MCP1703T-3302E/MB Microchip Integrated Circuit (Other) In Stock
MCP1703T-3302E/MB is a fixed 3.3 V LDO linear voltage regulator from Microchip with up to 16 V input, 0.525 V typical dropout voltage, and a maximum absolute input of 18 V for wide input range applications in a compact 3-pin SOT-89 surface-mount package.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703T-3302E/MB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5435(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1703T-3302E/MB?
- Fixed 3.3 V output LDO regulator with 0.525 V typical dropout voltage
- Wide input voltage range from 4.025 V to 16 V (18 V absolute maximum)
- 3-pin SOT-89 package for compact surface-mount power regulation
- Low quiescent current for efficient battery-powered operation
- No external components needed for stable fixed output
- RoHS compliant lead-free construction
What is MCP1703T-3302E/MB used for?
MCP1703T-3302E/MB is used in battery-powered portable electronics, IoT sensor nodes, and embedded control boards that require a stable 3.3 V regulated supply from higher-voltage inputs such as 4 V to 16 V Li-Ion, alkaline battery packs, or unregulated adapters. Its low dropout of 0.525 V and SOT-89 package make it well-suited for tight-space PCB designs in wearables, wireless modules, and industrial sensor interfaces where minimizing input-output differential loss is important.
What are the specifications of MCP1703T-3302E/MB?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-89-3 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.725V |
| Dropout Voltage1-Nom | 0.525V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 4.025V |
| JESD-30 Code | R-PSSO-F3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.1185525% |
| Load Regulation-Max | 0.0825% |
| 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 | 3.366V |
| Output Voltage1-Min | 3.234V |
| Output Voltage1-Nom | 3.3V |
| 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-3302E/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 | 8542.39.00.01 |
| Country of Origin | Mainland China, Taiwan |
Where can I find the MCP1703T-3302E/MB datasheet?
MCP1703T-3302E/MB Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1703T-3302E/MB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum input voltage MCP1703T-3302E/MB needs to maintain a regulated 3.3 V output?
MCP1703T-3302E/MB requires a minimum input voltage of approximately 4.025 V to maintain regulation at 3.3 V output, given its 0.525 V typical dropout voltage, which means it remains in regulation even as a single-cell Li-Ion battery discharges toward 4 V.
Can MCP1703T-3302E/MB accept a 12 V or 15 V unregulated adapter input without damage?
Yes. MCP1703T-3302E/MB tolerates input voltages up to 16 V continuously and an absolute maximum of 18 V, making it compatible with standard 12 V and 15 V unregulated wall adapters used to power embedded system boards requiring a 3.3 V rail.
What SOT-89-3 footprint features make MCP1703T-3302E/MB convenient for compact power supply stages?
The SOT-89-3 package provides a wider thermal tab than SOT-23 and has 3 leads on a compact body, allowing MCP1703T-3302E/MB to handle moderate load currents while fitting in constrained PCB areas typical of IoT modules and portable sensor designs.
How does MCP1703T-3302E/MB compare to a switching regulator for powering a low-current 3.3 V sensor board from 5 V?
For low-current sensor boards, MCP1703T-3302E/MB offers simpler implementation with no inductors or switching noise, since the 0.525 V dropout across a 5 V to 3.3 V rail dissipates modest power at low load currents, while a switching regulator would add cost and complexity that is rarely justified below 100 mA.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7500 | $0.75 |
| 3+ | $0.5435 | $1.63 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit