MCP1801T-3302I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
Microchip MCP1801T-3302I/OT is a fixed 3.3 V, 150 mA low-dropout LDO linear regulator with 200 mV typical dropout and 10 V maximum input in SOT-23-5 package. Features high PSRR for clean power rails in noise-sensitive circuits. Ideal for powering microcontrollers, wireless modules, and sensor ICs from 4.5 V to 10 V supply rails.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1801T-3302I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4100(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output with 150 mA continuous load current capability
- 200 mV typical dropout voltage at full load for efficient power conversion close to output rail
- 10 V maximum input voltage accepting a wide range of unregulated supply sources
- High PSRR (Power Supply Rejection Ratio) suppressing input noise for sensitive analog and RF circuits
- SOT-23-5 package enabling minimal PCB footprint in space-constrained designs
- Industrial temperature rating from -40°C to +125°C for harsh environment applications
Applications
The MCP1801T-3302I/OT serves as a clean 3.3 V supply rail regulator in IoT sensor nodes, Bluetooth and Wi-Fi modules, and microcontroller boards powered from 5 V USB or unregulated battery packs. Its high PSRR ensures low-noise regulation for ADC references and RF front ends that are sensitive to supply ripple. The SOT-23-5 footprint and wide 4.3 V to 10 V input range also make it suitable for automotive accessory and industrial 24 V bus applications using a pre-regulator upstream.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 16Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.25V |
| Dropout Voltage1-Nom | 0.2V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 4.3V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.03762% |
| Load Regulation-Max | 0.05% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 3.366V |
| Output Voltage1-Min | 3.234V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2% |
| Package | SOT23 (5-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 | Japan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the MCP1801T-3302I/OT accept, and can it be used directly on a 5 V USB supply?
The MCP1801T-3302I/OT accepts input voltages from 4.3 V to 10 V, with a maximum absolute rating of 12 V, so it is fully compatible with a 5 V USB supply. With 200 mV typical dropout voltage at 150 mA load, the output remains regulated at 3.3 V even when the 5 V bus drops to 4.3 V during USB in-rush events.
How does the 200 mV dropout voltage of the MCP1801T-3302I/OT compare to standard LDOs, and why does it matter for battery-powered designs?
Standard LDOs often have dropout voltages of 0.5 V to 1.5 V, whereas the MCP1801T-3302I/OT achieves only 200 mV typical, meaning it maintains 3.3 V output until the battery drops to approximately 3.5 V. For a Li-ion cell discharging from 4.2 V to 3.0 V, this extends usable runtime by keeping regulation active through most of the discharge curve.
For an RF module requiring a low-ripple supply, how does the MCP1801T-3302I/OT's PSRR specification help system designers?
The MCP1801T-3302I/OT provides high PSRR that attenuates input supply noise across a broad frequency range, reducing 100 mV peak-to-peak switching ripple at the input to millivolt-level noise at the 3.3 V output. This clean rail minimizes phase noise and sensitivity degradation in Bluetooth, Zigbee, and sub-GHz RF transceivers that specify supply ripple below 10 mV peak-to-peak.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5080 | $0.51 |
| 10+ | $0.5001 | $5.00 |
| 25+ | $0.4912 | $12.28 |
| 100+ | $0.4300 | $43.00 |
| 1000+ | $0.4200 | $420.00 |
| 5000+ | $0.4100 | $2050.00 |
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