The TCR5SB28A is a low-dropout (LDO) regulator from Toshiba Semiconductor and Storage. It's designed to provide a stable 2.8V output voltage from a slightly higher input voltage. This makes it ideal for applications needing a precise and regulated voltage supply, especially in battery-powered devices.

Applications

• Smartphones and mobile devices: Powers the core processor or other sensitive circuits.
• Wireless modules (Bluetooth, Wi-Fi): Provides stable voltage for reliable communication.
• Portable audio devices: Regulates the voltage for audio amplifiers and DACs.
• Digital cameras: Powers image sensors and digital signal processors.
• Wearable electronics (smartwatches, fitness trackers): Ensures consistent performance in small devices.
• Microcontroller-based systems: Offers a clean and regulated power source for microcontrollers.

Features

• Low Dropout Voltage: Maintains a stable output even with a small input-output voltage difference.
• Low Quiescent Current: Consumes minimal power when idle, preserving battery life.
• Overcurrent Protection: Protects the regulator and connected devices from excessive current.
• Overheat Protection: Prevents damage from overheating by shutting down the regulator.
• Small Package (SOT-25 or similar): Allows for use in compact electronic devices.
• Fixed 2.8V Output Voltage: Provides a precise and stable 2.8V output.

Benefits

• Stable Power Supply: Ensures reliable operation of sensitive electronic components.
• Longer Battery Life: Low quiescent current minimizes power consumption in portable applications.
• Protection Against Electrical Faults: Overcurrent and overheat protection prevent damage.
• Compact Design: Small package allows for integration into space-constrained devices.
• Simplified Circuit Design: Fixed output voltage simplifies power supply design and reduces component count.

Additional Details

The TCR5SB28A operates typically with an input voltage range of 2.9V to 5.5V. It provides a fixed output voltage of 2.8V with a specified tolerance. The device is available in a small SOT-25 or similar surface-mount package. The typical operating temperature range is -40°C to +85°C. The output current capability is typically in the range of 300mA to 500mA, depending on the specific variant and operating conditions. External input and output capacitors are required for stability; the datasheet provides recommended values and ESR specifications. The overcurrent protection threshold is typically set above the rated output current to provide a safety margin. The thermal shutdown temperature is generally around 150°C.