MCP1703-4002E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
The MCP1703-4002E/DB is a fixed 4 V low dropout linear voltage regulator from Microchip with 250 mA output current and 525 mV typical dropout voltage. It accepts 2.7 V to 16 V input and regulates to 4 V within ±0.4% accuracy in a 3-pin SOT-223 package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703-4002E/DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5600(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1703-4002E/DB?
- 250 mA output current with only 525 mV typical dropout enabling efficient regulation from moderately higher input voltages
- Fixed 4 V output with ±0.4% accuracy providing stable, precise supply rails for analog and mixed-signal circuits
- Wide 2.7 V to 16 V input range accommodating diverse power sources including automotive, industrial, and battery supplies
- SOT-223 package with exposed thermal pad offering better heat dissipation than SOT-23 for higher load currents
What is MCP1703-4002E/DB used for?
The MCP1703-4002E/DB is suited for post-regulation of switching supplies and battery-powered systems requiring a stable 4 V rail for microcontrollers, sensors, and RF modules. Its wide input range and low dropout make it effective in automotive accessories and industrial instrumentation operating from unregulated 12 V or higher bus voltages. The SOT-223 package also handles moderate load currents in compact designs without a separate heatsink.
What are the specifications of MCP1703-4002E/DB?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.725V |
| Dropout Voltage1-Nom | 0.525V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 4.725V |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.1353% |
| Load Regulation-Max | 0.1% |
| 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 | 4.08V |
| Output Voltage1-Min | 3.92V |
| Output Voltage1-Nom | 4V |
| 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 MCP1703-4002E/DB datasheet?
MCP1703-4002E/DB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1703-4002E/DB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage and accuracy of the MCP1703-4002E/DB?
The MCP1703-4002E/DB provides a fixed 4 V output with ±0.4% regulation accuracy. This tight tolerance ensures consistent supply voltage for precision analog circuits, RF modules, and microcontrollers that require a stable power rail across varying load and temperature conditions, making it suitable for both commercial and light industrial applications.
What is the dropout voltage of the MCP1703-4002E/DB?
The MCP1703-4002E/DB has a nominal dropout voltage of 525 mV and a maximum of 725 mV at full 250 mA load. This means the input supply must be at least 4.525 V (nominal) to maintain regulation at the full rated output current. The low dropout characteristic is beneficial in battery-powered systems where the supply voltage may sag close to the regulated output level.
What input voltage range does the MCP1703-4002E/DB support?
The MCP1703-4002E/DB accepts input voltages from 4.725 V minimum (to maintain regulation) up to 16 V maximum, with an absolute maximum of 18 V. This broad range makes it compatible with a wide variety of power sources, including 12 V automotive batteries, 9 V DC wall adapters, regulated 5 V rails, and multi-cell lithium battery packs.
What package does the MCP1703-4002E/DB use?
The MCP1703-4002E/DB uses a 3-pin SOT-223 package. Compared to the smaller SOT-23, the SOT-223 has a larger thermal pad on the back that is soldered to the PCB, providing significantly better thermal dissipation. This allows the device to handle the full 250 mA output current without overheating in typical ambient conditions.
What is the factory lead time for the MCP1703-4002E/DB?
The factory lead time for the MCP1703-4002E/DB is approximately 7 weeks for orders placed directly with the factory. However, stock is often available through authorized distributors such as Digi-Key, Mouser, and Arrow, where the device can typically be shipped immediately. Always check current distributor inventory for the fastest delivery option.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8400 | $0.84 |
| 25+ | $0.7000 | $17.50 |
| 100+ | $0.6400 | $64.00 |
| 1000+ | $0.5900 | $590.00 |
| 5000+ | $0.5600 | $2800.00 |
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