MCP1791T-3002E/DC Microchip Integrated Circuit (SOT223 (5-Pin)) In Stock
MCP1791T-3002E/DC is a 70 mA low dropout (LDO) voltage regulator with a fixed 3.0 V output, accepting input voltages from 6 V to 30 V with a maximum dropout of 1.3 V. Housed in a compact 5-pin SOT-223 package, it offers wide input range for industrial applications. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT223 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1791T-3002E/DC Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5940(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1791T-3002E/DC?
- Fixed 3.0 V output with low dropout voltage of 0.7 V nominal (1.3 V max), enabling efficient regulation from inputs as low as 6 V
- Wide input voltage range of 6 V to 30 V with 48 V absolute maximum, suitable for rugged industrial power rails
- Compact 5-pin SOT-223 package with 70 mA output current for space-constrained PCB designs
What is MCP1791T-3002E/DC used for?
The MCP1791T-3002E/DC is well-suited for industrial control systems, automotive accessories, and sensor conditioning circuits that require a stable 3.0 V supply from higher-voltage rails up to 30 V. Its low quiescent current and wide input range make it ideal for battery-backed or unregulated DC bus applications. It also suits microcontroller power supply rails in embedded systems where a compact footprint is critical.
What are the specifications of MCP1791T-3002E/DC?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-5 |
| YTEOL | 3 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.3V |
| Dropout Voltage1-Nom | 0.7V |
| Input Voltage Absolute-Max | 48V |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 6V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.036% |
| Load Regulation-Max | 0.0135% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.07A |
| Output Voltage1-Max | 3.075V |
| Output Voltage1-Min | 2.925V |
| Output Voltage1-Nom | 3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223-5 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2.5% |
| Package | SOT223 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP1791T-3002E/DC datasheet?
MCP1791T-3002E/DC Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1791T-3002E/DC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output current the MCP1791T-3002E/DC can deliver, and what dropout voltage should designers budget?
The MCP1791T-3002E/DC delivers up to 70 mA of output current. Its nominal dropout voltage is 0.7 V, with a maximum of 1.3 V, so the input must remain at least 1.3 V above the 3.0 V regulated output to maintain full regulation under worst-case conditions.
Which input voltage range can the MCP1791T-3002E/DC tolerate in an industrial 24 V bus environment?
The device accepts input voltages from 6 V to 30 V continuously, with an absolute maximum of 48 V for transient protection. This makes it directly compatible with a nominal 24 V industrial bus, providing a stable 3.0 V output with good margin against typical bus fluctuations of ±20%.
How does the 5-pin SOT-223 package of the MCP1791T-3002E/DC compare to a standard 3-pin SOT-223 in thermal dissipation?
The 5-pin SOT-223 adds a redundant exposed tab pin that improves thermal conduction to the PCB copper pour, reducing junction-to-board thermal resistance compared to a 3-pin SOT-223. At 70 mA and a 27 V input-output differential, this thermal path helps keep the device within its operating temperature limits without an external heatsink.
When is the MCP1791T-3002E/DC a suitable replacement for a 78L03 regulator in a 24 V system?
The MCP1791T-3002E/DC is preferable to the 78L03 when the input exceeds 15 V, because its 30 V rated input (48 V abs. max) and 1.3 V max dropout comfortably handle 24 V rails where the 78L03 is often over-stressed. Its SOT-223 footprint also dissipates heat more effectively than a TO-92 package for the same 70 mA load current.
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