MCP1703T-3002E/MB Microchip Integrated Circuit (Other) In Stock
Microchip MCP1703T-3002E/MB is a fixed 3 V LDO voltage regulator delivering up to 250 mA output current. It accepts a wide 2.7 V to 16 V input range with a maximum dropout voltage of 0.975 V. The compact SOT-89-3 package suits portable and battery-powered embedded power supply designs.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703T-3002E/MB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4900(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1703T-3002E/MB?
- Fixed 3 V output with up to 250 mA current capability for reliable MCU and sensor supply
- Wide 2.7 V to 16 V input voltage range supporting battery, adapter, and automotive sources
- Low dropout voltage of 0.625 V nominal enabling efficient regulation from near-depleted batteries
- Compact SOT-89-3 package providing excellent thermal dissipation in a minimal PCB footprint
- RoHS-compliant lead-free construction meeting modern environmental compliance requirements
What is MCP1703T-3002E/MB used for?
The MCP1703T-3002E/MB is widely used to generate a stable 3 V rail for microcontrollers, sensors, and wireless modules in battery-powered IoT devices and portable instruments. Its wide input range allows it to regulate from lithium-ion cells (4.2 V fully charged), standard 5 V USB supplies, or even 12 V adapters without design changes. The SOT-89-3 package provides sufficient thermal headroom for continuous 250 mA operation in space-constrained consumer and industrial electronics.
What are the specifications of MCP1703T-3002E/MB?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-89-3 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.975V |
| Dropout Voltage1-Nom | 0.625V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 3.975V |
| JESD-30 Code | R-PSSO-F3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.108225% |
| Load Regulation-Max | 0.075% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.25A |
| Output Voltage1-Max | 3.06V |
| Output Voltage1-Min | 2.94V |
| Output Voltage1-Nom | 3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-243 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE |
| 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 | FLAT |
| Terminal Pitch | 1.5mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Voltage Tolerance-Max | 2% |
| ## MCP1703T-3002E/MB Alternates Showing results | Image |
| Package | Other |
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 | Mainland China, Taiwan |
Where can I find the MCP1703T-3002E/MB datasheet?
MCP1703T-3002E/MB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1703T-3002E/MB?
Compatible alternatives and drop-in replacements for MCP1703T-3002E/MB:
Frequently Asked Questions
What is the dropout voltage of the MCP1703T-3002E/MB and why does it matter for battery-powered designs?
The MCP1703T-3002E/MB has a nominal dropout voltage of 0.625 V and a maximum of 0.975 V at 250 mA load. This low dropout allows the regulator to maintain a stable 3 V output from a lithium-ion cell down to approximately 3.975 V, extending usable battery runtime compared to higher-dropout alternatives.
Can the MCP1703T-3002E/MB operate directly from a 12 V automotive or wall-adapter supply?
Yes, the MCP1703T-3002E/MB accepts input voltages up to 16 V continuous (18 V absolute maximum), making it compatible with 12 V automotive rails and standard 12 V wall adapters. Power dissipation at 250 mA with a 12 V input minus 3 V output is 2.25 W, so adequate PCB copper area or heatsinking is required.
How does the SOT-89-3 package of the MCP1703T compare to a SOT-23-3 in thermal performance?
The SOT-89-3 package has a thermal resistance of approximately 100 °C/W junction-to-ambient, significantly better than a SOT-23-3 at roughly 250 °C/W. This allows the MCP1703T in SOT-89-3 to dissipate more power before hitting the 125 °C junction temperature limit, supporting higher continuous current loads in 3 V regulator applications.
Which sensor and wireless module supply scenarios favor the MCP1703T-3002E/MB over a switching regulator?
Applications requiring a clean, low-noise 3 V rail—such as precision ADC references, MEMS microphones, and Bluetooth Low Energy modules—favor the MCP1703T-3002E/MB because LDO regulators introduce no switching noise. Designs where the voltage difference is small (under 2 V) and current draw is below 250 mA also benefit from the simpler single-component solution.
What lead time and availability should procurement teams expect for MCP1703T-3002E/MB?
Microchip lists an 8-week factory lead time for MCP1703T-3002E/MB with a YTEOL of 8 years remaining. Buyers should plan for 10 to 12 weeks of safety stock and verify authorized distributor inventory levels, as LDO regulators in SOT-89-3 frequently see allocation pressure during component shortages.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $0.7500 | $0.75 |
| 25+ | $0.6280 | $15.70 |
| 100+ | $0.5600 | $56.00 |
| 1000+ | $0.5200 | $520.00 |
| 5000+ | $0.4900 | $2450.00 |
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