MCP1826S-1802E/AB Microchip Integrated Circuit (Other) In Stock
The MCP1826S-1802E/AB is a fixed 1.8 V, 1 A low-dropout linear voltage regulator with a typical dropout voltage of only 0.25 V, accepting input voltages from 2.3 V to 6 V and packaged in a TO-220-3 through-hole case. Its tight ±2% output accuracy and high current capability make it suitable for powering FPGAs, DSPs, and digital logic in embedded systems.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1826S-1802E/AB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8760(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8 V output with ±2% accuracy for precise digital core and I/O supply rails
- 1 A output current with typical dropout voltage of only 0.25 V at full load
- Wide input range: 2.3 V to 6 V enabling use with 3.3 V and 5 V supply rails
- Low quiescent current for efficiency in always-on and standby power applications
- TO-220-3 package with metal tab for external heatsink attachment on high-current designs
- RoHS-compliant lead-free construction suitable for industrial and consumer applications
Applications
MCP1826S-1802E/AB is widely used to power 1.8 V digital logic cores in FPGAs, microprocessors, and DSPs in embedded computing and industrial control systems. Its 1 A output and low 0.25 V dropout make it effective for stepping down a 3.3 V system bus to a 1.8 V core voltage with minimal heat dissipation. It is also found in network equipment, FPGA development boards, and industrial automation controllers where a reliable, high-current 1.8 V rail is required.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TO-220-3 |
| 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 | 2.3V |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.01332% |
| 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 | 1A |
| Output Voltage1-Max | 1.845V |
| Output Voltage1-Min | 1.755V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP3,.1TB |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Packing Method | TUBE |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | NO |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Voltage Tolerance-Max | 2.5% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage accuracy of MCP1826S-1802E/AB, and how does this affect FPGA core voltage tolerance?
MCP1826S-1802E/AB delivers a fixed 1.8 V output with ±2% accuracy, meaning the output stays between 1.764 V and 1.836 V under all operating conditions. Most 1.8 V FPGA core voltage specifications allow ±5% tolerance, so this regulator provides a comfortable margin for reliable FPGA operation.
Can MCP1826S-1802E/AB supply 1 A from a 3.3 V input without a heatsink in typical bench conditions?
At 1 A load with a 3.3 V input and 1.8 V output, the power dissipation is approximately (3.3 V - 1.8 V) × 1 A = 1.5 W. The TO-220-3 metal tab allows attachment of an external heatsink, which is recommended at full 1 A load to keep junction temperature within the rated range. Light-load applications under 500 mA may operate without a heatsink in still air.
What is the minimum input voltage for MCP1826S-1802E/AB, and is it suitable for lithium-ion battery-powered designs?
MCP1826S-1802E/AB requires a minimum input voltage of 2.3 V, which is above the minimum usable voltage of a single lithium-ion cell (approximately 3.0 V cutoff). With a nominal 3.7 V Li-ion cell and a 0.25 V typical dropout, the regulator maintains regulation even as the battery discharges, making it suitable for single-cell portable designs.
How does MCP1826S-1802E/AB compare to a switching regulator for a 3.3 V-to-1.8 V conversion at 500 mA?
At 500 mA load, MCP1826S-1802E/AB dissipates about (3.3 V - 1.8 V) × 0.5 A = 0.75 W as heat, giving a linear efficiency of about 55%. A switching regulator at this conversion ratio would achieve 80–90% efficiency, dissipating far less heat. The LDO is preferred when simplicity, low noise, and small BOM are more important than efficiency, such as in noise-sensitive analog or RF supply circuits.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3200 | $1.32 |
| 100+ | $1.0000 | $100.00 |
| 1000+ | $0.9700 | $970.00 |
| 5000+ | $0.8870 | $4435.00 |
| 7500+ | $0.8780 | $6585.00 |
| 10000+ | $0.8760 | $8760.00 |
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