AN8003M Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The AN8003M is a linear voltage regulator IC manufactured by Panasonic Electronic Components, designed for positive fixed 3V output applications with 50mA current capacity. This device is classified as a Power Management (PMIC) component and is currently listed as obsolete. Due to its obsolete status and limited availability in new production, identifying functionally compatible substitute parts is essential for design continuity and procurement planning.

Substiute Parts

AN8003M

Panasonic Electronic ComponentsIn Stock: 1055AN8003M Datasheet

Current PartRFQ

MCP1824ST-3002E/DB

Microchip TechnologyIn Stock: 9753MCP1824ST-3002E/DB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AN8003M is determined by the following critical electrical and mechanical parameters:

• Output Voltage: Fixed 3V output is the primary functional requirement
• Output Current Capacity: Minimum 50mA required for circuit operation
• Input Voltage Range: Maximum input voltage tolerance of at least 20V
• Output Configuration: Positive fixed output topology
• Protection Features: Over current protection as baseline requirement
• Operating Temperature: Functional range of -30°C to 125°C
• Mounting Type: Surface mount compatibility
• Package Compatibility: Physical form factor considerations for PCB layout

The MCP1824ST-3002E/DB from Microchip Technology meets the core functional requirements of fixed 3V positive output with integrated protection features. While this substitute offers higher current capacity (300mA vs. 50mA) and enhanced protection features, it operates within compatible electrical parameters for applications requiring the AN8003M's 50mA specification.

Parameter Comparison

Engineering Selection Recommendations

The MCP1824ST-3002E/DB is suitable as a substitute for the AN8003M based on the following engineering criteria:

• Product Status: The MCP1824ST-3002E/DB maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete AN8003M.
• Compliance & Certifications: Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. The MCP1824ST-3002E/DB carries RoHS3 compliance and REACH unaffected status, meeting modern regulatory requirements.
• Electrical Compatibility: Both devices provide fixed 3V positive output with surface mount configuration. The substitute's higher current capacity (300mA) and enhanced protection features (Over Temperature, Short Circuit, UVLO) provide additional design margin without compromising the original 50mA application requirement.
• Package Consideration: The substitute uses SOT-223-3 packaging (TO-261-4, TO-261AA) versus the original TO-243AA (3-HSIP). PCB layout modifications are required to accommodate the different physical form factor.

Frequently Asked Questions (FAQ)

Q: Can the MCP1824ST-3002E/DB directly replace the AN8003M without circuit modifications?

A: Electrical substitution is valid for applications requiring 50mA or less at 3V fixed output. However, the different package form factor (SOT-223-3 vs. TO-243AA) requires PCB layout changes. Pin configuration must be verified against the specific application schematic.

Q: What is the significance of the lower maximum input voltage (6V vs. 20V) on the MCP1824ST-3002E/DB?

A: The substitute's 6V maximum input rating is lower than the AN8003M's 20V specification. Applications requiring input voltages exceeding 6V cannot use this substitute without additional input voltage regulation or protection circuitry.

Q: How do the protection features differ between these parts?

A: The AN8003M provides over current protection only. The MCP1824ST-3002E/DB includes over temperature, short circuit, and under voltage lockout (UVLO) protection, offering enhanced circuit protection in the substitute design.

Q: Is the higher quiescent current (220 µA vs. 1 mA) on the MCP1824ST-3002E/DB a concern?

A: The MCP1824ST-3002E/DB's quiescent current is actually lower (220 µA = 0.22 mA vs. 1 mA). This represents improved power efficiency in standby or low-load conditions.

Q: What packaging considerations apply when switching from AN8003M to MCP1824ST-3002E/DB?

A: The AN8003M uses 3-HSIP (TO-243AA) packaging, while the MCP1824ST-3002E/DB uses SOT-223-3 (TO-261-4, TO-261AA) packaging. These are physically different form factors requiring PCB redesign, footprint changes, and potential board space reallocation.

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

A: Both parts share identical ECCN and HTSUS classifications. The MCP1824ST-3002E/DB carries RoHS3 compliance and REACH unaffected status, meeting current environmental and regulatory standards applicable to electronic components.