MCP1703AT-3302E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
The MCP1703AT-3302E/DB is a fixed 3.3 V LDO linear voltage regulator with low quiescent current and high input voltage tolerance up to 16 V, featuring a maximum dropout voltage of 0.725 V, housed in SOT-223-3 package for automotive and industrial power supply designs.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703AT-3302E/DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4463(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1703AT-3302E/DB?
- Fixed 3.3 V output with input voltage range from 4.091 V to 16 V
- Low dropout voltage: 0.525 V nominal, 0.725 V maximum for efficient regulation
- High input voltage capability up to 16 V absolute maximum (18 V absolute)
- Low quiescent current (Iq) for battery-powered and low-power applications
- SOT-223-3 surface-mount package with thermal pad for heat dissipation
What is MCP1703AT-3302E/DB used for?
The MCP1703AT-3302E/DB is suitable for post-regulation in automotive, industrial, and embedded systems where the input rail can range up to 16 V and a stable 3.3 V output is needed. Its low quiescent current makes it an efficient choice for always-on supply rails in sleep-mode-heavy IoT nodes and automotive telematics modules where standby power consumption must be minimized.
What are the specifications of MCP1703AT-3302E/DB?
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 7Weeks |
| 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-G4 |
| 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 | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| 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 | 2.3mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Tolerance-Max | 3% |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Taiwan, Thailand |
Where can I find the MCP1703AT-3302E/DB datasheet?
MCP1703AT-3302E/DB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1703AT-3302E/DB?
Compatible alternatives and drop-in replacements for MCP1703AT-3302E/DB:
Regulator, 3.3V, 0.725V Dropout, CMOS, PDSO3
Frequently Asked Questions
What input voltage range does MCP1703AT-3302E/DB support, and how does dropout affect efficiency?
MCP1703AT-3302E/DB accepts input voltages from 4.091 V to 16 V, with an absolute maximum of 18 V. The nominal dropout voltage is 0.525 V and the maximum is 0.725 V, meaning the device continues to regulate a clean 3.3 V output even when the input drops close to that threshold, which is advantageous in automotive 12 V rail applications with supply fluctuations.
How suitable is MCP1703AT-3302E/DB for automotive 12 V rail applications given its voltage rating?
MCP1703AT-3302E/DB is rated for input voltages up to 16 V continuous and 18 V absolute maximum, making it directly compatible with nominal 12 V automotive supply rails that can spike during load dump or alternator overvoltage events. The fixed 3.3 V output serves microcontrollers, sensors, and CAN transceivers without requiring additional protection components in many standard automotive designs.
What thermal and package considerations apply when using MCP1703AT-3302E/DB in higher-current designs?
The SOT-223-3 package includes a tab that acts as a thermal pad, enabling heat dissipation to the PCB copper pour. At a 3.3 V output from a 12 V input, the regulator dissipates up to 8.7 V across the pass element, so designers must calculate junction temperature using the device's thermal resistance (°C/W) and ensure copper area is sufficient to keep junction temperature below the rated maximum at the required output current.
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| Qty. | Unit Price | Ext. Price |
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