MCP1825S-1802E/AB Microchip Integrated Circuit (Other) In Stock
MCP1825S-1802E/AB is a fixed 1.8V LDO linear regulator delivering 500 mA output current with a maximum 0.35 V dropout voltage and 2.1 V to 6 V input range. Housed in a TO-220-3 package, it offers stable voltage regulation with minimal external components. Suited for microcontroller power rails, sensor supplies, and portable electronics requiring a clean 1.8 V supply.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1825S-1802E/AB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7370(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8 V output with 500 mA output current capability
- Low dropout voltage of 0.21 V typical, 0.35 V maximum
- Wide 2.1 V to 6 V input voltage range
- RoHS-compliant lead-free TO-220-3 package
- Stable output with minimal external passives required
- Suitable for 3.3 V or 5 V to 1.8 V conversion in embedded systems
Applications
MCP1825S-1802E/AB is commonly used to supply 1.8 V logic rails in microcontroller and FPGA-based designs where the input is a 3.3 V or 5 V regulated bus. Its 500 mA current capability and low dropout make it ideal for sensor modules, wireless modules, and SD card interfaces requiring a clean, stable 1.8 V supply. The through-hole TO-220-3 package simplifies prototyping and low-volume production where soldering ease and thermal dissipation are priorities.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TO-220-3 |
| Factory Lead Time | 11Weeks |
| YTEOL | 9 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.35V |
| Dropout Voltage1-Nom | 0.21V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 2.1V |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.0109584% |
| 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 | 0.5A |
| 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 |
| 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
Compatible alternatives and drop-in replacements for MCP1825S-1802E/AB:
Frequently Asked Questions
What output current and dropout voltage does MCP1825S-1802E/AB deliver for 1.8 V rail applications?
MCP1825S-1802E/AB provides up to 500 mA output current with a typical dropout voltage of 0.21 V and a maximum of 0.35 V. This low dropout allows the regulator to maintain a stable 1.8 V output from a 2.1 V minimum input, supporting designs where headroom is tight.
How does the TO-220-3 package of MCP1825S-1802E/AB affect thermal management in a 5 V to 1.8 V design?
With a 5 V input and 500 mA load, the power dissipation is approximately 1.6 W, so the TO-220-3 through-hole package allows easy attachment of a heatsink. This is a significant advantage over SOT-223 or smaller surface-mount regulators for higher-current prototyping and low-volume production boards.
When procuring MCP1825S-1802E/AB, what is the factory lead time and is a RoHS-compliant version available?
MCP1825S-1802E/AB has a factory lead time of approximately 11 weeks for standard orders. The device carries a Pb-free RoHS-compliant marking, so it meets current environmental regulations without requiring a separate lead-free product variant.
For a battery-powered sensor node, how does MCP1825S-1802E/AB compare to a switching regulator at 1.8 V, 100 mA?
At light loads such as 100 mA from a 2.1 V minimum input, the dropout is only 0.21 V, delivering efficient operation without the switching noise and design complexity of a DC-DC converter. For applications where simplicity, low BOM cost, and noise sensitivity matter more than efficiency at moderate loads, MCP1825S-1802E/AB is the preferred choice.
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