Microchip Fixed LDO Voltage Regulator 3.3V 500mA SOT-223-3
High-accuracy Microchip CMOS LDO voltage regulator with 3.3V fixed output, 500mA max current & 350mV dropout. Ideal for battery-operated systems.
The Microchip Fixed LDO Voltage Regulator is a high-accuracy CMOS Low Dropout Regulator designed specifically for battery-operated systems. Its advanced CMOS construction eliminates wasted ground current, significantly extending battery life compared to traditional bipolar alternatives. The total supply current is typically 80µA at full load, which is 20 to 60 times lower than bipolar regulators.
Key features of this regulator include ultra-low noise operation, very low dropout voltage (typically 350mV at full load), and a fast response to step changes in load. It incorporates both over-temperature and over-current protection, ensuring safe and reliable operation in demanding environments. Additionally, the device remains stable with an output capacitor of only 1µF and delivers a maximum output current of 500mA.
With a fixed output voltage of 3.3V and an input voltage range of 2.7V to 6V, this surface-mount regulator is highly versatile. It comes in a compact SOT-223-3 package with product dimensions of 43 mm in height, 33 mm in width, and 15 mm in depth, weighing just 0.237 grams.
Applications
This LDO voltage regulator is perfectly suited for a wide range of electronic applications, including power management systems, computers, computer peripherals, medical equipment, sensing instrumentation, consumer electronics, and automotive systems.
- Power Management
- Computers
- Computer Peripherals
- Medical Equipment
- Output Type: Fixed
- Output Voltage Nominal: 3.3V
- Input Voltage Min: 2.7V
- Input Voltage Max: 6V
- Max Output Current: 500mA
- Polarity: Positive
- Dropout Voltage Typ @ Current: 350mV
- IC Mounting: Surface Mount
- Package Type: SOT-223-3
- No. of Pins: 3
- Operating Temperature Min: -40°C
- Operating Temperature Max: 125°C
- Capacitor Stability: 1µF
- Weight: 0.237 grams
- Height: 43 mm
- Width: 33 mm
- Depth: 15 mm
- Output Current Max: 500mA
- IC Case / Package: 0
- of Pins: 3Pins
- Product Range: 3.3V 500mA LDO Voltage Regulators
- SVHC: No SVHC (04-Feb-2026)
Always follow local regulations and product guidance.
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