MAX1775EEE Buck Regulator Controller - Equivalent & Substitute Parts

Part Overview

The MAX1775EEE is a Buck Regulator Positive Output Step-Down DC-DC Controller IC in 16-QSOP packaging, designed for power management applications requiring efficient voltage step-down conversion. This component functions as a transistor driver with synchronous rectification capability and operates across a wide supply voltage range of 2.7V to 28V.

The MAX1775EEE is classified 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 controller.

Substiute Parts

MAX1775EEE

Analog Devices Inc./Maxim IntegratedIn Stock: 3390MAX1775EEE Datasheet

Current PartRFQ

MAX1775EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 870MAX1775EEE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX1775EEE is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck regulator with positive output step-down configuration
• Output Architecture: Transistor driver output type with 2 outputs, 1 phase
• Electrical Specifications: Supply voltage range 2.7V ~ 28V, switching frequency up to 1.25MHz, 100% maximum duty cycle, synchronous rectification capability
• Control Interface: Enable control feature
• Thermal Range: Operating temperature -40°C ~ 85°C
• Package Compatibility: 16-SSOP surface mount package (0.154", 3.90mm width)

The MAX1775EEE+ qualifies as a direct substitute based on identical electrical specifications, package form factor, and functional characteristics. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX1775EEE+ is the direct functional equivalent of the MAX1775EEE. Both parts share identical electrical specifications, package geometry, and operational characteristics. Selection between these parts should be based on the following criteria:

MAX1775EEE: Suitable for applications where existing inventory or legacy system compatibility is required. Product status is obsolete; future availability may be limited.

MAX1775EEE+: Recommended for new designs and ongoing production. This variant is actively manufactured, carries ROHS3 compliance certification, and is supplied in tube packaging. The active product status ensures long-term supply chain availability and regulatory alignment with current environmental standards.

For applications subject to RoHS compliance requirements, the MAX1775EEE+ is the appropriate selection. Both parts are functionally interchangeable at the circuit level when electrical and thermal specifications are met.

Frequently Asked Questions (FAQ)

Q: Can MAX1775EEE+ be used as a direct replacement for MAX1775EEE in existing designs?

A: Yes. The MAX1775EEE+ is electrically and functionally identical to the MAX1775EEE. Both parts operate with the same supply voltage range (2.7V ~ 28V), switching frequency (up to 1.25MHz), and package form factor (16-SSOP). No circuit modifications are required for substitution.

Q: What is the difference between MAX1775EEE and MAX1775EEE+?

A: The primary differences are product status and compliance certification. The MAX1775EEE is obsolete, while the MAX1775EEE+ is actively manufactured. The MAX1775EEE+ carries ROHS3 compliance, whereas the MAX1775EEE is RoHS non-compliant. Electrical and functional specifications are identical.

Q: Are there packaging differences between these parts?

A: The MAX1775EEE+ is supplied in tube packaging. The MAX1775EEE packaging specification is not defined in the available data. Both parts use the same 16-SSOP surface mount package form factor.

Q: Which part should be selected for new product designs?

A: The MAX1775EEE+ should be selected for new designs. It is actively produced, carries current environmental compliance certifications (ROHS3), and ensures long-term supply chain availability.

Q: Are both parts suitable for the -40°C ~ 85°C operating temperature range?

A: Yes. Both the MAX1775EEE and MAX1775EEE+ are rated for identical operating temperatures of -40°C to 85°C (TA).