MAX1654EEE Buck Regulator Controller IC Equivalent & Substitute Parts

Part Overview

The MAX1654EEE is a buck regulator positive output step-down DC-DC controller IC manufactured by Analog Devices Inc./Maxim Integrated in a 16-QSOP package. This device functions as a transistor driver for step-down topology applications with dual output capability. The MAX1654EEE is classified as obsolete product status, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Direct manufacturer alternatives and parametric equivalents are available from the same manufacturer family with active product status.

Substiute Parts

MAX1654EEE

Analog Devices Inc./Maxim IntegratedIn Stock: 739MAX1654EEE Datasheet

Current PartRFQ

MAX1654EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1188MAX1654EEE+ Datasheet

DirectRFQ

MAX1653EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2244MAX1653EEE+ Datasheet

Parametric EquivalentRFQ

MAX1655EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 4452MAX1655EEE+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX1654EEE is determined by strict alignment of electrical and mechanical parameters across the Analog Devices MAX165x controller family. The primary substitution criterion is functional equivalence within the buck regulator controller topology, maintaining identical supply voltage range (4.5V ~ 30V), switching frequency options (150kHz, 300kHz), duty cycle capability (98%), and control feature set (Enable, Soft Start). All substitute parts maintain the same 16-SSOP package footprint and surface mount configuration, ensuring mechanical compatibility.

The MAX1654EEE+ serves as a direct manufacturer equivalent with identical electrical specifications and active product status. The MAX1653EEE+ and MAX1655EEE+ function as parametric equivalents, maintaining core controller functionality with a single output configuration instead of dual outputs. All three substitute parts preserve the synchronous rectifier and clock sync capabilities essential to buck regulator operation.

Key parameters determining substitution eligibility:

• Topology: Buck (Step-Down)
• Package: 16-SSOP
• Supply Voltage: 4.5V ~ 30V
• Switching Frequency: 150kHz, 300kHz
• Duty Cycle (Max): 98%
• Synchronous Rectifier: Yes
• Clock Sync: Yes
• Operating Temperature: -40°C ~ 85°C

Parameter Comparison

Engineering Selection Recommendations

The MAX1654EEE+ is the primary substitute for the obsolete MAX1654EEE, offering identical electrical specifications with active product status and ROHS3 compliance. This direct equivalent maintains dual output configuration and is the preferred choice for designs requiring no circuit modification.

The MAX1653EEE+ and MAX1655EEE+ are parametric equivalents suitable for applications where single output configuration is acceptable. Both devices maintain all core buck controller functionality, supply voltage range, switching frequency options, and control features. These alternatives provide active product status and ROHS3 compliance.

Selection between MAX1654EEE+ and the single-output alternatives (MAX1653EEE+, MAX1655EEE+) depends on circuit design requirements for output channel count. All three substitute parts are electrically and mechanically compatible within the specified parameter constraints and maintain identical package footprint for direct PCB replacement.

Frequently Asked Questions (FAQ)

Q: Can MAX1654EEE+ directly replace MAX1654EEE without circuit modification?

A: Yes. The MAX1654EEE+ maintains identical electrical specifications, package footprint, and pin configuration. Direct PCB replacement is possible.

Q: What is the primary difference between MAX1654EEE+ and MAX1653EEE+ or MAX1655EEE+?

A: The MAX1654EEE+ provides dual output configuration (2 outputs), while MAX1653EEE+ and MAX1655EEE+ provide single output configuration (1 output). All other electrical parameters remain equivalent.

Q: Are the substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use the identical 16-SSOP package with 0.154" width and surface mount configuration, ensuring mechanical compatibility with existing PCB designs.

Q: What compliance improvements do the substitute parts offer?

A: The MAX1654EEE+, MAX1653EEE+, and MAX1655EEE+ are all ROHS3 compliant, compared to the obsolete MAX1654EEE which is RoHS non-compliant. All maintain REACH Unaffected status.

Q: Are there any differences in operating temperature range?

A: No. All parts operate across the identical temperature range of -40°C ~ 85°C (TA).

Q: Can MAX1653EEE+ or MAX1655EEE+ be used in a dual-output application?

A: No. These parts provide single output configuration. Applications requiring dual outputs must use MAX1654EEE+ or the original MAX1654EEE.

Q: What is the moisture sensitivity level for all substitute parts?

A: All parts maintain MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.