The R1140Q251D-TR is a voltage regulator IC manufactured by Ricoh. It provides a stable and regulated output voltage of 2.5V, which is essential for various electronic applications. The "-TR" suffix indicates tape and reel packaging for automated assembly.

Applications

• Microcontroller Power Supply: Regulating voltage for microcontrollers and digital circuits.
• Sensor Applications: Providing stable power for sensors and transducers requiring a precise voltage.
• Low-Power IoT Devices: Power management in battery-powered IoT devices and wearables.
• Wireless Communication Modules: Supplying stable voltage for RF transceivers and other wireless modules.
• Memory ICs: Powering memory devices like EEPROMs and SRAMs.

Features

• Fixed Output Voltage: Provides a stable 2.5V output voltage.
• Low Dropout Voltage: Ensures stable operation even when the input voltage is close to the output voltage.
• Low Quiescent Current: Minimizes power consumption in standby mode.
• Overcurrent Protection: Protects the regulator and connected circuits from damage due to excessive current.
• Short-Circuit Protection: Prevents damage in the event of a short circuit on the output.
• Thermal Shutdown Protection: Protects the IC from overheating.
• Small Package: Available in a compact package for space-constrained applications.

Benefits

• Stable Power Supply: Provides a consistent and reliable voltage source.
• Extended Battery Life: Low quiescent current minimizes power consumption.
• Protection Against Fault Conditions: Overcurrent, short circuit, and thermal shutdown features protect the regulator and connected circuitry.
• Simplified Circuit Design: Fixed output voltage simplifies circuit design.
• Reduced Board Space: Small package size allows for integration into space-constrained applications.

Additional Details

The R1140Q251D-TR typically operates with an input voltage ranging from a few volts above the output voltage (2.5V) up to the maximum specified in its datasheet. The output current capability and other detailed specifications like ripple rejection, and transient response, are found in the official Ricoh datasheet. The package is usually a small surface-mount type such as SOT-23 or DFN. The "-TR" suffix indicates tape and reel packaging. This device is typically RoHS compliant. Expect output voltage accuracy within a few percent of the nominal value. The dropout voltage is commonly around 200mV at the rated output current, depending on operating conditions.