TC110503ECTTR Equivalent & Substitute Parts

Part Overview

The TC110503ECTTR is a boost regulator positive output step-up DC-DC controller IC manufactured by Microchip Technology in SOT-23-5 surface mount packaging. This active product functions as a transistor driver for single-output boost topology applications with a supply voltage range of 2V to 10V and switching frequency between 100kHz and 300kHz. Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required, or when design flexibility across qualified component sources is needed for production continuity.

Substiute Parts

TC110503ECTTR

Microchip TechnologyIn Stock: 3271TC110503ECTTR Datasheet

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S-8355M50MC-MDJT2U

ABLIC Inc.In Stock: 953S-8355M50MC-MDJT2U Datasheet

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S-8356M50MC-MFJT2U

ABLIC Inc.In Stock: 3854S-8356M50MC-MFJT2U Datasheet

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S-8358B50MC-NRJT2U

ABLIC Inc.In Stock: 3117S-8358B50MC-NRJT2U Datasheet

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S-8358N50MC-O7JT2U

ABLIC Inc.In Stock: 1241S-8358N50MC-O7JT2U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC110503ECTTR are qualified based on the following core parameters that determine functional and mechanical compatibility:

Critical Matching Parameters:

• Output Type: Transistor Driver
• Function: Step-Up (Boost topology)
• Output Configuration: Positive
• Topology: Boost
• Number of Outputs: 1
• Package / Case: SC-74A, SOT-753
• Supplier Device Package: SOT-23-5
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C (TA)

Allowable Parameter Variations:

• Voltage - Supply (Vcc/Vdd): Substitute parts may operate at lower minimum voltages (0.9V) while maintaining the upper limit of 10V or higher
• Frequency - Switching: Substitute parts may operate at different fixed or variable frequencies (100kHz, 300kHz, 600kHz) within the boost controller design envelope
• Duty Cycle (Max): Substitute parts may have different maximum duty cycle ratings (85%, 90%, 92%)
• Control Features: Substitute parts may have Enable control as a minimum requirement; additional features such as Soft Start are not mandatory for substitution

All substitute parts are manufactured by ABLIC Inc., maintain ROHS3 compliance, MSL Level 1 rating, and active product status.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance with MSL Level 1 rating, ensuring regulatory and environmental qualification equivalence to the TC110503ECTTR.

S-8355M50MC-MDJT2U and S-8356M50MC-MFJT2U operate at fixed 300kHz switching frequency with 85% maximum duty cycle. S-8356M50MC-MFJT2U is available in Tape & Reel packaging matching the primary part format, while S-8355M50MC-MDJT2U is supplied in Cut Tape format.

S-8358B50MC-NRJT2U operates at 100kHz switching frequency with 90% maximum duty cycle, providing the closest frequency alignment to the lower end of the TC110503ECTTR range.

S-8358N50MC-O7JT2U operates at 600kHz switching frequency with 85% maximum duty cycle, suitable for applications requiring higher switching frequency operation.

All substitute parts support lower minimum supply voltage (0.9V) compared to the primary part (2V minimum), expanding operational flexibility in low-voltage applications. Control features are limited to Enable function in all substitutes; applications requiring Soft Start functionality must evaluate circuit-level implementation alternatives.

Frequently Asked Questions (FAQ)

Q: Can S-8355M50MC-MDJT2U, S-8356M50MC-MFJT2U, S-8358B50MC-NRJT2U, and S-8358N50MC-O7JT2U be used interchangeably with TC110503ECTTR?

A: These parts share identical boost topology, output configuration, package format, and operating temperature range. Substitution is valid when circuit design accommodates the specific switching frequency and maximum duty cycle of the selected alternative. Soft Start functionality present in TC110503ECTTR is not available in ABLIC substitutes.

Q: What is the impact of different switching frequencies on circuit design?

A: Switching frequency affects inductor and capacitor selection, electromagnetic interference characteristics, and power conversion efficiency. TC110503ECTTR operates across 100kHz to 300kHz range. Substitutes operate at fixed frequencies: S-8355M50MC-MDJT2U and S-8356M50MC-MFJT2U at 300kHz, S-8358B50MC-NRJT2U at 100kHz, and S-8358N50MC-O7JT2U at 600kHz. Circuit component values must be recalculated for each fixed-frequency alternative.

Q: Are there packaging differences between substitute parts?

A: S-8356M50MC-MFJT2U is supplied in Tape & Reel format matching TC110503ECTTR. S-8355M50MC-MDJT2U, S-8358B50MC-NRJT2U, and S-8358N50MC-O7JT2U are supplied in Cut Tape format. Both formats are compatible with standard surface mount assembly processes; packaging selection depends on production volume and handling requirements.

Q: What is the significance of the lower minimum supply voltage in ABLIC substitutes?

A: ABLIC substitutes operate from 0.9V minimum supply voltage compared to 2V for TC110503ECTTR. This allows operation in ultra-low-voltage applications. Designs operating above 2V supply voltage are unaffected by this parameter difference.

Q: How do maximum duty cycle differences affect substitution?

A: Maximum duty cycle determines the maximum voltage boost ratio achievable. TC110503ECTTR supports 92% duty cycle; S-8355M50MC-MDJT2U, S-8356M50MC-MFJT2U, and S-8358N50MC-O7JT2U support 85%, while S-8358B50MC-NRJT2U supports 90%. Applications requiring duty cycles above 90% must use TC110503ECTTR or S-8358B50MC-NRJT2U.

Q: Are all substitute parts RoHS and REACH compliant?

A: All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of TC110503ECTTR. Moisture sensitivity level is MSL 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions.