MCP1701AT-3302I/CB Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
The MCP1701AT-3302I/CB is a fixed 3.3 V, 250 mA LDO linear regulator with only 2 µA quiescent current, 0.4 V typical dropout voltage, accepting up to 10 V input, in a compact SOT-23A-3 package. From $0.45 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1701AT-3302I/CB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4600(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 MCP1701AT-3302I/CB?
- Ultra-low 2 µA quiescent current enabling years of standby operation in battery-powered IoT and remote sensing nodes
- Fixed 3.3 V output with 250 mA current capability and 0.4 V typical dropout voltage for efficient regulation from Li-Ion and alkaline battery stacks
- Wide 4.3 V to 10 V input range in a tiny SOT-23A-3 package for space-constrained automotive and industrial sensor designs
What is MCP1701AT-3302I/CB used for?
The MCP1701AT-3302I/CB is ideal for always-on IoT sensor nodes, wireless beacon tags, and remote telemetry units where the 2 µA quiescent current allows a CR2032 coin cell to power the standby circuit for several years without draining the battery. Its 4.3 V to 10 V input range supports direct connection to 6 V alkaline packs, single-cell LiPo systems, or 9 V industrial supply rails without an additional pre-regulator. The fixed 3.3 V output and tiny SOT-23A-3 footprint make it a drop-in supply for low-power MCUs, sensors, and RF modules that require a stable 3.3 V rail.
What are the specifications of MCP1701AT-3302I/CB?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23A-3 |
| Factory Lead Time | 16Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.7V |
| Dropout Voltage1-Nom | 0.4V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 4.3V |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.05643% |
| Load Regulation-Max | 0.08976% |
| 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 | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| 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 (3-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 MCP1701AT-3302I/CB datasheet?
MCP1701AT-3302I/CB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1701AT-3302I/CB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What quiescent current does MCP1701AT-3302I/CB draw, and how does this extend battery life in IoT designs?
The MCP1701AT-3302I/CB draws only 2 µA of quiescent current at no load, meaning a 220 mAh CR2032 coin cell powering just the regulator bias would last over 12 years. In duty-cycled IoT sensor nodes that sleep most of the time at sub-milliamp system current, this ultra-low quiescent makes the regulator contribution to battery drain essentially negligible.
What is the dropout voltage of MCP1701AT-3302I/CB and what minimum input voltage is required to maintain 3.3 V output?
The MCP1701AT-3302I/CB has a nominal dropout voltage of 0.4 V (maximum 0.7 V at 250 mA), which means the input must be at least 3.7 V to guarantee the regulated 3.3 V output. Its specified input range starts at 4.3 V, comfortably above this dropout margin and compatible with a fresh alkaline AA cell pack or a near-full single-cell Li-Ion at 4.2 V.
Can MCP1701AT-3302I/CB handle the transient load spikes from an RF transmitter module?
The MCP1701AT-3302I/CB is rated for 250 mA continuous output current, which covers the typical 150 mA to 200 mA peak current drawn by short-range RF modules such as nRF24L01 or ESP8266 during 100 µs to 1 ms transmit bursts. Adding a 10 µF ceramic output capacitor improves transient response and prevents the output from drooping below the RF module's minimum 3.0 V threshold during the peak.
How does the SOT-23A-3 package of MCP1701AT-3302I/CB simplify PCB layout for compact sensor boards?
The SOT-23A-3 package occupies less than 4 mm² of PCB area and requires only an input capacitor of 1 µF and output capacitor of 1 µF to be stable, making the total footprint including passives under 10 mm². This compact regulator circuit fits on a 20 mm × 20 mm sensor PCB alongside a microcontroller and environmental sensor without any other power management components.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6882 | $0.69 |
| 10+ | $0.6818 | $6.82 |
| 25+ | $0.6139 | $15.35 |
| 100+ | $0.5300 | $53.00 |
| 1000+ | $0.4900 | $490.00 |
| 5000+ | $0.4600 | $2300.00 |
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