MCP1804T-2502I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The MCP1804T-2502I/OT is a fixed 2.5 V low-dropout linear regulator from Microchip capable of 150 mA output current with an input range of 4.5 V to 28 V in a tiny SOT-23-5 package. It offers a typical dropout voltage of 1.5 V at full load, making it suitable for wide-input industrial and automotive-adjacent power supplies. Available in tape-and-reel packaging for automated assembly in IoT devices, sensors, and communication modules.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1804T-2502I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6080(MOQ 25)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.5 V output with up to 150 mA continuous load current
- Wide 4.5 V to 28 V input voltage range supports automotive and industrial supply rails
- Low 1.5 V typical dropout voltage extends usable battery discharge range
- Compact SOT-23-5 package occupies minimal PCB area for space-constrained designs
- RoHS-compliant, lead-free (PBF) construction suitable for green manufacturing
- Tape-and-reel (T/R) packaging enables high-volume automated pick-and-place assembly
Applications
The MCP1804T-2502I/OT is used in industrial sensors, fieldbus transceivers, and communication modules that require a stable 2.5 V reference or supply rail derived from wide-ranging unregulated DC sources up to 28 V. Its low dropout of 1.5 V allows efficient regulation from 4.5 V battery packs or lightly regulated adapters with minimal heat dissipation at 150 mA loads. The SOT-23-5 footprint makes it a first choice for space-constrained boards in smart metering, IoT gateway modules, and instrumentation front ends.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 16Weeks |
| YTEOL | 9 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.9V |
| Dropout Voltage1-Nom | 1.5V |
| Input Voltage Absolute-Max | 30V |
| Input Voltage-Max | 28V |
| Input Voltage-Min | 4.5V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.176% |
| Load Regulation-Max | 0.09% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.1A |
| Output Voltage1-Max | 2.55V |
| Output Voltage1-Min | 2.45V |
| Output Voltage1-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Tolerance-Max | 2% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Japan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP1804T-2502I/OT:
suggested
suggested
suggested
suggested
Frequently Asked Questions
How much heat does MCP1804T-2502I/OT dissipate when regulating from a 12 V input down to 2.5 V at 100 mA?
At 12 V input and 2.5 V output with 100 mA load, the power dissipation across MCP1804T-2502I/OT is (12 V - 2.5 V) × 100 mA = 950 mW. The SOT-23-5 package has a thermal resistance of approximately 250°C/W junction-to-ambient, so junction temperature rise is about 237°C above ambient in still air. For sustained 100 mA at 12 V input, supplementary PCB copper area or airflow is required to keep the junction below the 125°C maximum.
Can MCP1804T-2502I/OT operate from a 24 V industrial power rail and still deliver a clean 2.5 V output for a sensor ADC reference?
Yes. The MCP1804T-2502I/OT accepts input voltages up to 28 V, comfortably handling a 24 V industrial rail. At 24 V input and 2.5 V output with a light 10 mA load, power dissipation is only 215 mW, well within the SOT-23-5 package capability with modest PCB copper pours. The fixed 2.5 V output has sufficient accuracy and low noise for ADC reference applications in 12-bit or 14-bit precision measurement systems.
What is the minimum input voltage needed for MCP1804T-2502I/OT to maintain full 150 mA output regulation?
To maintain regulation at full 150 mA, the input voltage must exceed the 2.5 V output by at least the maximum dropout voltage of 1.9 V, requiring a minimum input of approximately 4.4 V. The datasheet specifies a guaranteed operating input voltage minimum of 4.5 V, providing margin above the worst-case dropout. Systems powered from a Li-ion cell (minimum discharge around 3 V) should use a boost converter before the MCP1804T-2502I/OT to guarantee operation through the full discharge cycle.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.7600 | $19.00 |
| 100+ | $0.6900 | $69.00 |
| 1000+ | $0.6500 | $650.00 |
| 2250+ | $0.6210 | $1397.25 |
| 3000+ | $0.6080 | $1824.00 |
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