MCP1790-3302E/DB Microchip Integrated Circuit (SOT223 (3-Pin)) In Stock
The MCP1790-3302E/DB is a fixed 3.3 V low-dropout linear regulator from Microchip Technology supporting input voltages from 6 V to 30 V and delivering up to 70 mA output current with ±2.5% accuracy. Housed in a compact SOT-223 package, it targets automotive and industrial systems requiring stable low-noise regulation from wide input supplies.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- MCP1790-3302E/DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9900(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output with ±2.5% accuracy over a 6 V to 30 V input range
- Low dropout voltage of 0.7 V typical, 1.3 V maximum at full load
- 70 mA output current in a 4-pin SOT-223 package for easy thermal management
- Wide input voltage range up to 30 V continuous, 48 V absolute maximum
- AEC-Q100 qualified grade for automotive applications
Applications
The MCP1790-3302E/DB is ideal for automotive sensor modules, instrument clusters, and body control units operating from a 12 V or 24 V vehicle bus where a stable 3.3 V rail is needed for microcontrollers or sensors. Industrial panel meters, fieldbus nodes, and battery-powered equipment also benefit from its wide input range and low dropout, allowing operation even as battery voltage sags. Its compact SOT-223 footprint suits space-constrained PCBs in both automotive and industrial designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-223-3 |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.3V |
| Dropout Voltage1-Nom | 0.7V |
| Input Voltage Absolute-Max | 48V |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 6V |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.0396% |
| Load Regulation-Max | 0.01485% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.07A |
| 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 |
| 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 | 2.5% |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much headroom voltage does the MCP1790-3302E/DB need above 3.3 V to maintain regulation?
The MCP1790-3302E/DB has a typical dropout voltage of 0.7 V and a maximum of 1.3 V at 70 mA load. This means an input of at least 4.6 V (3.3 V + 1.3 V) is required to guarantee regulation across all production units, providing ample margin from a 5 V or 6 V minimum input.
Is the MCP1790-3302E/DB suitable for direct connection to a 24 V industrial bus rail?
Yes. The device accepts input voltages from 6 V up to 30 V continuously, and 48 V absolute maximum. A 24 V industrial bus is well within the continuous input range, allowing direct connection without a pre-regulator stage while delivering a stable 3.3 V at up to 70 mA.
Which automotive qualification does the MCP1790-3302E/DB hold, and what temperature range does it cover?
The MCP1790 series carries AEC-Q100 automotive qualification. The E-grade suffix indicates an extended temperature range of -40°C to +125°C, making it suitable for under-hood and dashboard automotive environments with harsh thermal cycling.
What thermal considerations apply when dissipating power in the SOT-223 package at high input voltages?
In the SOT-223 package, the exposed metal tab provides a thermal path to the PCB copper. At 30 V input and 70 mA load, power dissipation reaches approximately 1.9 W, so PCB copper pours under the tab and adequate airflow are recommended to stay within the device's maximum junction temperature of 125°C.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $1.1800 | $29.50 |
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| 468+ | $0.9900 | $463.32 |
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