SP7656EN2-L/TR Equivalent & Substitute Parts

Part Overview

The SP7656EN2-L/TR is a buck switching regulator IC manufactured by MaxLinear, Inc., designed for positive adjustable output applications. This integrated circuit delivers 3A output current with an adjustable voltage range from 0.6V to 28V, operating from a 4.5V to 29V input supply. The device is housed in an 8-SOIC package with exposed pad and operates across -40°C to 125°C junction temperature range.

The SP7656EN2-L/TR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this regulator topology.

Substiute Parts

SP7656EN2-L/TR

MaxLinear, Inc.In Stock: 15939SP7656EN2-L/TR Datasheet

Current PartRFQ

SP7650ER-L/TR

MaxLinear, Inc.In Stock: 19035SP7650ER-L/TR Datasheet

MFR RecommendedRFQ

SP7652ER-L/TR

MaxLinear, Inc.In Stock: 18353SP7652ER-L/TR Datasheet

MFR RecommendedRFQ

XRP6124HVESTR0.5-F

MaxLinear, Inc.In Stock: 3419XRP6124HVESTR0.5-F Datasheet

MFR RecommendedRFQ

L7981ATR

STMicroelectronicsIn Stock: 1525L7981ATR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SP7656EN2-L/TR are selected based on functional equivalence within the following critical parameters:

• Function: Step-down (buck) topology
• Output Configuration: Positive adjustable output
• Output Current Capability: 3A or greater
• Input Voltage Range: Minimum 4.5V or lower; Maximum 28V or greater
• Output Voltage Range: Minimum 0.6V or lower; Maximum 27V or greater
• Topology: Buck switching regulator
• Mounting Type: Surface mount

The substitute parts are grouped into two categories: direct pin-compatible replacements and functional equivalents with different package configurations. Direct replacements maintain the same electrical performance envelope while offering active product status and improved availability. Functional equivalents provide the required buck regulation capability with enhanced features such as synchronous rectification or higher current ratings.

Parameter Comparison

Engineering Selection Recommendations

SP7650ER-L/TR is an active MaxLinear product offering equivalent 3A output current with identical positive adjustable topology. This part features synchronous rectification for improved efficiency and operates across -40°C to 85°C. The 26-PowerVFDFN package differs from the original 8-SOIC, requiring PCB layout modification. RoHS compliance is confirmed.

SP7652ER-L/TR is an active MaxLinear product with enhanced 6A output current capability, maintaining the same positive adjustable topology and 600kHz switching frequency as the original part. This device includes synchronous rectification and operates across -40°C to 125°C, matching the original temperature range. The 26-PowerVFDFN package requires PCB redesign. RoHS compliance is confirmed.

XRP6124HVESTR0.5-F is an active MaxLinear buck controller IC in SOT-23-5 package. This part functions as a transistor driver rather than an integrated regulator, requiring external power stage components. It supports 100kHz to 1MHz switching frequency range and operates across -40°C to 125°C. This option is suitable only for designs requiring external MOSFET implementation. RoHS compliance is confirmed.

L7981ATR is an active STMicroelectronics product maintaining the same 8-SOIC package footprint as the original SP7656EN2-L/TR. This part provides equivalent 3A output current with adjustable 0.6V to 28V output range and 4.5V to 28V input range. Operating temperature extends to 150°C junction temperature. Switching frequency is programmable from 250kHz to 1MHz. ROHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can SP7650ER-L/TR directly replace SP7656EN2-L/TR without PCB modification?

A: No. While both devices provide 3A adjustable buck regulation, the SP7650ER-L/TR uses a 26-PowerVFDFN package versus the original 8-SOIC package. PCB layout redesign is required. Additionally, the minimum output voltage is 0.8V instead of 0.6V, which may affect designs requiring lower output voltages.

Q: What is the advantage of SP7652ER-L/TR over SP7650ER-L/TR?

A: The SP7652ER-L/TR provides 6A output current compared to 3A in the SP7650ER-L/TR, enabling higher power delivery. Both share the same 26-PowerVFDFN package and synchronous rectification feature. The SP7652ER-L/TR maintains the original 600kHz switching frequency and -40°C to 125°C operating range.

Q: Is XRP6124HVESTR0.5-F a complete replacement?

A: No. The XRP6124HVESTR0.5-F is a buck controller IC requiring external power stage components (MOSFETs, inductors, capacitors). It is not a direct integrated regulator replacement. This option is suitable only for designs where external component implementation is acceptable.

Q: Why does L7981ATR maintain the same package as the original part?

A: The L7981ATR uses the 8-SOIC (0.154", 3.90mm Width) Exposed Pad package, identical to SP7656EN2-L/TR. This enables potential drop-in replacement with minimal PCB modification, though electrical parameter differences require design verification.

Q: What are the key electrical differences between substitute parts?

A: SP7650ER-L/TR and SP7652ER-L/TR have minimum output voltage of 0.8V versus 0.6V on the original. SP7652ER-L/TR provides 6A versus 3A output current. L7981ATR maintains 0.6V minimum output voltage and 3A current. XRP6124HVESTR0.5-F requires external power stage design.

Q: Are all substitute parts RoHS compliant?

A: Yes. SP7650ER-L/TR, SP7652ER-L/TR, and XRP6124HVESTR0.5-F are RoHS Compliant. L7981ATR is ROHS3 Compliant. The original SP7656EN2-L/TR RoHS status is not specified.