MCP1703-2502E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
Microchip MCP1703-2502E/DB is a fixed 2.5 V, 250 mA low-dropout voltage regulator accepting 2.7 V to 16 V input with a typical dropout of 0.75 V in a 4-pin SOT-223 package. It offers ±2% output accuracy for precision analog and digital rails. Available lead-free with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703-2502E/DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1700(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1703-2502E/DB?
- Fixed 2.5 V output with ±2% accuracy delivering stable reference voltage for ADC and sensor supply rails
- Low dropout voltage of 0.75 V typical enabling efficient regulation from 3.3 V or 5 V input rails down to 2.5 V
- Wide 2.7 V to 16 V input range covering automotive, industrial 12 V bus, and battery-powered system inputs
- 250 mA output current in a 4-pin SOT-223 package with exposed tab for enhanced heat dissipation
- Lead-free, RoHS-compliant construction suitable for industrial and consumer embedded designs
What is MCP1703-2502E/DB used for?
The MCP1703-2502E/DB is well suited for generating stable 2.5 V supply rails for precision ADCs, DACs, and analog sensors in industrial data acquisition systems and automotive electronics operating from 12 V bus voltages. Its 250 mA current rating covers most microcontroller and mixed-signal peripheral supply requirements in portable instruments. The SOT-223 package with its exposed thermal tab allows efficient heat removal when the regulator is handling the full load current continuously.
What are the specifications of MCP1703-2502E/DB?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.1V |
| Dropout Voltage1-Nom | 0.75V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 3.6V |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.093% |
| Load Regulation-Max | 0.0625% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.25A |
| Output Voltage1-Max | 2.55V |
| Output Voltage1-Min | 2.45V |
| Output Voltage1-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Packing Method | TUBE |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.3mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2% |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Taiwan, Thailand |
Where can I find the MCP1703-2502E/DB datasheet?
MCP1703-2502E/DB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1703-2502E/DB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage accuracy and dropout voltage of the MCP1703-2502E/DB?
The MCP1703-2502E/DB provides a fixed 2.5 V output with ±2% accuracy across line and load conditions. Its typical dropout voltage is 0.75 V, with a maximum of 1.1 V, meaning the input must be at least 3.6 V for full regulation. This low dropout makes it efficient when converting from 3.3 V or 5 V bus rails to the 2.5 V output.
What input voltage range can the MCP1703-2502E/DB handle, and which power sources are compatible?
The MCP1703-2502E/DB accepts input voltages from 2.7 V to 16 V, with an absolute maximum of 18 V. This wide range covers single-cell Li-ion batteries (3.7 V nominal), regulated 5 V USB rails, 9 V PP3 batteries, and 12 V automotive or industrial bus voltages, making it versatile across portable, benchtop, and vehicle-mounted applications.
How much output current can the MCP1703-2502E/DB supply, and what loads does this serve?
The MCP1703-2502E/DB delivers up to 250 mA of continuous output current at 2.5 V. This is sufficient for powering microcontrollers drawing 50-150 mA, precision reference ICs, 12-bit ADCs, and analog sensor modules. In mixed-signal boards, 250 mA can simultaneously power the analog supply plane and several peripheral ICs without requiring a separate high-current regulator.
What package does the MCP1703-2502E/DB use, and how does it handle thermal dissipation?
The MCP1703-2502E/DB comes in a 4-pin SOT-223 package, which includes a large exposed metal tab soldered to a PCB copper pour for thermal spreading. At maximum load with a 12 V input and 2.5 V output, the LDO dissipates up to 2.375 W, so the SOT-223 tab-to-PCB thermal path is critical for keeping junction temperature below the maximum rated limit.
When would an engineer select the MCP1703-2502E/DB instead of a switching regulator for generating 2.5 V?
An engineer would choose the MCP1703-2502E/DB when input-to-output voltage differential is small (less than 2 V) and the load is under 250 mA, making LDO efficiency comparable to a switcher while avoiding switching noise. Precision analog circuits, low-EMI medical instruments, and audio analog rails benefit from the LDO's inherently noise-free linear regulation versus the kilohertz-range switching harmonics of a DC-DC converter.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1700 | $0.17 |
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