MIC37252WU-TR Equivalent & Substitute Parts

Part Overview

The MIC37252WU-TR is a linear voltage regulator IC from Microchip Technology, classified as a positive adjustable power management component. This device delivers 2.5A output current with adjustable voltage output ranging from 1.24V to 5.5V, housed in a TO-263-5 surface mount package. The part is currently active in production and maintains full ROHS3 compliance with REACH unaffected status. Substitute parts are identified to address inventory availability, extended operating temperature ranges, or enhanced electrical performance characteristics within the allowed parameter specifications.

Key Parameters

Parameter	MIC37252WU-TR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	6V
Voltage - Output (Min/Fixed)	1.24V
Voltage - Output (Max)	5.5V
Current - Output	2.5A
Voltage Dropout (Max)	1V @ 2.5A
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-5
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MIC37252WU-TR are qualified based on the following electrical and mechanical compatibility criteria:

Output Configuration & Type: Both substitute parts maintain positive adjustable output configuration with single regulator topology, matching the primary device.

Voltage Parameters: Substitute parts support the MIC37252WU-TR output voltage range (1.24V minimum to 5.5V maximum) within their broader specifications. The LT1764 series devices accommodate output voltages from 1.21V to 20V, encompassing the required range.

Current Output: Substitute parts deliver 3A output current, exceeding the 2.5A requirement of the primary device, providing design margin.

Voltage Dropout: The LT1764 series specifies 0.66V dropout at 3A, performing better than the 1V dropout specification of the MIC37252WU-TR at 2.5A.

Control & Protection Features: All devices include Enable control feature and Over Current, Over Temperature, and Reverse Polarity protection.

Package Compatibility: All parts use TO-263-5 package configuration (D2PAK with 5 leads plus tab), ensuring mechanical and electrical pin compatibility.

Compliance & Status: All substitute parts maintain ROHS3 compliance and active product status.

Parameter Comparison

Parameter	MIC37252WU-TR	LT1764AMPQ#PBF	LT1764EQ#PBF
Manufacturer	Microchip Technology	Analog Devices Inc.	Analog Devices Inc.
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Number of Regulators	1	1	1
Voltage - Input (Max)	6V	20V	20V
Voltage - Output (Min/Fixed)	1.24V	1.21V	1.21V
Voltage - Output (Max)	5.5V	20V	20V
Current - Output	2.5A	3A	3A
Voltage Dropout (Max)	1V @ 2.5A	0.66V @ 3A	0.66V @ 3A
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-5	DDPAK-5	DDPAK-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both LT1764AMPQ#PBF and LT1764EQ#PBF qualify as functional substitutes for the MIC37252WU-TR based on electrical parameter compatibility and mechanical package equivalence.

LT1764AMPQ#PBF supports extended operating temperature range from -55°C to 125°C, providing broader environmental coverage compared to the -40°C to 125°C specification of the primary device. This part carries Moisture Sensitivity Level 1 (Unlimited), indicating superior moisture tolerance. Inventory availability is 7024 units.

LT1764EQ#PBF maintains the identical -40°C to 125°C operating temperature range as the MIC37252WU-TR, ensuring direct thermal specification alignment. This part also carries Moisture Sensitivity Level 1 (Unlimited). Inventory availability is 2125 units.

Both substitute parts maintain ROHS3 compliance and active product status. All three devices are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can LT1764AMPQ#PBF or LT1764EQ#PBF directly replace MIC37252WU-TR in existing designs?

A: Both LT1764 variants are electrically and mechanically compatible substitutes. The TO-263-5 package pinout and adjustable output voltage configuration match the primary device. Output current capability (3A) exceeds the 2.5A requirement, and voltage dropout performance is superior. No circuit redesign is required for substitution within the specified operating parameters.

Q: What is the difference between LT1764AMPQ#PBF and LT1764EQ#PBF?

A: The primary difference is operating temperature range. LT1764AMPQ#PBF operates from -55°C to 125°C, while LT1764EQ#PBF operates from -40°C to 125°C. Both devices are otherwise electrically identical with matching output current (3A), voltage dropout (0.66V @ 3A), and protection features. Selection depends on application temperature requirements.

Q: Are the package designations TO-263-5 and DDPAK-5 equivalent?

A: Yes. TO-263-5 and DDPAK-5 refer to the same physical package configuration: a surface mount D2PAK package with 5 leads plus a thermal tab. Pin assignments and mechanical dimensions are identical across all three devices.

Q: What are the key electrical advantages of the LT1764 series over the MIC37252WU-TR?

A: The LT1764 series provides higher maximum input voltage (20V vs. 6V), higher maximum output voltage (20V vs. 5.5V), superior voltage dropout performance (0.66V @ 3A vs. 1V @ 2.5A), and higher output current capability (3A vs. 2.5A). These characteristics provide greater design flexibility and efficiency in applications requiring higher input or output voltage levels.

Q: Are all three devices ROHS3 compliant?

A: Yes. MIC37252WU-TR, LT1764AMPQ#PBF, and LT1764EQ#PBF all maintain ROHS3 compliance and REACH unaffected status.

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