3.3V 300mA LDO Voltage Regulator, SOT-23-3
High-performance 3.3V 300mA LDO regulator with ultra-low dropout & noise. Ideal for battery-powered & RF applications. SOT-23 package.
The 3.3V 300mA LDO (Low Dropout) Voltage Regulator is a high-performance, ultra-low dropout (ULDO) component designed for modern, compact electronic devices. It delivers a stable 3.3V output from a minimal input voltage, featuring an exceptionally low typical dropout of just 250mV at full 300mA load, maximising efficiency and battery life in portable applications.
Engineered for superior noise performance, it offers very low output noise and excellent power supply ripple rejection (PSRR of 75dB at 100Hz), making it ideal for sensitive analogue and RF circuitry. A logic-compatible enable/shutdown control input allows for advanced power management, facilitating a low-power shutdown mode with a standby current of just 1µA maximum to significantly extend battery life in handheld products.
The regulator incorporates comprehensive protection features for robust and reliable operation, including overcurrent, overtemperature, and reverse current protection. Its design ensures excellent stability with low-ESR capacitors and provides tight regulation against both load and line variations.
Key Technical Specifications:
- Output Voltage: Fixed 3.3V with a maximum accuracy of ±1%.
- Maximum Output Current: 300mA.
- Input Voltage Range: 2.5V to 13.2V.
- Typical Dropout Voltage: 250mV @ 300mA.
- Standby Current: 0.01µA typical in shutdown mode.
- Output Noise: 260nV/√Hz typical.
- Package: Compact SOT-23-3 surface-mount package.
- Operating Temperature Range: -40°C to +85°C.
- Battery-powered portable devices
- Cellular and cordless telephones
- Wireless communicators and PDAs
- PC motherboards and add-on cards
- Output Type: Fixed
- Output Voltage: 3.3V Nominal
- Output Voltage Accuracy: ±1% maximum
- Maximum Output Current: 300mA
- Input Voltage Range: 2.5V to 13.2V
- Typical Dropout Voltage: 250mV at 300mA
- Power Supply Ripple Rejection (PSRR): 75dB at 100Hz
- Typical Output Noise: 260nV/√Hz
- Standby Current: 1µA maximum
- Low-Power Shutdown Current: 0.01µA typical
- Protection Features: Overcurrent, Overtemperature, Reverse Current
- Control Feature: Logic-compatible enable/shutdown input
- Package Type: SOT-23-3 (Surface Mount)
- Operating Temperature Range: -40°C to +85°C
- Mounting Style: Surface Mount
- Pin Count: 3
- Dimensions: 33mm (Width) x 43mm (Height) x 15mm (Depth)
- Polarity: Positive Output
- Output Current Max: 300mA
- Max Output Current: 300mA
- IC Mounting: Surface Mount
- IC Case / Package: SOT-23
- of Pins: 3Pins
- Operating Temperature Min: -40°C
- Operating Temperature Max: 85°C
- Product Range: 3.3V 300mA LDO Voltage Regulator, SOT 23, 3 Pins, SMD
- MSL: MSL 3 - 168 hours
- SVHC: No SVHC (25-Jun-2025)
Documents
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