MST5350BTS 35V 1.6uA Low Dropout Voltage Regulator SOT-89

MST5350BTS 35V Low Dropout Voltage Regulator is a compact, high-performance linear regulator designed to deliver a fixed 5V output with excellent load and line regulation. Packaged in a SOT-89 case, it is suitable for space-constrained and thermally demanding applications such as industrial control, embedded systems, and automotive electronics.

Key Features:

• High Input Voltage Tolerance: Operates reliably with input voltages up to 35V.
• Low Dropout Voltage: Ensures stable 5V output even with limited headroom.
• Thermal Protection: Integrated thermal shutdown prevents overheating damage.
• Current Limiting: Built-in overcurrent protection enhances safety.
• Compact SOT-89 Package: Ideal for use in dense circuit layouts and portable designs.

Technical Specifications:

• Input Voltage Range: 6V to 35V
• Output Voltage: Fixed 5.0V (LDO)
• Output Current: Up to 500mA
• Dropout Voltage: Typically 0.5V at 500mA
• Quiescent Current: 2.5mA (typical)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Thermal Shutdown Threshold: 160°C (typical)

Mechanical Specifications:

• Package Type: SOT-89
• Pin Count: 3 pins
• Pin Configuration: Pin 1 (GND), Pin 2 (VOUT), Pin 3 (VIN)
• Case Material: Molded plastic with exposed thermal pad
• Package Dimensions: Approx. 4.5mm × 2.5mm × 1.5mm

Mounting Options:

• SMD Mount: Designed for surface mount on PCB pads
• Heatsinking via PCB: Thermal pad conducts heat to copper pour below

Schematic Diagram, Connection, Wiring and Pinout:

• Connection: VIN connects to the unregulated supply, VOUT to load, and GND to system ground.
• Capacitor Recommendations: Input capacitor: 0.33µF; Output capacitor: 0.1µF to 10µF for stability.
• Pinout: 3-pin layout – GND, VOUT, VIN as per SOT-89 footprint.

Datasheet and Documentation:

• Download MST5350BTS Datasheet (PDF)

Applications:

• Microcontroller Power Supply: Regulates stable 5V for digital systems.
• Battery-Powered Devices: Maintains output as battery voltage drops.
• Automotive Circuits: Withstands high-voltage transients common in vehicles.
• Industrial Automation: Powers control circuits with high reliability.
• Consumer Electronics: Used in set-top boxes, routers, and home appliances.

Equivalent Models:

• AMS1117-5.0: Common linear regulator with similar performance
• LM7805: TO-220 regulator alternative for higher current applications
• HT75xx Series: SOT-89 regulators with multiple voltage options

Package Includes:

• 1 x MST5350BTS 35V Low Dropout Voltage Regulator SOT-89