TC7660MJA Equivalent & Substitute Parts

Part Overview

The TC7660MJA is a charge pump switching regulator IC manufactured by Microchip Technology, designed for power management applications requiring positive or negative fixed voltage outputs. This device operates as a voltage inverter or doubler with a fixed output configuration and 20mA output current capability. The TC7660MJA is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

TC7660MJA

Microchip TechnologyIn Stock: 786TC7660MJA Datasheet

Current PartRFQ

TC7660EPA

Microchip TechnologyIn Stock: 1322TC7660EPA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC7660MJA is determined by strict equivalence across the following critical parameters:

• Base product number (TC7660 series)
• Topology (Charge Pump)
• Output configuration (Positive or Negative)
• Output type (Fixed)
• Input voltage range (1.5V to 10V)
• Output voltage capability (-Vin, 2Vin)
• Output current (20mA)
• Switching frequency (10kHz)
• Mounting type (Through Hole)
• RoHS and environmental compliance

The TC7660EPA qualifies as a direct substitute based on identical electrical specifications and functional characteristics. The primary distinction lies in packaging format and operating temperature range, which do not affect core functionality for applications within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

The TC7660EPA is the manufacturer-recommended substitute for the obsolete TC7660MJA. Both components maintain identical electrical specifications, functional topology, and compliance certifications (ROHS3 Compliant, REACH Unaffected). The TC7660EPA carries active product status, ensuring continued availability and manufacturing support.

Selection of the TC7660EPA is appropriate for applications where the operating temperature range of -40°C to 85°C satisfies system requirements. The package format difference (8-CDIP versus 8-DIP) does not affect electrical performance; both are 8-pin through-hole packages with 0.300" (7.62mm) pitch and identical pinout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TC7660EPA directly replace the TC7660MJA in existing designs?

A: Yes. The TC7660EPA provides electrical and functional equivalence. Both components share identical input voltage range (1.5V to 10V), output voltage capability (-Vin, 2Vin), output current (20mA), and switching frequency (10kHz). Package dimensions and pinout are compatible for through-hole mounting applications.

Q: What is the difference between 8-CDIP and 8-DIP packaging?

A: Both designations refer to 8-pin ceramic or plastic dual inline packages with 0.300" (7.62mm) pitch. The functional and electrical characteristics remain identical. The primary distinction is material composition and supplier device package designation. Both are suitable for through-hole PCB assembly.

Q: Does the operating temperature range difference affect substitution?

A: The TC7660MJA operates from -55°C to 125°C, while the TC7660EPA operates from -40°C to 85°C. Substitution is valid for applications operating within the -40°C to 85°C range. Applications requiring extended temperature operation below -40°C or above 85°C must retain the TC7660MJA or identify alternative solutions.

Q: Are both parts RoHS compliant?

A: Yes. Both the TC7660MJA and TC7660EPA are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). Both maintain REACH Unaffected status.

Q: Why is the TC7660MJA classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The TC7660EPA, as the active equivalent, is the recommended path for new designs and ongoing system support.