MAX1684EEE Equivalent & Substitute Parts

Part Overview

The MAX1684EEE is a buck switching regulator IC from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. It functions as a step-down converter with positive output configuration, delivering 1A output current at adjustable or fixed voltage levels (1.25V to 3.3V). The device operates across an input voltage range of 2.7V to 14V with a switching frequency of 300kHz and includes a synchronous rectifier for improved efficiency.

The MAX1684EEE is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Function	Step-Down (Buck)
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Number of Outputs	1
Voltage - Input (Min)	2.7V
Voltage - Input (Max)	14V
Voltage - Output (Min/Fixed)	1.25V (3.3V)
Voltage - Output (Max)	14V
Current - Output	1A
Frequency - Switching	300kHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	16-SSOP (0.154", 3.90mm Width)
Base Product Number	MAX1684

Substitute Part Grouping Explanation

Substitution of the MAX1684EEE is determined by strict equivalence across the following critical parameters:

Topology: Buck (step-down) switching regulator
Output Configuration: Positive
Output Type: Adjustable (Fixed) voltage capability
Number of Outputs: Single output
Input Voltage Range: 2.7V to 14V
Output Voltage Range: 1.25V to 14V (with 3.3V fixed option)
Output Current: 1A
Switching Frequency: 300kHz
Synchronous Rectifier: Present
Operating Temperature Range: -40°C to 85°C
Package: 16-SSOP (0.154", 3.90mm Width)
Mounting: Surface Mount

The MAX1684EEE+ qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Parameter	MAX1684EEE	MAX1684EEE+
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Function	Step-Down	Step-Down
Output Configuration	Positive	Positive
Topology	Buck	Buck
Output Type	Adjustable (Fixed)	Adjustable (Fixed)
Number of Outputs	1	1
Voltage - Input (Min)	2.7V	2.7V
Voltage - Input (Max)	14V	14V
Voltage - Output (Min/Fixed)	1.25V (3.3V)	1.25V (3.3V)
Voltage - Output (Max)	14V	14V
Current - Output	1A	1A
Frequency - Switching	300kHz	300kHz
Synchronous Rectifier	Yes	Yes
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	16-SSOP (0.154", 3.90mm Width)	16-SSOP (0.154", 3.90mm Width)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Not specified	Tube

Engineering Selection Recommendations

The MAX1684EEE+ is the direct functional equivalent of the MAX1684EEE. Both devices share identical electrical specifications, switching characteristics, and package configuration, enabling pin-for-pin and functional compatibility.

The MAX1684EEE+ is currently in active production status, whereas the MAX1684EEE is obsolete. For new designs or ongoing production requiring this regulator topology, the MAX1684EEE+ is the appropriate selection.

The MAX1684EEE+ carries ROHS3 compliance certification, whereas the MAX1684EEE is RoHS non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements or customer specifications mandating RoHS compliance.

Both devices are supplied by Analog Devices Inc./Maxim Integrated and maintain identical base product number designation (MAX1684), confirming their interchangeability within the product family.

Frequently Asked Questions (FAQ)

Q: Can the MAX1684EEE+ be used as a direct replacement for the MAX1684EEE?

A: Yes. The MAX1684EEE+ is electrically and mechanically equivalent to the MAX1684EEE. Both devices feature identical input/output voltage ranges, output current capability, switching frequency, and 16-SSOP package configuration. Pin-for-pin substitution is supported without circuit modification.

Q: What is the primary difference between these two parts?

A: The MAX1684EEE is obsolete, while the MAX1684EEE+ is in active production. Additionally, the MAX1684EEE+ is ROHS3 compliant, whereas the MAX1684EEE is RoHS non-compliant. Electrical and functional specifications are identical.

Q: Are there packaging differences between the MAX1684EEE and MAX1684EEE+?

A: Both devices use the 16-SSOP (0.154", 3.90mm Width) package. The MAX1684EEE+ is supplied in Tube packaging, while the MAX1684EEE packaging specification is not detailed in the available data.

Q: What applications are suitable for these regulators?

A: The MAX1684 series functions as a step-down buck converter for applications requiring 1A output current with adjustable or fixed voltage output between 1.25V and 3.3V. Input voltage range spans 2.7V to 14V, supporting battery-powered and industrial applications across the -40°C to 85°C operating temperature range.

Q: Is the MAX1684EEE+ suitable for RoHS-compliant applications?

A: Yes. The MAX1684EEE+ carries ROHS3 compliance certification and is appropriate for applications subject to RoHS regulatory requirements or customer specifications mandating RoHS compliance.

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