TC1017-2.8VLTTR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TC1017-2.8VLTTR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 2.8V output applications. This Surface Mount device in SC-70-5 packaging delivers 150mA output current with integrated over-current and over-temperature protection. The part is currently in active production status with 7532 units in stock inventory.

Substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from qualified equivalent devices that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	TC1017-2.8VLTTR
Output Voltage (Fixed)	2.8V
Output Current	150mA
Input Voltage (Max)	6V
Dropout Voltage (Max)	0.5V @ 150mA
Quiescent Current	90 µA
PSRR	58dB (1kHz)
Package / Case	5-TSSOP, SC-70-5, SOT-353
Operating Temperature Range	-40°C ~ 125°C
Control Features	Enable
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TC1017-2.8VLTTR is determined by the following critical parameters:

Fixed output voltage of 2.8V
Output current rating of 150mA
Surface Mount packaging in SC-70-5 (5-TSSOP, SOT-353)
Operating temperature range of -40°C ~ 125°C
Enable control feature and Over Current/Over Temperature protection
ROHS3 compliance and MSL Level 1 rating

All substitute parts listed maintain these core specifications. Variations in input voltage maximum, dropout voltage, quiescent current, and PSRR performance are permitted within the scope of parametric equivalency, as these parameters do not affect form-factor compatibility or basic functional operation at the specified output voltage and current.

Parameter Comparison

Parameter	TC1017-2.8VLTTR	MIC5365-2.8YC5-TR	MIC5366-2.8YC5-TR	MIC5375-2.8YC5-TR	MIC5376-2.8YC5-TR
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Output Voltage (Fixed)	2.8V	2.8V	2.8V	2.8V	2.8V
Output Current	150mA	150mA	150mA	150mA	150mA
Input Voltage (Max)	6V	5.5V	5.5V	5.5V	5.5V
Dropout Voltage (Max)	0.5V @ 150mA	0.31V @ 150mA	0.31V @ 150mA	0.2V @ 150mA	0.2V @ 150mA
Quiescent Current	90 µA	39 µA	39 µA	45 µA	45 µA
PSRR	58dB (1kHz)	80dB ~ 65dB (1kHz ~ 10kHz)	80dB ~ 65dB (1kHz ~ 10kHz)	60dB ~ 50dB (1kHz ~ 10kHz)	60dB ~ 50dB (1kHz ~ 10kHz)
Package / Case	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353
Operating Temperature Range	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Control Features	Enable	Enable	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature
Product Status	Active	Active	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	7532 Pcs In Stock	4050 Pcs In Stock	14231 Pcs In Stock	1109 Pcs In Stock	6696 Pcs In Stock

Engineering Selection Recommendations

Primary Selection (Active Status, Highest Inventory): MIC5366-2.8YC5-TR is the recommended substitute with 14231 units in stock and active product status. This part maintains full electrical and mechanical compatibility with the TC1017-2.8VLTTR while offering improved performance characteristics including lower dropout voltage (0.31V vs 0.5V) and reduced quiescent current (39 µA vs 90 µA).

Secondary Selection (Active Status, Performance Enhancement): MIC5376-2.8YC5-TR provides the lowest dropout voltage specification (0.2V @ 150mA) among active parts, with 6696 units available. This selection is appropriate for applications requiring minimal voltage headroom or extended battery life due to reduced quiescent current (45 µA).

Alternative Selection (Active Status, Lower Input Voltage): MIC5365-2.8YC5-TR offers equivalent performance to MIC5366-2.8YC5-TR with 4050 units in stock. Both parts feature identical electrical specifications and are suitable for direct substitution.

Not Recommended: MIC5375-2.8YC5-TR carries obsolete product status and should not be selected for new designs or long-term production applications despite adequate inventory (1109 units). Obsolete parts present supply chain risk and lack manufacturer support.

All recommended active-status substitutes maintain ROHS3 compliance, MSL Level 1 rating, and identical packaging specifications, ensuring direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can MIC5365-2.8YC5-TR, MIC5366-2.8YC5-TR, and MIC5376-2.8YC5-TR be used interchangeably with TC1017-2.8VLTTR?

A: Yes. All three parts are parametric equivalents with identical output voltage (2.8V), output current (150mA), package type (SC-70-5), operating temperature range (-40°C ~ 125°C), and protection features. They are direct pin-compatible substitutes suitable for PCB assembly without modification.

Q: What is the significance of the lower dropout voltage in MIC5365, MIC5366, and MIC5376 compared to TC1017?

A: The TC1017-2.8VLTTR specifies 0.5V dropout at 150mA, while MIC5365 and MIC5366 specify 0.31V, and MIC5376 specifies 0.2V. Lower dropout voltage reduces the minimum input voltage required to maintain regulated output, improving efficiency in battery-powered applications and reducing heat dissipation.

Q: Why is MIC5375-2.8YC5-TR listed but not recommended?

A: MIC5375-2.8YC5-TR carries obsolete product status, indicating the manufacturer no longer actively produces or supports this part. While inventory exists (1109 units), obsolete parts present long-term supply chain risk and lack manufacturer technical support. New designs should select from active-status alternatives.

Q: Are there packaging differences between these substitute parts?

A: All parts use identical SC-70-5 (5-TSSOP, SOT-353) Surface Mount packaging. No PCB layout or assembly process modifications are required when substituting between these parts.

Q: What is the difference between MIC5366-2.8YC5-TR and MIC5376-2.8YC5-TR?

A: Both parts are active-status equivalents with identical output voltage, current, and package specifications. MIC5376 offers superior dropout voltage performance (0.2V vs 0.31V) and slightly lower quiescent current (45 µA vs 39 µA). MIC5366 has higher inventory availability (14231 vs 6696 units). Selection depends on application requirements and supply availability.

Q: Do all substitute parts maintain the same compliance certifications as TC1017-2.8VLTTR?

A: Yes. All active-status substitute parts (MIC5365, MIC5366, MIC5376) are ROHS3 compliant with MSL Level 1 rating, matching the TC1017-2.8VLTTR specifications. MIC5375 also maintains these certifications but carries obsolete status.

Q: What input voltage range should be considered when selecting a substitute?

A: TC1017-2.8VLTTR accepts input up to 6V maximum. MIC5365, MIC5366, MIC5375, and MIC5376 all specify 5.5V maximum input. Applications requiring input voltages between 5.5V and 6V must retain the TC1017-2.8VLTTR or verify circuit design compatibility with the lower 5.5V specification of substitute parts.

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