MCP1703AT-3302E/CB Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
Microchip MCP1703AT-3302E/CB is a fixed 3.3V LDO linear voltage regulator in a 3-pin SOT-23A package, accepting input voltages from 4.09V to 16V with a typical dropout of 525mV. It delivers regulated output for low-power embedded systems. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703AT-3302E/CB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4510(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1703AT-3302E/CB?
- Fixed 3.3V regulated output from input range 4.09V to 16V for wide supply compatibility
- Low typical dropout voltage of 525mV enables operation from nearly depleted 4V supplies
- Compact 3-pin SOT-23A package for space-constrained battery-powered designs
- Maximum input voltage of 16V allows direct connection to unregulated wall adapters and automotive rails
- Simple fixed-output design requires minimal external components for fast integration
What is MCP1703AT-3302E/CB used for?
The MCP1703AT-3302E/CB suits portable battery-powered devices, IoT sensor nodes, and microcontroller supply rails where a compact 3.3V LDO from an unregulated adapter or Li-ion battery pack is required. With its 16V maximum input and 525mV dropout, it can serve automotive accessories and industrial sensor circuits that need a clean 3.3V from higher-voltage rails. The tiny SOT-23A footprint integrates easily into space-constrained PCB designs alongside low-power MCUs.
What are the specifications of MCP1703AT-3302E/CB?
| Manufacturer Package Code | SOT-23A-3 |
| Factory Lead Time | 6Weeks |
| YTEOL | 13 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.725V |
| Dropout Voltage1-Nom | 0.525V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 4.091V |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.1178991% |
| Load Regulation-Max | 0.0825% |
| 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 | 3.399V |
| Output Voltage1-Min | 3.201V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Tolerance-Max | 3% |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Taiwan, Thailand |
Where can I find the MCP1703AT-3302E/CB datasheet?
MCP1703AT-3302E/CB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1703AT-3302E/CB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range and dropout voltage of the MCP1703AT-3302E/CB?
The MCP1703AT-3302E/CB accepts input voltages from 4.091V minimum to 16V maximum, with a typical dropout voltage of 525mV and a worst-case maximum dropout of 725mV. This low dropout characteristic allows the regulator to maintain a steady 3.3V output even when powered from a nearly discharged 4V Li-ion cell.
Can the MCP1703AT-3302E/CB be used directly in automotive or 12V adapter-powered designs?
Yes. With a 16V maximum input voltage (and 18V absolute maximum), the MCP1703AT-3302E/CB can be connected directly to a 12V automotive rail or a standard 12V wall adapter, providing a regulated 3.3V output for microcontrollers and sensors without additional pre-regulation stages.
What external components are required to use the MCP1703AT-3302E/CB?
The MCP1703AT-3302E/CB is a fixed-output LDO that typically needs only input and output bypass capacitors, usually in the range of 1µF to 10µF, to ensure stability. No feedback resistors are needed for the fixed 3.3V version, reducing BOM cost and simplifying PCB layout.
How does the 3-pin SOT-23A package of MCP1703AT-3302E/CB affect PCB design options?
The SOT-23A is one of the smallest 3-pin SMD packages available, occupying roughly 1.4mm x 2.9mm of board space. This allows the MCP1703AT-3302E/CB to be placed very close to the load IC, minimizing trace inductance on the 3.3V supply rail and reducing susceptibility to noise in compact IoT and wearable designs.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7500 | $0.75 |
| 25+ | $0.7000 | $17.50 |
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| 1000+ | $0.4524 | $452.40 |
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