MCP1726-1802E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP1726-1802E/SN is a 1 A fixed-output CMOS LDO linear regulator with 1.8 V output, 0.22 V typical dropout, and 2.3 V to 6 V input range. Features fast transient response and low quiescent current in SOIC-8 package. Worldwide shipping available.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1726-1802E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7100(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1726-1802E/SN?
- 1 A output current with only 0.22 V typical dropout voltage at full load, enabling operation from near-depleted Li-ion cells down to 2.3 V input
- Fixed 1.8 V output with tight ±0.5% accuracy and low quiescent current in SOIC-8 package for powering microcontrollers, FPGAs, and DDR memory I/O rails
- Wide input range of 2.3 V to 6 V with 6.5 V absolute maximum, accommodating single-cell Li-ion, USB 5 V, and regulated 3.3 V sources without external protection
What is MCP1726-1802E/SN used for?
The MCP1726-1802E/SN provides a clean 1.8 V supply rail for microcontrollers, DSPs, and FPGA core/I/O voltages in portable and industrial designs. Its 0.22 V typical dropout voltage allows it to regulate from a single lithium-ion cell throughout most of the battery discharge cycle, making it ideal for handheld instruments and wireless modules. The 1 A current capacity and fast transient response also suit DDR memory termination, RF front-end biasing, and sensor power domains requiring low-noise supply conditioning.
What are the specifications of MCP1726-1802E/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.5V |
| Dropout Voltage1-Nom | 0.22V |
| 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 | 0.01998% |
| Load Regulation-Max | 0.027% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 1.836V |
| Output Voltage1-Min | 1.764V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.24 |
| 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% |
| 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 |
Where can I find the MCP1726-1802E/SN datasheet?
MCP1726-1802E/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1726-1802E/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of MCP1726-1802E/SN at full 1 A load, and how does that affect Li-ion battery usage?
At 1 A output the MCP1726-1802E/SN exhibits a typical dropout voltage of 0.22 V and a maximum of 0.5 V. A single Li-ion cell discharges from 4.2 V down to approximately 3.0 V; even at end-of-life the 0.5 V maximum dropout leaves 2.5 V at the output, well above the 1.8 V regulation point, so the LDO maintains regulation for nearly the full battery capacity.
How does MCP1726-1802E/SN perform as an FPGA 1.8 V I/O supply compared to a switching regulator in a noise-sensitive design?
As a linear LDO, MCP1726-1802E/SN produces no switching noise, eliminating the need for LC output filters that a 1 MHz–6 MHz buck converter requires. The 1.8 V fixed output with ±0.5% accuracy and PSRR exceeding 60 dB at 1 kHz keeps FPGA I/O rails clean, which is critical for high-speed LVDS interfaces operating at hundreds of MHz where power-supply noise couples directly into signal margins.
Can MCP1726-1802E/SN regulate from a USB 5 V input down to 1.8 V at 1 A, and is thermal management needed?
Yes, the 2.3 V to 6 V input range covers USB 5 V. At 1 A the power dissipation is (5 V − 1.8 V) × 1 A = 3.2 W. The SOIC-8 package has a thermal resistance of approximately 100°C/W junction-to-ambient, so PCB copper pour or a small heatsink is required to keep junction temperature below 125°C in a typical 25°C ambient environment.
What external components does MCP1726-1802E/SN require for stable 1.8 V operation?
MCP1726-1802E/SN needs only an input bypass capacitor of at least 1 µF and an output capacitor of at least 1 µF (ceramic acceptable) for stable operation. Unlike some older CMOS LDOs, it is stable with low-ESR ceramic capacitors, simplifying PCB layout. The fixed 1.8 V version requires no external resistors, reducing BOM to 3 components: the IC plus 2 capacitors.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9800 | $0.98 |
| 100+ | $0.7500 | $75.00 |
| 1000+ | $0.7200 | $720.00 |
| 5000+ | $0.7100 | $3550.00 |
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