MIC5259-2.5BML-TR Equivalent & Substitute Parts

Part Overview

The MIC5259-2.5BML-TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed output applications. This device delivers 300mA output current with a fixed 2.5V output and operates across an input voltage range up to 6V. The regulator features integrated protection mechanisms including over-current, over-temperature, and under-voltage lockout (UVLO) protection, making it suitable for low-power supply applications requiring stable voltage regulation.

The MIC5259-2.5BML-TR is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	2.5V
Voltage - Input (Max)	6V
Current - Output	300mA
Voltage Dropout (Max)	0.55V @ 300mA
Current - Quiescent (Iq)	150 µA
Package / Case	6-VDFN Exposed Pad, 6-MLF®
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C
Control Features	Enable
Protection Features	Over Current, Over Temperature, Under Voltage Lockout (UVLO)

Substitute Part Grouping Explanation

Substitute parts for the MIC5259-2.5BML-TR are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Output voltage: 2.5V fixed
Maximum output current: 300mA
Maximum input voltage: 6V
Voltage dropout: 0.55V @ 300mA
Package type: 6-VDFN Exposed Pad, 6-MLF®
Mounting type: Surface Mount
Operating temperature range: -40°C ~ 125°C
Protection features: Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Control features: Enable function

The MIC5259-2.5YML-TR meets all electrical and mechanical requirements for direct substitution with the MIC5259-2.5BML-TR.

Parameter Comparison

Parameter	MIC5259-2.5BML-TR	MIC5259-2.5YML-TR
Manufacturer	Microchip Technology	Microchip Technology
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Voltage - Output (Min/Fixed)	2.5V	2.5V
Voltage - Input (Max)	6V	6V
Current - Output	300mA	300mA
Voltage Dropout (Max)	0.55V @ 300mA	0.55V @ 300mA
Current - Quiescent (Iq)	150 µA	150 µA
Current - Supply (Max)	250 µA	250 µA
PSRR	65dB ~ 53dB (10Hz ~ 10kHz)	65dB ~ 53dB (10Hz ~ 10kHz)
Control Features	Enable	Enable
Protection Features	Over Current, Over Temperature, Under Voltage Lockout (UVLO)	Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	6-VDFN Exposed Pad, 6-MLF®	6-VDFN Exposed Pad, 6-MLF®
Supplier Device Package	6-DFN (2x2)	6-DFN (2x2)
Product Status	Discontinued at DiGi Electronics	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The MIC5259-2.5YML-TR is the direct substitute for the MIC5259-2.5BML-TR. Both parts share identical electrical specifications and package configurations, ensuring pin-for-pin compatibility and functional equivalence.

The primary distinction between these parts is product status and regulatory compliance. The MIC5259-2.5BML-TR is discontinued, while the MIC5259-2.5YML-TR maintains active product status with current availability. Additionally, the MIC5259-2.5YML-TR carries ROHS3 compliance, whereas the MIC5259-2.5BML-TR is RoHS non-compliant. For applications requiring RoHS compliance or long-term component availability, the MIC5259-2.5YML-TR is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the MIC5259-2.5YML-TR directly replace the MIC5259-2.5BML-TR?

A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical parameters, output voltage, current ratings, dropout voltage, protection features, and package configuration. No circuit modifications are required for substitution.

Q: Are there any package differences between these parts?

A: No. Both the MIC5259-2.5BML-TR and MIC5259-2.5YML-TR use the 6-VDFN Exposed Pad, 6-MLF® package with 6-DFN (2x2) supplier device package designation. Pin assignments and mechanical dimensions are identical.

Q: What is the difference between the "-BML" and "-YML" suffixes?

A: The suffix designates the tape and reel packaging variant. Both parts are supplied in Tape & Reel (TR) format. The functional and electrical characteristics remain identical between these packaging variants.

Q: Why is the MIC5259-2.5BML-TR discontinued?

A: The MIC5259-2.5BML-TR is discontinued at DiGi Electronics. The MIC5259-2.5YML-TR remains in active production and is the recommended substitute for new designs and component replenishment.

Q: Does the MIC5259-2.5YML-TR meet RoHS requirements?

A: Yes. The MIC5259-2.5YML-TR is ROHS3 compliant. If RoHS compliance is a design requirement, this part satisfies that specification.

Q: Are the quiescent current and PSRR specifications identical?

A: Yes. Both parts specify 150 µA quiescent current and 65dB ~ 53dB PSRR across the 10Hz ~ 10kHz frequency range.

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