RT9193-33GB LDO 3.3V 300mA Voltage Regulator SOT23-5

RT9193-33GB LDO 3.3V 300mA Voltage Regulator (SOT-23-5) delivers a stable 3.3 V output for low-noise, low-dropout power applications. Designers integrate it into portable devices, microcontroller systems, and communication modules where efficiency and precision are critical.

Key Features:

• Fixed 3.3 V Output: Maintains regulated voltage with ±2% accuracy.
• Low Dropout Voltage: Typical 220 mV at 300 mA for efficient operation.
• High Output Current: Supports up to 300 mA continuous load.
• Low Noise Performance: Optimized for RF, audio, and precision analog circuits.
• Current Limit and Thermal Shutdown: Protects against overload and overheating.
• Low Quiescent Current: Typical 65 μA for battery-powered devices.

Technical Specifications:

• Output Voltage: 3.3 V fixed
• Output Current: Up to 300 mA
• Dropout Voltage: ~220 mV at 300 mA load
• Output Voltage Accuracy: ±2%
• Quiescent Current: Typical 65 μA
• PSRR: 70 dB at 1 kHz
• Operating Temperature Range: -40 °C to +85 °C
• Input Voltage Range: 2.5 V to 5.5 V

Mechanical Specifications:

• Package Type: SOT-23-5 surface-mount
• Lead Finish: Matte tin-plated
• Body Material: Epoxy resin housing, RoHS compliant

Dimensions:

• Body Length: ~2.9 mm
• Body Width: ~1.6 mm
• Body Height: ~1.1 mm
• Lead Pitch: 0.95 mm

Pinout and Wiring:

• Pin 1: GND – Ground connection
• Pin 2: VOUT – Regulated 3.3 V output
• Pin 3: NC – No internal connection (may be used for PCB routing)
• Pin 4: CE – Chip Enable (active high)
• Pin 5: VIN – Input voltage
• Connect input capacitor (1 μF) between VIN and GND, output capacitor (1 μF) between VOUT and GND for stability.

Datasheet Reference:

• Download the official RT9193-33GB datasheet from Richtek for detailed electrical, mechanical, and application guidelines.

Applications:

• Portable Electronics: Power microcontrollers, sensors, and RF modules.
• Communication Devices: Regulate voltage for transceivers and modems.
• Industrial Control: Provide clean power to precision analog and digital ICs.
• Consumer Electronics: Use in cameras, wearables, and IoT products.

Equivalent Models:

• AMS1117-3.3: Fixed 3.3 V LDO regulator with higher dropout voltage.
• MIC5205-3.3: Low-noise 3.3 V regulator with similar output current.
• AP7333-3.3: High-accuracy 3.3 V LDO regulator in SOT-23-5.

Package Includes:

• 1 x RT9193-33GB LDO 3.3V 300mA Voltage Regulator (SOT-23-5)