The R1170H451B-T1-HB is a voltage regulator IC manufactured by Ricoh. It's designed to provide a stable and accurate 4.5V output voltage, making it well-suited for a variety of electronic devices and systems requiring a reliable power source.

Applications

• Power management in portable electronic devices
• Voltage regulation in battery-powered applications
• Powering microcontrollers and digital circuits
• Power supply for sensors and communication modules

Features

• Fixed output voltage of 4.5V
• Low dropout voltage
• Overcurrent protection
• Thermal shutdown protection
• Small SOT-23-5 package

Benefits

• Ensures stable and reliable operation of connected devices
• Extends battery life in portable applications
• Protects against damage from overcurrent and over-temperature conditions
• Reduces board space requirements

The R1170H451B-T1-HB is a CMOS-based voltage regulator with a fixed 4.5V output. Its low dropout voltage characteristic allows it to maintain a stable output even when the input voltage approaches the output voltage, making it efficient for battery-powered systems where the battery voltage declines during use. Integrated overcurrent and thermal shutdown protection features enhance the device's reliability by preventing damage from overload or overheating. The compact SOT-23-5 package is beneficial for applications where board space is limited. The regulator's high output voltage accuracy is crucial for powering sensitive electronic components, ensuring proper functioning and longevity.

Technical Specifications:

• Output Voltage: 4.5V
• Input Voltage Range: 2.0V to 6.0V
• Output Current: Up to 300mA
• Dropout Voltage: Typically 150mV at 100mA
• Operating Temperature Range: -40°C to +85°C
• Package: SOT-23-5