MCP1791T-3302E/DC Microchip Integrated Circuit (SOT223 (5-Pin)) In Stock
The MCP1791T-3302E/DC is a fixed 3.3 V LDO linear voltage regulator from Microchip, delivering 70 mA output current from a 6 V to 30 V input with 0.7 V typical dropout voltage. It provides tight ±2.5% output accuracy and an absolute maximum input of 48 V for robust protection against transient overvoltage. Packaged in a 6-pin SOT-223 for efficient heat dissipation in space-constrained designs.
- Manufacturer
- Microchip
- Package
- SOT223 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- MCP1791T-3302E/DC Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.5100(MOQ 4000)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output with ±2.5% accuracy and 70 mA current capability from a wide 6 V to 30 V input supply
- 0.7 V typical dropout voltage and 48 V absolute maximum input rating for transient-tolerant 3.3 V rail generation
- 6-pin SOT-223 package with thermal tab for low-resistance heat dissipation in compact industrial and automotive power designs
Applications
The MCP1791T-3302E/DC is ideal for generating a stable 3.3 V rail from 12 V or 24 V bus voltages in industrial sensors, automotive accessories, and embedded controller boards where a simple LDO replaces a switching regulator for low-noise applications. Its wide 6 V to 30 V input range and 48 V transient tolerance make it robust in automotive environments subject to load dump and inductive spikes. The SOT-223 package with thermal tab enables compact PCB footprints while safely dissipating the power from high input-to-output differential at 70 mA load.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-5 |
| YTEOL | 0 |
| 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 | 0.0396% |
| Load Regulation-Max | 0.01485% |
| 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 | 3.3825V |
| Output Voltage1-Min | 3.2175V |
| Output Voltage1-Nom | 3.3V |
| 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 | Taiwan, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does MCP1791T-3302E/DC accept for 3.3 V output regulation?
The MCP1791T-3302E/DC accepts 6 V to 30 V input with an absolute maximum of 48 V, making it suitable for 12 V and 24 V automotive and industrial supply rails while tolerating inductive load dump transients without device damage.
How does MCP1791T-3302E/DC's 0.7 V typical dropout benefit near-threshold applications?
With a 0.7 V nominal dropout voltage, the MCP1791T-3302E/DC maintains a regulated 3.3 V output when the input falls as low as approximately 4 V, extending useful regulation range in battery-backup and brownout scenarios at 70 mA maximum load.
For which automotive or industrial circuit designs is MCP1791T-3302E/DC a practical 3.3 V rail solution?
The MCP1791T-3302E/DC suits 3.3 V supply generation for microcontrollers, sensors, and communication ICs in automotive body modules, industrial PLCs, and smart meters powered from 12 V or 24 V buses, where low noise and ±2.5% regulation accuracy are priorities.
What thermal management advantage does the SOT-223 package offer the MCP1791T-3302E/DC in high-differential designs?
The 6-pin SOT-223 package includes a large thermal tab connected to the output pin, allowing direct heat conduction to PCB copper pours and reducing junction temperature when dissipating power from high input-to-output differential at the 70 mA rated output current.
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