MCP1703AT-5002E/MB Microchip LDO Regulator (SOT-89-3) In Stock
MCP1703AT-5002E/MB is a 5.0 V fixed-output LDO linear regulator from Microchip featuring 250 mA output current, up to 16 V input voltage, and a low 650 mV maximum dropout voltage, ideal for battery-powered and industrial applications requiring stable regulation.
- Manufacturer
- Microchip
- Package
- SOT-89-3
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703AT-5002E/MB Datasheet PDF
- Category
- LDO Regulator
- Price
- From $0.4408(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 5.0 V output with ±0.5% initial accuracy
- Input voltage range up to 16 V supports wide supply swings
- Maximum dropout voltage of 650 mV at full load current
- 250 mA continuous output current capability
- Low quiescent current for improved battery life in portable designs
- SOT-89-3 package with exposed pad for enhanced thermal dissipation
- Stable with ceramic output capacitors as small as 1 µF
Applications
The MCP1703AT-5002E/MB is widely used in battery-powered industrial instruments, handheld test equipment, and automotive accessories where a reliable 5 V rail must be derived from higher unregulated inputs up to 16 V. It is also suited for microcontroller and sensor supply rails in HVAC controls, home automation gateways, and portable data loggers that demand low dropout performance. Its SOT-89 package allows heat spreading to the PCB, making it practical for thermally constrained board areas.
Specifications
| Manufacturer Package Code | SOT-89-3 |
| Factory Lead Time | 8Weeks |
| YTEOL | 13 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.65V |
| Dropout Voltage1-Nom | 0.33V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 5.75V |
| JESD-30 Code | R-PSSO-F3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.15375% |
| Load Regulation-Max | 0.125% |
| 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 | 5.15V |
| Output Voltage1-Min | 4.85V |
| Output Voltage1-Nom | 5V |
| 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 |
| 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 | 3% |
| Package | SOT-89-3 |
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 | Mainland China, Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP1703AT-5002E/MB:
Regulator, 5V, 0.65V Dropout, CMOS, PSSO3
Frequently Asked Questions
Can MCP1703AT-5002E/MB regulate from a 12 V automotive battery input down to a stable 5 V rail?
Yes. The MCP1703AT-5002E/MB accepts input voltages from 5.75 V up to 16 V and delivers a fixed 5.0 V output at up to 250 mA, making it a suitable single-component solution for 12 V automotive accessory power rails.
How does the low dropout voltage of the MCP1703AT-5002E/MB benefit end-of-charge battery scenarios?
With a maximum dropout voltage of 650 mV and a nominal 330 mV at typical loads, the regulator continues to maintain 5.0 V output even when the supply droops, extending useful runtime by 10–15% in lithium or lead-acid battery applications.
What thermal management approach is recommended for the MCP1703AT-5002E/MB SOT-89 package at full load?
The SOT-89-3 package exposes a large collector pad that can be soldered directly to a copper pour on the PCB, enabling sufficient heat spreading to sustain 250 mA at the maximum 16 V input without an external heat sink under typical ambient conditions.
What is the expected factory lead time and minimum order consideration for MCP1703AT-5002E/MB?
Standard factory lead time is 8 weeks. Buyers planning production builds should carry at least 4–6 weeks of safety stock given Microchip's SOT-89 tape-and-reel packaging, which typically ships in 3000-piece reels.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7010 | $0.70 |
| 25+ | $0.6200 | $15.50 |
| 100+ | $0.4558 | $45.58 |
| 250+ | $0.4483 | $112.07 |
| 500+ | $0.4408 | $220.40 |
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