The R1172H251D-T1-F is a CMOS-based voltage regulator manufactured by Ricoh. This LDO regulator is designed for applications requiring low supply current and high accuracy. The device outputs 2.5V.

Applications:

• Power source for microcomputers: Providing a stable voltage to ensure proper operation.
• Power supply for RF modules: Delivering clean power to sensitive radio frequency components.
• Voltage regulation in portable equipment: Ensuring stable operation in battery-powered devices.
• Power management in wearable devices: Contributing to efficient power usage in compact devices.

Features:

• Low Supply Current: Reduces power consumption in battery-powered devices.
• High Output Voltage Accuracy: Provides precise voltage regulation.
• Low Dropout Voltage: Allows for operation with a small difference between input and output voltage.
• Built-in Overcurrent Protection: Protects the device from excessive current draw.
• Thermal Shutdown Protection: Prevents damage from overheating.
• Small Package: Suitable for compact applications.

Benefits:

• Extended Battery Life: Low supply current minimizes power drain.
• Reliable Operation: Accurate voltage regulation ensures stable performance.
• Simplified Design: Integrated protection features reduce the need for external components.
• Space-Saving Solution: Small package allows for integration into compact devices.
• Enhanced System Protection: Overcurrent and thermal shutdown protection increase reliability.

Additional Details:

The R1172H251D-T1-F features a typical dropout voltage that allows the regulator to maintain its output voltage even when the input voltage approaches the output voltage level. The output voltage accuracy is tightly controlled to ensure proper operation of the load. The device's quiescent current is minimized to reduce power consumption in standby mode. The overcurrent protection feature limits the output current to prevent damage during overload conditions. The thermal shutdown protection disables the output when the junction temperature exceeds a specified limit. The compact package is designed for space-constrained applications, making it suitable for portable and wearable devices. The regulator is stable with ceramic capacitors, which are commonly used in modern electronic devices. The enable pin allows for turning the regulator on and off, further reducing power consumption when the regulated voltage is not required. The R1172 series provides excellent ripple rejection performance, which is important for noise-sensitive applications. It is also lead-free and RoHS compliant, making it environmentally friendly.