5V	5.5V	5.5V
Voltage - Output (Min/Fixed)	2V (3.3V, 5V)	2V (3.3V, 5V)	1.8V (3.3V, 5V)
Voltage - Output (Max)	5.5V	5.5V	5.5V
Current - Output	360mA (Switch)	360mA (Switch)	800mA (Switch)
Synchronous Rectifier	Yes	Yes	Yes
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

MAX1675EUA+T is the primary substitute for MAX1675EUA-T. Both components share identical electrical specifications, package form factor, and functional characteristics. The MAX1675EUA+T offers the advantage of active product status and ROHS3 compliance, addressing regulatory requirements and long-term availability concerns associated with the obsolete MAX1675EUA-T.

L6920DBTR serves as a functional alternative when higher output current capacity is required. This STMicroelectronics component provides 800mA output current compared to the 360mA of the MAX1675EUA-T, with compatible package and operating temperature specifications. The L6920DBTR features fixed output type rather than programmable adjustment and lower minimum input voltage (0.6V vs. 0.7V). Both substitute parts maintain ROHS3 compliance and active product status.

Frequently Asked Questions (FAQ)

Q: Can MAX1675EUA+T directly replace MAX1675EUA-T without circuit modifications?

A: Yes. The MAX1675EUA+T is electrically and functionally identical to MAX1675EUA-T with matching input/output voltage ranges, current ratings, package form factor, and operating temperature specifications. The primary differences are product status (active vs. obsolete) and RoHS compliance level.

Q: What are the key differences between MAX1675EUA+T and L6920DBTR?

A: Both are boost regulators in compatible 8-MSOP packages with synchronous rectification. MAX1675EUA+T provides programmable output voltage adjustment and 360mA current. L6920DBTR offers fixed output voltage options and higher 800mA current capacity. L6920DBTR has lower minimum input voltage (0.6V vs. 0.7V) and higher moisture sensitivity level (MSL 3 vs. MSL 1).

Q: Are package dimensions identical across all three parts?

A: Yes. MAX1675EUA-T, MAX1675EUA+T, and L6920DBTR all use 8-TSSOP/8-MSOP packages with 0.118" (3.00mm) width, enabling direct PCB layout compatibility.

Q: Does L6920DBTR require different PCB layout considerations?

A: L6920DBTR has MSL 3 (168 Hours) moisture sensitivity compared to MSL 1 (Unlimited) for the MAX1675 variants. This requires adherence to moisture handling and storage protocols during assembly. PCB layout compatibility remains unchanged due to identical package dimensions.

Q: Which substitute is recommended for new designs?

A: MAX1675EUA+T is recommended for designs requiring programmable output voltage and 360mA current with active product support. L6920DBTR is suitable when 800mA output current is required and fixed output voltage options meet application needs.

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