Overview
The MCP1700T-3302E/TT is a 3.3 V low dropout (LDO) voltage regulator designed for low‑power and battery‑operated electronic systems. It is widely used in portable devices, IoT nodes, and embedded microcontroller power supplies, where stable output voltage, low quiescent current, and efficient power regulation are required. The device features a compact SOT‑23‑3 package and is suited for space‑constrained applications.
Core Parameters

| Parameter | Specification |
|---|---|
| Regulator Type | Fixed output LDO voltage regulator |
| Output Voltage | 3.3 V |
| Maximum Output Current | 250 mA |
| Input Voltage Range | 2.3 V – 6.0 V |
| Typical Quiescent Current | ~1.6 µA |
| Dropout Voltage | ~178 mV @ 250 mA |
| Operating Temperature | –40 °C to +125 °C |
| Package | SOT‑23‑3 |
These parameters make the regulator suitable for 3.3 V power supply rails in low‑power circuits, especially where low quiescent current and high efficiency are critical.
Features
- Low quiescent current (~1.6 µA) for extended battery life
- Fixed 3.3 V output with tight tolerance and stable regulation
- Wide input voltage range (2.3 V – 6.0 V) for flexible power source use
- Ultra‑low dropout voltage (~178 mV at 250 mA) for efficient regulation
- Protection features including short‑circuit and thermal shutdown
- Compact SOT‑23 package ideal for space‑limited designs
These features provide reliable and efficient voltage regulation for low‑power embedded systems.
Typical Application Scenarios
- Portable battery‑powered devices such as wearables and handheld instruments
- Wireless sensor nodes and IoT endpoints where power efficiency is essential
- Microcontroller power supply circuits to provide stable 3.3 V rail
- Low‑power consumer electronics requiring minimal quiescent current
- Industrial control modules with tight power constraints
Its ability to regulate voltage with minimal loss and low standby consumption makes it ideal for a broad range of low‑power systems.
In embedded system designs, the TAJA105K025RNJ ceramic capacitor is often paired with voltage regulators like the MCP1700T-3302E/TT. This combination ensures stable power supply and low-noise operation, enabling reliable performance in IoT devices, portable electronics, and other low-power embedded applications.
Performance Comparison
Within the category of fixed 3.3 V LDO regulators, the MCP1700T-3302E/TT stands out due to:
- Low quiescent current (~1.6 µA), which extends battery life in portable applications
- Low dropout voltage (~178 mV), enabling efficient regulation even with small input‑output differentials
- Compact SOT‑23 package suitable for space‑constrained designs
- Wide input voltage range, supporting various power sources
These attributes make it a competitive choice for low‑power embedded designs compared to general‑purpose linear regulators.
Conclusion
The MCP1700T-3302E/TT is a reliable and efficient 3.3 V low dropout regulator well‑suited for low‑power and battery‑operated applications. Its low quiescent current, low dropout performance, and compact footprint make it ideal for powering embedded circuits, IoT devices, and portable electronics where energy efficiency and stable voltage regulation are required.
Manufacturer Profile

Microchip Technology Inc. is a leading semiconductor manufacturer known for microcontrollers, analog and interface products, and power management ICs. The MCP1700 family of LDO regulators offers low quiescent current and reliable voltage regulation for a wide range of embedded applications, from battery‑powered systems to industrial controls.
FAQ
1. What type of regulator is the MCP1700T-3302E/TT?
It is a fixed 3.3 V low dropout (LDO) voltage regulator designed for low‑power and embedded applications.
2. What applications benefit from this LDO?
Applications including battery‑powered devices, IoT endpoints, microcontroller power supplies, and low‑power consumer electronics benefit from its low quiescent current and stable output.
3. What are the key performance features of this regulator?
Key features include low quiescent current (~1.6 µA), low dropout voltage (~178 mV), a wide input range (2.3 V – 6.0 V), and protection functions such as thermal shutdown.
4. How can I verify the quality of the MCP1700T-3302E/TT mentioned in this blog?
7SEtronic has a comprehensive quality inspection SOP, including label verification, visual inspection, and X‑RAY analysis, to ensure part authenticity and reliability in embedded system deployment.
For more information and to review our available inventory, please contact our team for detailed pricing, current stock levels, and any additional technical support you may need.
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