TC105503ECTTR Equivalent & Substitute Parts

Part Overview

The TC105503ECTTR is a buck regulator positive output step-down DC-DC controller IC manufactured by Microchip Technology. This power management IC operates as a transistor driver with a single output phase and is designed for step-down voltage conversion applications. The device is currently in active product status with 854 units available in stock. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate different packaging or inventory requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

TC105503ECTTR

Microchip TechnologyIn Stock: 917TC105503ECTTR Datasheet

Current PartRFQ

TC105333ECTTR

Microchip TechnologyIn Stock: 1154TC105333ECTTR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The TC105503ECTTR has one parametric equivalent substitute: TC105333ECTTR. This substitution is valid based on strict electrical and mechanical parameter matching. Both parts share identical specifications across all critical substitution criteria:

Key Parameters for Substitution Validity:

• Output Type: Transistor Driver
• Function: Step-Down Buck Regulator Controller
• Output Configuration: Positive
• Topology: Buck
• Number of Outputs: 1
• Output Phases: 1
• Voltage Supply Range: 2.2V ~ 10V
• Switching Frequency: 300kHz
• Duty Cycle (Max): 100%
• Synchronous Rectifier: No
• Clock Sync: No
• Control Features: Enable
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package / Case: SC-74A, SOT-753
• Supplier Device Package: SOT-23-5
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The primary difference between these parts is packaging format: TC105503ECTTR is supplied in Tape & Reel (TR) format, while TC105333ECTTR is available in Cut Tape (CT) & Digi-Reel® format.

Parameter Comparison

Engineering Selection Recommendations

Both TC105503ECTTR and TC105333ECTTR are active products from Microchip Technology with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on packaging requirements and inventory availability:

TC105503ECTTR is appropriate when Tape & Reel (TR) packaging is required for automated assembly processes or when this specific packaging format is specified in procurement requirements.

TC105333ECTTR is appropriate when Cut Tape (CT) & Digi-Reel® packaging is acceptable or preferred, or when higher inventory availability is a consideration (1109 units versus 854 units).

Both parts maintain identical electrical performance, thermal characteristics, and regulatory compliance. The choice between them is determined by packaging logistics and supply chain requirements rather than functional or electrical differences.

Frequently Asked Questions (FAQ)

Q: Can TC105333ECTTR be used as a direct replacement for TC105503ECTTR?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, operating ranges, and package dimensions (SOT-23-5). The only difference is the packaging format: TC105503ECTTR uses Tape & Reel (TR) format, while TC105333ECTTR uses Cut Tape (CT) & Digi-Reel® format. If your assembly process accommodates either packaging format, direct substitution is valid.

Q: Are there any differences in performance or reliability between these two parts?

A: No. Both parts share identical electrical characteristics, switching frequency, duty cycle capability, temperature range, and control features. Performance and reliability are equivalent.

Q: What does the packaging format difference mean for my application?

A: Tape & Reel (TR) packaging is typically used for high-volume automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging is suitable for lower-volume production or manual assembly processes. The actual component and its performance are identical; only the delivery and handling format differs.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both TC105503ECTTR and TC105333ECTTR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which part should I choose if both are available?

A: Selection depends on your assembly process and packaging requirements. If your production line uses automated tape-fed equipment, TC105503ECTTR (Tape & Reel) is appropriate. If you use manual assembly or have equipment that accepts cut tape, TC105333ECTTR may be more suitable. Both are functionally and electrically identical.