MCP1824ST-3302E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
Microchip MCP1824ST-3302E/DB is a fixed 3.3 V low-dropout LDO linear regulator with 500 mA output current and a typical 200 mV dropout voltage in a compact SOT-223-3 package. It accepts input voltages from 3.7 V to 6 V and is optimized for low-noise, stable power rails. Available in stock worldwide with fast shipping from authorized distributors.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1824ST-3302E/DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4823(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 200 mV typical dropout voltage at 500 mA extends battery runtime by allowing operation closer to the regulated output voltage
- Fixed 3.3 V output with tight ±0.5% accuracy ensures stable supply for precision ADCs, RF modules, and microcontrollers sensitive to supply variation
- SOT-223-3 package with exposed thermal pad supports up to 500 mA continuous output with enhanced thermal dissipation on two-layer PCBs
Applications
The MCP1824ST-3302E/DB is used in battery-powered IoT nodes, wireless sensor modules, and handheld instruments that require a stable 3.3 V supply derived from a 4.2 V Li-ion cell or 4 × AA battery pack. Its low 200 mV dropout and 500 mA output make it suitable for powering microcontrollers, Bluetooth/Wi-Fi radios, and sensor ICs in portable designs where battery life is critical. PCB designers also use it in USB-powered accessories and industrial I/O boards where a clean low-noise 3.3 V rail is needed alongside a 5 V input.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 20Weeks |
| YTEOL | 9 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.32V |
| Dropout Voltage1-Nom | 0.2V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 3.7025V |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.012888975% |
| 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 | 0.3A |
| 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 |
| 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 | 2.3mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2.5% |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP1824ST-3302E/DB:
suggested
suggested
suggested
Fixed Positive LDO Regulator, 3.3V, 0.32V Dropout, CMOS, PDSO5
Frequently Asked Questions
What is the dropout voltage and maximum output current of the MCP1824ST-3302E/DB?
The MCP1824ST-3302E/DB has a typical dropout voltage of 200 mV and a maximum of 320 mV at full 500 mA load, allowing it to regulate 3.3 V from an input as low as approximately 3.7 V, which is close to the cutoff voltage of a Li-ion cell.
What input voltage range is supported by the MCP1824ST-3302E/DB, and is it compatible with 5 V USB power?
The regulator accepts input voltages from 3.7025 V minimum to 6 V maximum, placing it within the safe range for 5 V USB bus power and 4.2 V fully-charged Li-ion cells, making it versatile for both battery-operated and USB-powered portable device designs.
How accurate is the 3.3 V output regulation of the MCP1824ST-3302E/DB over temperature and load?
The MCP1824ST-3302E/DB provides ±0.5% output voltage accuracy at room temperature, maintaining tight 3.3 V regulation across line and load variations from 0 mA to 500 mA, which is precise enough for 10-bit and 12-bit ADC reference supplies and RF transceiver VDD rails.
For a Li-ion battery-powered MCU board, how does MCP1824ST-3302E/DB compare to a 1117-3.3 LDO?
The MCP1824ST-3302E/DB offers a significantly lower typical dropout of 200 mV versus the 1117's 1.1 V to 1.3 V, meaning it can sustain 3.3 V output down to a 3.7 V battery voltage, extending usable battery capacity by effectively utilizing the final 400 mV of the discharge curve that the 1117 would cut off early.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5360 | $0.54 |
| 3+ | $0.4823 | $1.45 |
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