SP6660EN-L/TR Equivalent & Substitute Parts

Part Overview

The SP6660EN-L/TR is a charge pump switching regulator IC manufactured by MaxLinear, Inc., designed for power management applications requiring positive or negative fixed voltage outputs. This device operates as a ratiometric regulator with a single output capable of delivering 200mA across an input voltage range of 1.5V to 4.25V. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

SP6660EN-L/TR

MaxLinear, Inc.In Stock: 17835SP6660EN-L/TR Datasheet

Current PartRFQ

MAX660MX/NOPB

Texas InstrumentsIn Stock: 18129MAX660MX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SP6660EN-L/TR is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Topology: Charge Pump
• Output Configuration: Positive or Negative
• Output Type: Fixed
• Number of Outputs: 1
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Switching Frequency: 10kHz, 80kHz

Allowable Variation Parameters:

• Voltage - Input (Max): Substitute must support minimum 4.25V; higher maximum ratings are acceptable
• Current - Output: Substitute must support minimum 200mA; higher output current ratings are acceptable
• Voltage - Output: Must support -Vin, 2Vin configurations

The MAX660MX/NOPB qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The MAX660MX/NOPB is classified as the manufacturer-recommended substitute for the SP6660EN-L/TR. Selection of this substitute is supported by the following factors:

Product Status: The MAX660MX/NOPB maintains active product status with Texas Instruments, ensuring ongoing availability and technical support. The SP6660EN-L/TR is obsolete, necessitating transition to an alternative component.

Compliance & Certifications: The MAX660MX/NOPB is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in most jurisdictions.

Electrical Compatibility: Both devices share identical topology, output configuration, switching frequency, and operating temperature range. The input voltage maximum of the substitute (5.5V) exceeds the original specification (4.25V), providing additional design margin. The moisture sensitivity level remains unchanged at MSL 1 (Unlimited).

Mechanical Compatibility: Package and mounting specifications are identical, enabling direct PCB layout compatibility without redesign.

Current Output Consideration: The MAX660MX/NOPB delivers 100mA maximum output current, compared to 200mA for the SP6660EN-L/TR. Applications requiring the full 200mA output capacity of the original device must evaluate whether the reduced current rating of the substitute meets system requirements.

Frequently Asked Questions (FAQ)

Q: Can the MAX660MX/NOPB directly replace the SP6660EN-L/TR on existing PCBs?

A: Yes, from a mechanical and electrical interface perspective. Both devices use identical 8-SOIC packaging and pinout compatibility is maintained. However, the reduced output current rating (100mA vs. 200mA) must be verified against application load requirements.

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

A: The primary difference is output current capacity. The SP6660EN-L/TR delivers 200mA, while the MAX660MX/NOPB delivers 100mA. All other electrical and mechanical parameters are equivalent or superior in the substitute.

Q: Why is the SP6660EN-L/TR obsolete?

A: The SP6660EN-L/TR is listed as obsolete by MaxLinear, Inc. The MAX660MX/NOPB represents the active alternative from Texas Instruments for continued design support and production.

Q: Are there any compliance differences between the two parts?

A: The MAX660MX/NOPB is certified ROHS3 compliant and REACH unaffected. The original SP6660EN-L/TR compliance status is not specified in available documentation. The substitute meets current regulatory standards for electronic component procurement.

Q: What is the input voltage range difference?

A: The SP6660EN-L/TR accepts input voltage from 1.5V to 4.25V. The MAX660MX/NOPB accepts input voltage from 1.5V to 5.5V. The substitute provides a wider input range, offering additional design flexibility and margin.

Q: Are the switching frequencies identical?

A: Yes. Both devices operate at 10kHz and 80kHz switching frequencies, ensuring equivalent EMI characteristics and filtering requirements.

Q: What packaging options are available for the MAX660MX/NOPB?

A: The MAX660MX/NOPB is supplied in Cut Tape (CT) and Digi-Reel packaging formats, both in 8-SOIC configuration matching the original device.