MCP1754ST-3302E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
Microchip MCP1754ST-3302E/DB is a fixed 3.3 V low-dropout linear regulator with 300 mV typical dropout, 16 V maximum input voltage, and high-current capability in a 3-pin SOT-223 package suited for industrial and automotive power supply designs. From $0.90 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1754ST-3302E/DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5078(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1754ST-3302E/DB?
- Fixed 3.3 V output with 300 mV typical dropout voltage and 500 mV maximum, enabling efficient regulation from 12 V automotive or industrial supply rails down to a clean 3.3 V logic supply
- Wide input voltage range of 3.6 V to 16 V with 17.6 V absolute maximum supports automotive battery voltages from 5 V to 14 V including load-dump transients without overvoltage damage
- 3-pin SOT-223 package with exposed thermal pad provides enhanced heat dissipation for higher output current operation compared to SOT-23 or SC70 packages of similar footprint
What is MCP1754ST-3302E/DB used for?
The MCP1754ST-3302E/DB is designed for generating a stable 3.3 V supply rail from automotive 12 V systems, industrial 5 V to 15 V power buses, and unregulated wall adapter outputs where a simple, robust LDO is preferred over a switching regulator. Its 16 V maximum input rating accommodates automotive load-dump transients and industrial supply fluctuations without requiring additional protection components. The SOT-223 package enables higher continuous current delivery compared to smaller LDO packages, making it suitable for powering microcontrollers, CAN transceivers, and sensor subsystems in automotive body control modules and industrial I/O boards.
What are the specifications of MCP1754ST-3302E/DB?
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 11Weeks |
| YTEOL | 14 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.5V |
| Dropout Voltage1-Nom | 0.3V |
| Input Voltage Absolute-Max | 17.6V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 3.6V |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.02046% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 150°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 3.366V |
| Output Voltage1-Min | 3.234V |
| 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 |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.3mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Tolerance-Max | 2% |
| 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 |
Where can I find the MCP1754ST-3302E/DB datasheet?
MCP1754ST-3302E/DB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1754ST-3302E/DB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much input-to-output voltage headroom does the MCP1754ST-3302E/DB need to maintain a regulated 3.3 V output from a 12 V automotive rail?
The MCP1754ST-3302E/DB requires a minimum of 3.3 V plus the maximum dropout voltage of 0.5 V, totaling 3.8 V minimum input, which is far below the 12 V automotive supply. From a 12 V rail, the LDO dissipates (12 V - 3.3 V) × Iout watts, so at 500 mA output current, power dissipation reaches 4.35 W. The SOT-223 package thermal resistance must be managed with adequate PCB copper area to keep junction temperature below 125°C.
Does the MCP1754ST-3302E/DB withstand automotive load-dump transients, and what protection is built in?
The MCP1754ST-3302E/DB has an absolute maximum input voltage of 17.6 V, which is marginal for direct automotive load-dump transients that can reach 40 V to 60 V per ISO 7637. For full automotive load-dump protection, an external Zener diode or TVS clamp rated below 17.6 V must be added at the input to prevent exceeding the absolute maximum rating. Within its 3.6 V to 16 V operating range, the device handles normal 12 V automotive system voltage variation of ±20% without issue.
How does the SOT-223 package of the MCP1754ST-3302E/DB compare to a SOT-23 LDO in terms of current and thermal performance?
The SOT-223 package has a thermal resistance of approximately 60°C/W junction-to-board with adequate PCB copper, compared to SOT-23's 180°C/W to 250°C/W, allowing the SOT-223 device to dissipate 3x to 4x more power at the same junction temperature. A SOT-23 LDO typically supports 150 mA to 300 mA continuous current in typical applications, while the SOT-223 package of the MCP1754ST enables continuous operation at 500 mA or more with appropriate PCB layout.
When is the MCP1754ST-3302E/DB preferred over a switching regulator for a 12 V to 3.3 V conversion in an industrial sensor node?
The MCP1754ST-3302E/DB is preferred when output current is below 200 mA, the PCB space budget cannot accommodate the inductor and capacitors required by a buck converter, or radiated EMI from a switching regulator would interfere with a sensitive analog sensor in the same enclosure. At 200 mA load with a 12 V input, the LDO dissipates approximately 1.74 W with an efficiency of about 27.5%, which is thermally manageable in a SOT-223 with copper area but less efficient than a 90%-efficient buck converter saving 1.4 W at the same load.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8283 | $0.83 |
| 3+ | $0.6316 | $1.89 |
| 250+ | $0.5803 | $145.08 |
| 500+ | $0.5078 | $253.90 |
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