MCP1701AT-1802I/MB Equivalent & Substitute Parts

Part Overview

The MCP1701AT-1802I/MB is an active linear voltage regulator IC from Microchip Technology, classified as a Power Management (PMIC) component. This device delivers a fixed 1.8V output at 110mA maximum current with a maximum dropout voltage of 0.3V at 20mA. The part is currently in active production status with 6100 units in stock. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying application requirements such as higher output current capacity or extended operating temperature ranges.

Substiute Parts

MCP1701AT-1802I/MB

Microchip TechnologyIn Stock: 6124MCP1701AT-1802I/MB Datasheet

Current PartRFQ

MCP1703AT-1802E/MB

Microchip TechnologyIn Stock: 1120MCP1703AT-1802E/MB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP1701AT-1802I/MB are identified based on the following critical parameters that determine functional compatibility:

• Output Voltage: Must be fixed at 1.8V
• Package Type: Must be TO-243AA (SOT-89-3) for mechanical and thermal compatibility
• Output Configuration: Must be positive fixed output
• Mounting Type: Must be surface mount
• Manufacturer: Microchip Technology (same manufacturer ensures design consistency and support)

The MCP1703AT-1802E/MB qualifies as a substitute because it maintains the same output voltage (1.8V), identical package format (TO-243AA/SOT-89-3), positive fixed output configuration, and surface mount technology. While this substitute offers enhanced specifications (200mA output current versus 110mA, extended temperature range to 125°C, and additional protection features), it remains mechanically and electrically compatible within the same footprint and functional category.

Parameter Comparison

Engineering Selection Recommendations

Both the MCP1701AT-1802I/MB and MCP1703AT-1802E/MB are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The MCP1703AT-1802E/MB represents an enhanced variant within the same product family, offering superior electrical performance characteristics including doubled output current capacity (200mA versus 110mA), higher maximum input voltage tolerance (16V versus 10V), extended operating temperature range (125°C versus 85°C junction temperature), and comprehensive protection features (over current and over temperature protection in addition to short circuit protection).

Selection between these parts should be based on application-specific current requirements and thermal operating conditions. The MCP1701AT-1802I/MB is suitable for applications with output current demands up to 110mA and operating temperatures within -40°C to 85°C. The MCP1703AT-1802E/MB is appropriate for applications requiring higher current delivery or operation in elevated temperature environments. Both parts maintain identical mechanical compatibility and output voltage specification, enabling direct substitution within the same PCB footprint.

Frequently Asked Questions (FAQ)

Q: Can the MCP1703AT-1802E/MB directly replace the MCP1701AT-1802I/MB on an existing PCB?

A: Yes. Both parts use the identical TO-243AA (SOT-89-3) package format and surface mount technology, ensuring mechanical and thermal compatibility on the same PCB layout without modification.

Q: What are the key differences between these two regulators?

A: The primary differences are output current capacity (110mA versus 200mA), maximum input voltage (10V versus 16V), operating temperature range (-40°C to 85°C versus -40°C to 125°C), and protection features. The MCP1703AT-1802E/MB includes over current and over temperature protection in addition to short circuit protection.

Q: Is the MCP1703AT-1802E/MB suitable for applications originally designed for the MCP1701AT-1802I/MB?

A: Yes, provided the application's current requirements do not exceed 110mA and the operating temperature remains within -40°C to 85°C. The MCP1703AT-1802E/MB will function correctly in these conditions and offers additional performance headroom and protection features.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications. Both maintain unlimited moisture sensitivity level (MSL 1).

Q: What output voltage options are available for these regulators?

A: Both the MCP1701AT-1802I/MB and MCP1703AT-1802E/MB are fixed output regulators delivering 1.8V. These parts are not adjustable output devices.

Q: Can these regulators be used in series or parallel configurations?

A: These are single output fixed voltage regulators designed for standalone operation. Series or parallel configurations are not supported by the device design or datasheet specifications.