MCP1825ST-3302E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
The MCP1825ST-3302E/DB is a fixed 3.3 V LDO linear voltage regulator from Microchip capable of sourcing up to 500 mA with a typical dropout voltage of 210 mV. It operates from a 3.73 V to 6 V input in a compact SOT-223-3 package. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1825ST-3302E/DB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output with ±0.5% initial accuracy
- 500 mA maximum output current capability
- Low dropout voltage: 210 mV typical at 500 mA
- Input voltage range 3.73 V to 6 V (absolute max 6.5 V)
- Compact SOT-223-3 package for efficient thermal dissipation
- RoHS-compliant, lead-free construction
Applications
The MCP1825ST-3302E/DB is commonly used to supply a stable 3.3 V rail to microcontrollers, FPGAs, memory modules, and communication ICs in battery-powered and USB-powered consumer electronics, IoT sensors, and industrial instrumentation. Its low dropout voltage and high output current make it an efficient post-regulator following a 5 V bus or lithium-ion charge circuit.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 8Weeks |
| 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 | 3.7325V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.0119724% |
| Load Regulation-Max | 0.033% |
| 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 | 3.3825V |
| Output Voltage1-Min | 3.2175V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Packing Method | TR |
| 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 | 8542.39.00.01 |
| Country of Origin | Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP1825ST-3302E/DB:
suggested
Frequently Asked Questions
What minimum input voltage does MCP1825ST-3302E/DB require to maintain a regulated 3.3 V output at 500 mA?
With a typical dropout voltage of 210 mV at full 500 mA load, the MCP1825ST-3302E/DB requires an input of at least approximately 3.51 V to stay in regulation. The datasheet specifies a minimum input of 3.73 V to guarantee regulation across the full temperature and load range, providing a safe design margin.
For a 5 V USB-powered design, how much power will the MCP1825ST-3302E/DB dissipate when supplying 500 mA at 3.3 V?
At a 5 V input supplying 500 mA, the dropout across the regulator is approximately 1.7 V, producing about 850 mW of power dissipation. The SOT-223-3 package provides a exposed pad thermal path to the PCB, helping manage this heat within safe junction temperature limits up to 125°C.
Is MCP1825ST-3302E/DB a good choice when the input supply can be as low as 4 V, such as from a nearly discharged Li-Ion cell?
Yes. The MCP1825ST-3302E/DB operates with input voltages from 3.73 V to 6 V, so a Li-Ion cell discharged to 3.8 V still provides enough headroom above the 210 mV typical dropout to deliver a regulated 3.3 V output, making it suitable for single-cell lithium-powered IoT and wearable designs.
Does this part comply with RoHS and lead-free assembly requirements for EU market products?
Yes. The MCP1825ST-3302E/DB carries Microchip's Pb-free designation per the 'Pbfree Code: Yes' product record, complying with RoHS directives applicable to products sold in the EU. The SOT-223-3 package uses tin-based finish compatible with standard lead-free reflow soldering profiles at up to 260°C peak reflow temperature.
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