MCP1727-1802E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP1727-1802E/SN is a fixed 1.8 V, 1.5 A low-dropout (LDO) linear regulator with power-good output, featuring a typical dropout voltage of 0.33 V and an input range of 2.3 V to 6 V. It is housed in an SOIC-8 package and delivers stable 1.8 V rails for digital logic and memory. Available from Microchip with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1727-1802E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8700(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.5 A output current capability with only 0.33 V typical dropout supports powering large FPGAs, processors, and DDR memory from a 2.3 V to 6 V input rail
- Power-good (PG) output flag signals valid output voltage to the system, enabling sequenced power-up of multi-rail circuits without external supervisory ICs
- Fixed 1.8 V output eliminates the 2-resistor feedback network required by adjustable LDOs, reducing component count and output-voltage error
- Low dropout of 0.33 V typical and 6 V absolute-maximum input allows operation from USB 5 V, Li-ion 3.7 V, or 3.3 V pre-regulated rails
Applications
MCP1727-1802E/SN is used to generate the 1.8 V core supply for microcontrollers, FPGAs, and DDR SDRAM chips in embedded systems powered from USB, Li-ion batteries, or 3.3 V regulated bus. Its 1.5 A output handles the peak current demands of ARM Cortex-M and Cortex-A devices during burst processing, while the power-good flag supports orderly power sequencing in multi-rail systems. The SOIC-8 package and low external capacitor requirement make it a straightforward drop-in for portable instruments, industrial I/O modules, and single-board computers.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.55V |
| Dropout Voltage1-Nom | 0.33V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 2.3V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.010656% |
| Load Regulation-Max | 0.018% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 1.845V |
| Output Voltage1-Min | 1.755V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| 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 | Small Outline Packages |
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 | Mainland China, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Can MCP1727-1802E/SN be powered from a single-cell Li-ion battery (3.7 V nominal) to supply a 1.8 V MCU core rail?
Yes. A Li-ion cell delivers 3.0 V to 4.2 V across its discharge curve, which exceeds the minimum 2.3 V input and the 1.8 V output plus 0.33 V typical dropout (2.13 V). At 3.0 V end-of-discharge, the 0.87 V headroom ensures MCP1727-1802E/SN maintains the 1.8 V output without dropout, allowing the system to use nearly the full battery capacity before the regulator falls out of regulation and the system can perform a safe-shutdown sequence.
How does the power-good output of MCP1727-1802E/SN support multi-rail power sequencing in an FPGA design?
MCP1727-1802E/SN's active-high power-good (PG) pin asserts when the 1.8 V output rises above approximately 92% of its nominal value. In an FPGA design that requires the 1.8 V core rail to stabilize before the 3.3 V I/O rail is enabled, the PG pin drives the enable input of the 3.3 V regulator directly, ensuring a minimum of 1 ms to 5 ms between core and I/O power-up without a dedicated supervisor IC or MCU GPIO sequencing logic.
What output capacitor is required for MCP1727-1802E/SN, and how does that compare to older LDO designs with large capacitor requirements?
MCP1727-1802E/SN is stable with a 10 µF ceramic output capacitor, which is smaller and cheaper than the 22 µF to 100 µF electrolytic capacitors required by older PNP-based LDOs. The ceramic cap has lower ESR and a smaller footprint (0402 or 0603 size), reducing the total LDO solution area on a PCB by up to 50% compared to legacy regulators that needed electrolytic capacitors with a specific ESR window of 0.1 to 1 ohm for stability.
How does MCP1727-1802E/SN handle a 5 V USB input powering a 1.8 V FPGA core with a 1.2 A peak current demand?
With a 5 V USB input and 1.8 V output, MCP1727-1802E/SN dissipates (5 V - 1.8 V) x 1.2 A = 3.84 W as heat. The SOIC-8 package has a thermal resistance of approximately 120°C/W junction-to-ambient, which would raise junction temperature by 460°C at full load without heat sinking — so copper pour or a small heat spreader keeping theta_JA below 30°C/W is required. For sustained 1.2 A loads from USB 5 V, placing the device on a 1 cm x 1 cm copper island connected to inner ground planes reduces the effective junction-to-ambient to under 50°C/W, keeping Tj below 125°C at 25°C ambient.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1600 | $1.16 |
| 25+ | $0.9900 | $24.75 |
| 100+ | $0.8900 | $89.00 |
| 1000+ | $0.8700 | $870.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”