The R1170H191B-T1-FB is a low-dropout (LDO) voltage regulator manufactured by Ricoh. It is designed to provide a stable and accurate 1.9V output voltage from an input voltage ranging from 1.4V to 6.0V. This regulator is part of the R1170 series, known for its low supply current and various protection features.

Applications

• Powering microcontrollers
• Regulating voltage in portable electronics (smartphones, tablets)
• Battery-powered devices
• Sensor power supplies
• Wireless communication equipment

Features

• Output Voltage: Fixed 1.9V output voltage.
• Input Voltage Range: 1.4V to 6.0V.
• Low Supply Current: Minimizes power consumption and extends battery life.
• Overcurrent Protection: Protects the regulator and load from excessive current.
• Short-Circuit Protection: Protects the regulator and load from short-circuit conditions.
• Thermal Shutdown: Shuts down the regulator when the temperature exceeds a safe limit.
• Package: Available in a compact package for space-constrained applications.

Benefits

• Stable and Accurate Voltage: Provides a reliable voltage source for sensitive electronic components.
• Extended Battery Life: Low supply current reduces power consumption in battery-powered devices.
• Robust Protection: Built-in protection features enhance system reliability and prevent damage.
• Compact Size: Allows for integration into small form factor devices.
• Ease of Use: Simple to implement with minimal external components.

Additional Details

The R1170H191B-T1-FB is a CMOS-based LDO regulator, offering high performance and efficiency. The "FB" suffix likely indicates specific packaging or testing variations. External capacitors are required for stable operation; the datasheet provides detailed recommendations for capacitor selection. Proper PCB layout is crucial for minimizing noise and ensuring stable performance. Consult the datasheet for detailed electrical characteristics, application notes, and package dimensions. The device is designed to be RoHS compliant.