MCP1825-1802E/AT Microchip Integrated Circuit (Other) In Stock
MCP1825-1802E/AT is a fixed 1.8 V, 500 mA LDO linear voltage regulator from Microchip featuring ultra-low 210 mV typical dropout voltage and 6 V maximum input. Designed for portable and embedded systems, it provides stable power with fast transient response and only 120 µA quiescent current. Available in a compact TO-220-5 package for easy integration into space-constrained designs.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1825-1802E/AT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0000(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1825-1802E/AT?
- Fixed 1.8 V output with only 210 mV typical dropout voltage for efficient regulation
- 500 mA output current with low 120 µA quiescent current for battery-powered designs
- Wide 2.1 V to 6 V input voltage range supports diverse power supply architectures
- Fast transient response and output voltage accuracy of ±0.5% for stable sensitive circuits
What is MCP1825-1802E/AT used for?
MCP1825-1802E/AT is ideal for powering microcontrollers, FPGAs, and mixed-signal ICs in portable consumer electronics, IoT nodes, and embedded computing boards. Its 500 mA current capability and ultra-low 210 mV dropout make it well-suited for battery-operated systems where extending runtime while maintaining a stable 1.8 V rail is critical. The device also serves as a post-regulator in systems with switching supplies that need clean, regulated 1.8 V power for noise-sensitive analog or digital circuits.
What are the specifications of MCP1825-1802E/AT?
| Pbfree Code | Yes |
| Manufacturer Package Code | TO-220-5 |
| 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-T5 |
| 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 | SIP5,.1,67TB |
| 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 | 1.7mm |
| 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 |
Where can I find the MCP1825-1802E/AT datasheet?
MCP1825-1802E/AT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1825-1802E/AT?
Compatible alternatives and drop-in replacements for MCP1825-1802E/AT:
Fixed Positive LDO Regulator, 1.8V, 0.35V Dropout, CMOS, PSFM3
Frequently Asked Questions
What is the dropout voltage of MCP1825-1802E/AT and how does it impact battery-powered designs?
The MCP1825-1802E/AT has a typical dropout voltage of 210 mV and a maximum of 350 mV at 500 mA output. This low dropout characteristic allows the regulator to maintain a stable 1.8 V output even when the supply voltage drops close to the regulated output, extending useful battery life in portable 2.1 V to 6 V powered designs.
Which microcontroller or FPGA supply rails can MCP1825-1802E/AT power in embedded system designs?
MCP1825-1802E/AT can supply the 1.8 V core rail for low-voltage microcontrollers, FPGAs, and DSPs drawing up to 500 mA. It is commonly used to power STM32, PIC32, and Xilinx Artix-7 I/O banks where a clean 1.8 V rail with minimal noise and fast transient response is required for stable digital operation.
How does MCP1825-1802E/AT compare to adjustable LDOs for fixed 1.8 V applications in terms of component count?
As a fixed 1.8 V regulator, MCP1825-1802E/AT eliminates the resistor divider network required by adjustable LDOs, reducing BOM by 2 resistors and improving output accuracy to ±0.5%. This simplification lowers PCB area and assembly cost, making it a preferred choice for space-constrained designs producing a 500 mA, 1.8 V supply rail.
What input voltage range does MCP1825-1802E/AT support, and what is its absolute maximum input voltage?
MCP1825-1802E/AT operates with an input voltage range of 2.1 V to 6 V and has an absolute maximum input rating of 6.5 V. This range accommodates single-cell Li-ion batteries (4.2 V fully charged), 5 V USB supplies, and 3.3 V boosted rails, making it versatile across portable and USB-powered embedded applications delivering a stable 1.8 V, 500 mA output.
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