MCP1826S-3002E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
The MCP1826S-3002E/DB is a fixed 3.0 V, 1 A low dropout linear regulator from Microchip with 0.25 V typical dropout and ±2% output accuracy, accepting inputs from 2.3 V to 6 V. Housed in a compact 3-pin SOT-223 package for high-current embedded power rails. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1826S-3002E/DB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1 A output current with 0.25 V typical dropout voltage enabling efficient low-headroom power regulation
- Fixed 3.0 V ±2% output precision in a 3-pin SOT-223 package for space-critical designs
- Wide 2.3 V to 6 V input range supporting Li-ion, 5 V USB, and 4-AA battery power sources
Applications
The MCP1826S-3002E/DB provides a stable 3.0 V rail at up to 1 A for powering microcontrollers, wireless modules, and sensor arrays directly from Li-ion or USB 5 V sources with minimal external components. Its 0.25 V typical dropout makes it ideal for battery-powered IoT devices where preserving every millivolt of cell capacity extends run time. The SOT-223 package's exposed pad efficiently dissipates heat, allowing sustained 1 A output in compact enclosures without additional heatsinking.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-3 |
| YTEOL | 9 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.4V |
| Dropout Voltage1-Nom | 0.25V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 3.475V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.01515% |
| Load Regulation-Max | 0.03% |
| 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 | 3.075V |
| Output Voltage1-Min | 2.925V |
| Output Voltage1-Nom | 3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| 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 | 2.3mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Tolerance-Max | 2.5% |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Taiwan, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much headroom does the MCP1826S-3002E/DB require between input and output voltage?
The MCP1826S-3002E/DB has a typical dropout voltage of 0.25 V at 1 A output current, with a 0.4 V maximum spec at full load. This means it maintains the 3.0 V output as long as the input exceeds 3.25 V, allowing a nearly depleted 3.7 V Li-ion cell to continue powering a 3.3 V microcontroller system even as the battery discharges.
What input voltage sources are compatible with the MCP1826S-3002E/DB for battery-powered designs?
The device accepts inputs from 2.3 V to 6 V, making it compatible with a single Li-ion cell (2.5 V to 4.2 V), USB 5 V rails, 4-cell alkaline AA packs (4.8 V to 6 V), and 5 V regulated bus supplies. The 6.5 V absolute maximum input provides a safety margin for transient spikes on USB power lines in consumer electronics.
How does the SOT-223 package of MCP1826S-3002E/DB handle thermal dissipation at 1 A?
The SOT-223-3 package has a thermal resistance of approximately 60°C/W junction-to-board when mounted on a 2-layer PCB with a copper pad, limiting the internal junction temperature rise to 60°C per watt of dissipation. At 1 A output with a 2 V input-output differential, dissipation is 2 W; adding a small copper pour of 1 cm² reduces thermal resistance to around 40°C/W, keeping junction temperature within the 125°C maximum even at 85°C ambient.
When is MCP1826S-3002E/DB preferred over an adjustable LDO like MCP1826 for a 3 V power rail?
The fixed-output MCP1826S-3002E/DB eliminates the 2 resistors required by an adjustable variant, reducing BOM cost by roughly 20% and PCB area by 5 mm² per regulator. Since no external resistor tolerance error affects output accuracy, the ±2% output specification is also tighter than the ±3-4% achievable with 1% resistors in an adjustable configuration, benefiting ADC reference-quality power rails.
Related Guides
How to Choose a USB Controller: Certification, Integration, and SDK Quality Compared Across Microchip, STMicroelectronics, NXP, TI, and Renesas
Compare USB controllers from Microchip, STM, NXP, TI, and Renesas across certification difficulty, integration ease, and documentation/SDK quality to choose the right IC for your design.
May 28, 2026
ADAU1361BCPZ Application Note: Audio Codec Design Guide for Embedded Systems
Complete design guide for the ADAU1361BCPZ stereo 96kHz/24-bit audio codec: power supply filtering, PLL startup sequence, PCB layout, SigmaDSP integration, and troubleshooting.
May 28, 2026
LM66100QDCKRQ1 Design Guide: Ideal Diode and Reverse Polarity Protection for Automotive Power Rails
Complete application note for the LM66100QDCKRQ1 AEC-Q100 ideal diode controller: PMOS selection, threshold tuning, RPP integration, layout, and automotive design pitfalls.
May 28, 2026
LM2904BQDGKRQ1 Selection Guide: Automotive Dual Op-Amp Variants, Packages, and Alternatives
How to choose the right LM2904BQ automotive dual op-amp variant: AEC-Q100 grade, offset voltage, package, and non-automotive alternatives explained.
May 27, 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.
More from Microchip
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.”