TC1220ECHTR Equivalent & Substitute Parts

Part Overview

The TC1220ECHTR 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 ratiometric regulator with a single output delivering 25mA maximum current in a compact SOT-23-6 surface mount package.

The TC1220ECHTR is classified as obsolete. Identifying suitable substitute components is essential for ongoing system support, design updates, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

TC1220ECHTR

Microchip TechnologyIn Stock: 2890TC1220ECHTR Datasheet

Current PartRFQ

LM2664M6/NOPB

Texas InstrumentsIn Stock: 35494LM2664M6/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC1220ECHTR is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Topology: Charge Pump (fixed requirement)
• Output Configuration: Positive or Negative (fixed requirement)
• Output Type: Fixed (fixed requirement)
• Number of Outputs: 1 (fixed requirement)
• Voltage - Output: -Vin, 2Vin (fixed requirement)
• Input voltage range overlap: Minimum 2.5V to maximum 5.5V
• Operating temperature range: -40°C ~ 85°C

Mechanical Compatibility Requirements:

• Package / Case: SOT-23-6 (fixed requirement for direct pin-compatible substitution)
• Mounting Type: Surface Mount

Performance Considerations:

• Current - Output: Substitute must meet or exceed 25mA requirement
• Frequency - Switching: Not a limiting factor for substitution

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The LM2664M6/NOPB qualifies as a direct substitute based on matching all fixed electrical and mechanical parameters while providing enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The LM2664M6/NOPB is a qualified substitute for the TC1220ECHTR based on the following engineering criteria:

Functional Equivalence: Both devices implement identical charge pump topology with fixed positive or negative output configuration, single output, and matching voltage output options (-Vin, 2Vin).

Package Compatibility: Both components use SOT-23-6 surface mount packaging, enabling direct PCB layout compatibility without redesign.

Electrical Specifications: The LM2664M6/NOPB meets all minimum electrical requirements of the TC1220ECHTR. The substitute provides 40mA output current capacity, exceeding the 25mA requirement. Input voltage range compatibility is maintained within the 2.5V to 5.5V operating window.

Compliance Status: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and supply chain compatibility.

Product Availability: The LM2664M6/NOPB is actively manufactured by Texas Instruments with substantial inventory availability (35,400 pcs), providing long-term procurement security compared to the obsolete TC1220ECHTR.

Operating Conditions: Identical operating temperature range (-40°C ~ 85°C) ensures thermal performance equivalence across specified environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the LM2664M6/NOPB directly replace the TC1220ECHTR without PCB modifications?

A: Yes. Both devices use identical SOT-23-6 packaging with matching pin configurations. Direct substitution on existing PCBs is possible without layout changes.

Q: What are the key differences between these two parts?

A: The LM2664M6/NOPB provides higher output current (40mA vs. 25mA), operates at a higher switching frequency (80kHz vs. 35kHz), and supports a lower minimum input voltage (1.8V vs. 2.5V). All other electrical and mechanical specifications are equivalent.

Q: Is the higher output current of the LM2664M6/NOPB a concern for my application?

A: No. Higher output current capacity is a performance enhancement that does not create compatibility issues. The substitute will operate correctly in applications designed for the 25mA TC1220ECHTR.

Q: Does the higher switching frequency of the LM2664M6/NOPB affect circuit performance?

A: The higher switching frequency (80kHz vs. 35kHz) may reduce output ripple and improve transient response. This is a performance improvement. No circuit modifications are required for substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both the TC1220ECHTR and LM2664M6/NOPB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the moisture sensitivity level for both parts?

A: Both parts have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Q: Why is the TC1220ECHTR obsolete?

A: The TC1220ECHTR is classified as obsolete by Microchip Technology. The LM2664M6/NOPB remains in active production, providing a viable long-term alternative for new designs and ongoing system support.

Q: Can I use the LM2664M6/NOPB in applications requiring the full 2.5V minimum input voltage specification?

A: Yes. The LM2664M6/NOPB supports input voltages down to 1.8V, which exceeds the 2.5V minimum requirement of the TC1220ECHTR. Full compatibility is maintained across the specified input voltage range.