MAX860ISA Equivalent & Substitute Parts

Part Overview

The MAX860ISA is a charge pump switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for power management applications requiring positive or negative fixed output voltage generation. This device operates as a ratiometric regulator with a single output capable of delivering 50mA, housed in an 8-SOIC surface mount package.

The MAX860ISA is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

MAX860ISA

Analog Devices Inc./Maxim IntegratedIn Stock: 3240MAX860ISA Datasheet

Current PartRFQ

MAX860ISA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3712MAX860ISA+ Datasheet

DirectRFQ

LMC7660IM/NOPB

Texas InstrumentsIn Stock: 366686LMC7660IM/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX860ISA are identified based on strict electrical and mechanical parameter alignment within the charge pump regulator category. The substitution logic is structured as follows:

Primary Substitution Criteria:

• Topology: Charge Pump (mandatory match)
• Package / Case: 8-SOIC (0.154", 3.90mm Width) (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• Output Type: Fixed (mandatory match)
• Number of Outputs: 1 (mandatory match)

Secondary Compatibility Parameters:

• Voltage - Input range compatibility (minimum 1.5V or 2.5V input support)
• Voltage - Input maximum rating (5.5V or higher)
• Current - Output capability (50mA or greater)
• Operating Temperature range coverage (-25°C to 85°C or broader)

Substitute parts are grouped into two categories: direct manufacturer equivalents and manufacturer-recommended alternatives. Direct equivalents maintain identical electrical specifications and output configurations. Manufacturer-recommended alternatives provide functional equivalence with potential variations in output configuration scope or switching frequency characteristics.

Parameter Comparison

Engineering Selection Recommendations

MAX860ISA+ (Direct Equivalent): The MAX860ISA+ is the primary substitute for the obsolete MAX860ISA. This part maintains identical electrical specifications, output configuration flexibility (positive or negative), and switching frequency options. The MAX860ISA+ is classified as active product status, ensuring ongoing availability and supply chain support. The device achieves ROHS3 compliance, addressing regulatory requirements that the original MAX860ISA does not meet. Selection of MAX860ISA+ is recommended for applications requiring direct functional replacement with improved compliance posture.

LMC7660IM/NOPB (Manufacturer-Recommended Alternative): The LMC7660IM/NOPB is a Texas Instruments charge pump regulator offered as a manufacturer-recommended alternative. This device shares the same 8-SOIC package and charge pump topology. The LMC7660IM/NOPB supports negative output configuration (-Vin) with an extended input voltage maximum rating of 10V compared to the MAX860ISA's 5.5V. The switching frequency is fixed at 10kHz rather than selectable. This part is classified as active product status and achieves ROHS3 compliance. Selection of LMC7660IM/NOPB is appropriate for applications requiring negative output voltage generation with higher input voltage tolerance, where fixed switching frequency operation is acceptable.

Frequently Asked Questions (FAQ)

Q: Can MAX860ISA+ be used as a direct replacement for MAX860ISA? A: Yes. The MAX860ISA+ maintains identical electrical specifications, output configuration options, and switching frequency characteristics. The primary differences are product status (active versus obsolete) and improved RoHS compliance. No circuit modifications are required for substitution.

Q: What are the key differences between MAX860ISA+ and LMC7660IM/NOPB? A: The MAX860ISA+ supports both positive and negative output configurations, while the LMC7660IM/NOPB is limited to negative output configuration. The LMC7660IM/NOPB accepts higher input voltages (up to 10V versus 5.5V) and operates at a fixed 10kHz switching frequency rather than the selectable frequencies of the MAX860ISA+. Both devices are housed in identical 8-SOIC packages and are ROHS3 compliant.

Q: Is the LMC7660IM/NOPB suitable for applications requiring positive output voltage generation? A: No. The LMC7660IM/NOPB is configured for negative output voltage generation only (-Vin). Applications requiring positive output voltage capability must use the MAX860ISA+ or equivalent devices with positive output configuration support.

Q: Are all substitute parts available in the same package? A: Yes. The MAX860ISA, MAX860ISA+, and LMC7660IM/NOPB are all housed in 8-SOIC (0.154", 3.90mm Width) surface mount packages with identical pinout compatibility for this package type.

Q: What is the impact of switching frequency differences between MAX860ISA+ and LMC7660IM/NOPB? A: The MAX860ISA+ offers selectable switching frequencies (6kHz, 50kHz, 130kHz) providing design flexibility for noise and efficiency optimization. The LMC7660IM/NOPB operates at a fixed 10kHz switching frequency. Selection depends on application requirements for electromagnetic interference management and power efficiency characteristics.

Q: Are both substitute parts RoHS compliant? A: Yes. Both MAX860ISA+ and LMC7660IM/NOPB are ROHS3 compliant. The original MAX860ISA is RoHS non-compliant, making substitution necessary for applications subject to RoHS regulatory requirements.