MCP1810T-33I/J8A Microchip Power Supply (Small Outline No-lead) In Stock
MCP1810T-33I/J8A is a Microchip 150 mA fixed 3.3 V LDO linear regulator in a VDFN-8 package with ultra-low quiescent current for battery-powered applications. Features a maximum dropout voltage of 380 mV, 4.1 V to 5.5 V input range, and low noise output. Available in stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- MCP1810T-33I/J8A Datasheet PDF
- Category
- Power Supply
- Price
- From $0.7265(MOQ 240)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1810T-33I/J8A?
- Ultra-low quiescent current consumption in the single-digit µA range enables extended battery life in IoT and wearable devices between active duty cycles
- Fixed 3.3 V output at up to 150 mA with a maximum 380 mV dropout voltage, supporting 4.1 V Li-ion battery direct regulation down to near-full discharge
- Wide input voltage range of 4.1 V to 5.5 V (absolute maximum 6 V) accommodates USB 5 V and single-cell Li-ion battery inputs in the same design
- Compact VDFN-8 no-lead package minimizes PCB footprint for space-constrained wearable and portable sensor node designs
- Low output noise and excellent PSRR suitable for noise-sensitive RF, ADC reference, and sensor supply rails requiring a clean 3.3 V rail
What is MCP1810T-33I/J8A used for?
The MCP1810T-33I/J8A is designed for battery-powered IoT nodes, wearable devices, and wireless sensor modules where a stable 3.3 V rail at up to 150 mA is required with minimal standby current drain. Its ultra-low quiescent current makes it ideal for always-on circuits—such as an RTC or wake-up comparator—that must remain powered while the main MCU sleeps, extending coin-cell or Li-Po battery life by weeks compared to higher-IQ regulators. Engineers also deploy it as a post-regulator for USB-powered portable instruments where the 5 V USB input is stepped down to a clean 3.3 V supply for precision ADCs and RF front ends sensitive to switching regulator noise.
What are the specifications of MCP1810T-33I/J8A?
| Manufacturer Package Code | VDFN-8 |
| Date Of Intro | 2016-09-28 |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.38V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 4.1V |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e3 |
| Load Regulation-Max | 0.099% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 85°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 | SOLCC8,.08,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | MATTE TIN |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2% |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Where can I find the MCP1810T-33I/J8A datasheet?
MCP1810T-33I/J8A Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1810T-33I/J8A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output current and output voltage of the MCP1810T-33I/J8A?
The MCP1810T-33I/J8A provides a fixed 3.3 V regulated output at up to 150 mA continuous load current. This current capacity is sufficient to power a low-power MCU, a BLE radio module drawing 10 mA to 20 mA during transmission bursts, and several I2C sensors simultaneously, covering the majority of IoT and wearable system power budgets within a single regulator.
How low is the dropout voltage on the MCP1810T-33I/J8A and what minimum input voltage does it need?
The MCP1810T-33I/J8A has a maximum dropout voltage of 380 mV at full 150 mA load, requiring a minimum input of approximately 3.68 V to maintain regulation. With its specified 4.1 V minimum input, it comfortably regulates from a single-cell Li-ion battery down to the 3.5 V to 3.6 V range that corresponds to roughly 20% remaining capacity, extracting more usable energy compared to older LDOs with 500 mV or higher dropout.
What input voltage range does the MCP1810T-33I/J8A support and does it work directly from USB 5 V?
The MCP1810T-33I/J8A accepts input voltages from 4.1 V minimum to 5.5 V maximum, with an absolute maximum rating of 6 V. This range spans the standard USB 5 V rail (4.75 V to 5.25 V under USB spec) and fully charged Li-ion batteries at 4.2 V, allowing a single-part design that operates correctly from either power source depending on system configuration.
How does the quiescent current of the MCP1810T-33I/J8A benefit deeply sleeping IoT sensor nodes?
The MCP1810T-33I/J8A draws only a few µA of quiescent current at zero load — well below 10 µA over the operating temperature range. For a node that sleeps 99% of the time with a 10 µAh sleep current budget over a 1000 mAh coin cell, the LDO's near-zero IQ contributes less than 1% of total current consumption, meaning battery life is dominated by the MCU and radio active-mode energy rather than by regulator housekeeping current.
For a compact wearable PCB, how does the VDFN-8 package of MCP1810T-33I/J8A compare to an SOT-23-5 LDO in board space?
The VDFN-8 no-lead package used by the MCP1810T-33I/J8A measures approximately 2 mm × 2 mm with an exposed thermal pad, versus 2.9 mm × 1.6 mm for a standard SOT-23-5 footprint. While similar in area, the VDFN-8 no-lead pad offers better thermal performance — reducing thermal resistance by up to 30% compared to SOT-23 lead-frame packages — allowing full 150 mA output without derating in compact wearable assemblies where forced air cooling is unavailable.
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