HT7533-LDO 3.3V Low Dropout Voltage Regulators SOT-89

HT7533-LDO 3.3V Low Dropout Voltage Regulator is a fixed 3.3V linear regulator designed for low power and low voltage applications. It offers excellent regulation, fast response, and low power consumption, making it ideal for microcontroller-based designs, battery-powered devices, and portable electronics. The compact SOT-89 package ensures easy PCB integration.

Key Features:

• Fixed Output Voltage: Provides a regulated 3.3V output from higher input voltages.
• Low Dropout Voltage: Ensures stable regulation even with low input-to-output differentials.
• Low Power Consumption: Suitable for battery-operated and energy-sensitive applications.
• Overcurrent Protection: Built-in protection from output short circuits and overcurrent conditions.
• Thermal Shutdown: Protects the regulator from excessive heat.

Technical Specifications:

• Output Voltage: 3.3V ±2%
• Input Voltage Range: 4.75V to 24V
• Dropout Voltage: 250mV (typical) at 100mA
• Output Current: Up to 100mA
• Quiescent Current: 4µA (typical)
• Output Noise: 30µVrms (typical)
• Ripple Rejection: 60dB (typical)
• Protection Features: Overcurrent and Thermal Shutdown

Mechanical Specifications:

• Package Type: SOT-89
• Pin Count: 3 pins (IN, GND, OUT)
• Material: Molded plastic body
• Mounting: Surface mount technology (SMT)
• Marking Code: HT7533

Pinout and Wiring:

• Pin 1 (GND): Ground reference
• Pin 2 (VOUT): Regulated 3.3V output
• Pin 3 (VIN): Input voltage (4.75V to 24V)
• Connection: Use bypass capacitors (1µF at input and output) for stability

Datasheet and Documentation:

• Download HT7533 Voltage Regulator Datasheet (PDF)

Applications:

• Microcontroller Power Supply: Provides regulated voltage for logic circuits.
• Battery-Powered Devices: Extends battery life with low dropout and quiescent current.
• Consumer Electronics: Used in cameras, toys, remote controls, and smart devices.
• Sensor Modules: Powers sensors requiring stable 3.3V operation.
• Portable Instruments: Suitable for handheld measuring tools and meters.

Equivalent Models:

• AMS1117-3.3: Popular low-dropout 3.3V regulator with higher current output
• LD1117-3.3: Linear regulator with similar output voltage and performance
• HT7333: High-efficiency version with low quiescent current

Package Includes:

• 1 x HT7533-LDO 3.3V Voltage Regulator (SOT-89 Package)