EL7554IRE Buck Switching Regulator IC Equivalent & Substitute Parts

Part Overview

The EL7554IRE is a buck switching regulator IC manufactured by Renesas Electronics Corporation, designed for positive adjustable output applications. This device functions as a step-down converter with a single adjustable output delivering 4A at 0.8V to 6V output range from a 3V to 6V input supply. The EL7554IRE is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance.

Substiute Parts

EL7554IRE

Renesas Electronics CorporationIn Stock: 1061EL7554IRE Datasheet

Current PartRFQ

EL7222CSZ-T7

Renesas Electronics CorporationIn Stock: 5210EL7222CSZ-T7 Datasheet

DirectRFQ

EL7566DREZ

Renesas Electronics CorporationIn Stock: 3589EL7566DREZ Datasheet

DirectRFQ

EL7554IREZ

Renesas Electronics CorporationIn Stock: 6245EL7554IREZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the EL7554IRE is determined by the following critical parameters:

Primary Substitution Criteria:

• Topology: Buck (step-down) switching regulator
• Output Configuration: Positive adjustable
• Package: 28-TSSOP with exposed pad
• Input Voltage Range: 3V to 6V
• Output Voltage Range: 0.8V to 6V (adjustable)
• Switching Frequency: 200kHz to 1MHz
• Synchronous Rectifier: Present
• Mounting Type: Surface Mount

Substitute Categories:

Parametric Equivalent: EL7554IREZ is a direct parametric match with identical electrical specifications and package configuration. The primary difference is packaging format (Tube vs. Cut Tape) and RoHS compliance status (ROHS3 Compliant vs. non-compliant).

Direct Manufacturer Substitute: EL7566DREZ is a higher-current variant (6A vs. 4A output) within the same product family, maintaining identical input voltage range, output voltage adjustability, package, and switching frequency. This part is suitable for applications requiring increased current capacity while maintaining all other electrical and mechanical compatibility.

Non-Compatible Listing: EL7222CSZ-T7 is a low-side gate driver IC with fundamentally different function and application. This part does not qualify as a substitute due to different topology, package (8-SOIC vs. 28-TSSOP), and operational purpose.

Parameter Comparison

Engineering Selection Recommendations

EL7554IREZ Selection: This parametric equivalent is the primary substitute for direct replacement in existing designs. Electrical specifications and package dimensions are identical to the EL7554IRE. The key advantage is ROHS3 compliance, making this part suitable for applications with RoHS regulatory requirements. Operating temperature range remains -40°C to 85°C, maintaining full compatibility with the original design envelope. Tube packaging format requires verification against assembly line requirements if the original design specified Cut Tape format.

EL7566DREZ Selection: This part is suitable only for applications where increased output current capacity (6A vs. 4A) is required or beneficial. All other electrical parameters remain identical, and the 28-TSSOP package ensures mechanical compatibility. The operating temperature range is reduced to 0°C to 85°C, which may limit use in applications requiring full -40°C to 85°C operation. ROHS3 compliance is an additional advantage. This part should be selected only when the 6A current rating is a design requirement or when higher current margin is desired for thermal or reliability considerations.

Compliance Considerations: Both substitute parts offer ROHS3 compliance, addressing regulatory requirements that may not be met by the original RoHS non-compliant EL7554IRE. Selection should account for end-product regulatory obligations and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can EL7554IREZ be used as a direct drop-in replacement for EL7554IRE?

A: Yes. EL7554IREZ is a parametric equivalent with identical electrical specifications, output current rating (4A), input/output voltage ranges, switching frequency, and 28-TSSOP package configuration. The primary differences are packaging format (Tube vs. Cut Tape) and RoHS compliance status. Verify packaging format compatibility with your assembly process before implementation.

Q: What is the key difference between EL7554IRE and EL7566DREZ?

A: The primary difference is output current capacity: EL7554IRE delivers 4A while EL7566DREZ delivers 6A. All other electrical parameters—input voltage range (3V to 6V), output voltage adjustability (0.8V to 6V), switching frequency (200kHz to 1MHz), and package (28-TSSOP)—remain identical. EL7566DREZ also has a reduced operating temperature range (0°C to 85°C vs. -40°C to 85°C).

Q: Is EL7222CSZ-T7 a suitable substitute?

A: No. EL7222CSZ-T7 is a low-side gate driver IC with a different topology, function, and package (8-SOIC). It is not compatible with applications designed for the EL7554IRE buck regulator.

Q: What are the package compatibility considerations?

A: All three compatible parts use the 28-TSSOP (0.173", 4.40mm Width) package with exposed pad. Physical dimensions and PCB footprints are identical. The difference between EL7554IRE (Cut Tape) and EL7554IREZ/EL7566DREZ (Tube) is packaging format only and does not affect electrical or mechanical compatibility on the PCB.

Q: Does operating temperature range affect substitution?

A: EL7554IREZ maintains the full -40°C to 85°C operating range of the EL7554IRE. EL7566DREZ has a reduced range of 0°C to 85°C. If your application requires operation below 0°C, EL7566DREZ is not suitable. For applications within 0°C to 85°C, EL7566DREZ is compatible.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: EL7554IRE is RoHS non-compliant, while both EL7554IREZ and EL7566DREZ are ROHS3 compliant. If your end product or supply chain requires RoHS compliance, select EL7554IREZ or EL7566DREZ. If RoHS compliance is not a requirement, the original EL7554IRE remains functionally equivalent.