MCP1802T-3002I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The MCP1802T-3002I/OT is a fixed 3.0V output, 300 mA LDO linear regulator with a 240 mV typical dropout voltage and high PSRR, packaged in a compact SOT-23-5. It accepts an input voltage of 4V to 10V (absolute max 12V) and is suitable for powering microcontrollers and RF modules in battery-operated and noise-sensitive designs. Available on tape and reel for automated SMD assembly in cost-optimized production.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- MCP1802T-3002I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5300(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1802T-3002I/OT?
- Fixed 3.0V regulated output voltage with up to 300mA output current
- Low 240mV typical dropout voltage for efficient operation near output voltage
- Wide input voltage range of 4V to 10V (absolute max 12V)
- High PSRR for rejection of supply noise in RF and analog applications
- Compact SOT-23-5 package minimizing board footprint in portable designs
- RoHS compliant Pb-free construction for green electronics compliance
What is MCP1802T-3002I/OT used for?
The MCP1802T-3002I/OT is used to supply regulated 3.0V to microcontrollers, Bluetooth modules, and analog sensor circuits in portable and battery-operated products where low dropout and high PSRR are critical. Its 300 mA output current is sufficient for powering a wireless MCU subsystem or multiple low-power peripherals from a 5V USB or 4–9V battery pack. The SOT-23-5 package makes it straightforward to integrate into compact IoT edge nodes, fitness trackers, and industrial handheld devices with limited PCB real estate.
What are the specifications of MCP1802T-3002I/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 16Weeks |
| YTEOL | 3 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.35V |
| Dropout Voltage1-Nom | 0.24V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 4V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.036% |
| Load Regulation-Max | 0.1% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current1-Max | 0.3A |
| Output Voltage1-Max | 3.06V |
| Output Voltage1-Min | 2.94V |
| Output Voltage1-Nom | 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 |
Where can I find the MCP1802T-3002I/OT datasheet?
MCP1802T-3002I/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1802T-3002I/OT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What dropout voltage does the MCP1802T-3002I/OT exhibit, and how does it affect battery-powered designs?
The MCP1802T-3002I/OT has a typical dropout voltage of only 240 mV, meaning it maintains a regulated 3.0V output as long as the input is above approximately 3.24V; this allows a Li-ion battery to be discharged to a lower state of charge before regulation is lost, extending usable battery runtime compared to regulators with 0.5V or higher dropout.
Can the MCP1802T-3002I/OT supply enough current for a Bluetooth Low Energy module and its microcontroller simultaneously?
Yes, the MCP1802T-3002I/OT delivers up to 300 mA continuously from a 3.0V rail, which is sufficient to power a typical BLE SoC drawing 10–15 mA in transmit mode plus a companion MCU drawing up to 50 mA, providing comfortable headroom for burst current peaks in wireless communication cycles.
How does the PSRR of the MCP1802T-3002I/OT benefit RF and audio circuit power supplies?
The MCP1802T-3002I/OT offers high power supply rejection ratio (PSRR), attenuating switching ripple and noise from upstream DC-DC converters by tens of decibels across audio and RF frequency bands; this prevents supply-coupled interference from degrading receiver sensitivity or introducing audible hum, making it an effective post-regulator after a switching pre-regulator in mixed-signal designs.
What input voltage range is supported by the MCP1802T-3002I/OT, and does it suit 9V alkaline battery inputs?
The MCP1802T-3002I/OT accepts input voltages from 4V to 10V with an absolute maximum of 12V, so a fresh 9V alkaline battery at 9V is well within its safe operating range; as the battery discharges toward 5–6V, regulation is maintained without issue, providing reliable 3.0V at up to 300 mA throughout most of the battery's usable discharge cycle.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6489 | $0.65 |
| 10+ | $0.6382 | $6.38 |
| 25+ | $0.6275 | $15.69 |
| 50+ | $0.6170 | $30.85 |
| 100+ | $0.5400 | $54.00 |
| 1000+ | $0.5300 | $530.00 |
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