The HT7533-1-SOT89TRLF is a low dropout (LDO) linear regulator manufactured by Holtek. This regulator is designed to provide a stable and regulated 3.3V output voltage from a higher input voltage, with minimal voltage drop. It is typically used in various electronic devices to supply power to sensitive components that require a stable voltage source.

Applications

• Microcontroller power supplies
• Wireless communication devices
• Portable electronic devices
• Battery-powered applications
• Post-regulation for switching power supplies

Features

• Low dropout voltage: Typically 170mV at 100mA
• Output voltage: 3.3V fixed
• Output current: Up to 150mA
• Input voltage range: 2.5V to 12V
• SOT-89 package
• Over-temperature protection
• Short-circuit protection

Benefits

• Stable voltage supply: Provides a consistent 3.3V output, ensuring reliable operation of connected components.
• Low dropout: Operates effectively even with a small difference between input and output voltages, maximizing battery life in portable devices.
• Compact size: The SOT-89 package allows for easy integration into space-constrained designs.
• Protection features: Over-temperature and short-circuit protection enhance the regulator's robustness and prevent damage to connected circuitry.
• Easy to use: Requires minimal external components for operation.

Additional Details

The HT7533-1-SOT89TRLF regulator uses a CMOS process for low quiescent current, improving efficiency and extending battery life. The device is stable with ceramic output capacitors. The over-temperature protection circuit shuts down the regulator when the junction temperature exceeds a certain limit. The short-circuit protection limits the output current, preventing damage during short-circuit conditions. The typical quiescent current is around 4μA. Its operating temperature range typically spans from -40°C to +85°C.