The R1140Q261B is a voltage regulator IC from Ricoh. It's designed to provide a stable and regulated output voltage, which, based on the part number, is likely 2.6V. Voltage regulators like this are crucial for maintaining consistent power in electronic devices.

Applications

• Powering Microcontrollers: Providing a stable 2.6V supply for microcontrollers in embedded systems.
• Sensor Applications: Supplying a constant voltage to sensors and transducers requiring stable power.
• Portable Devices: Power management in battery-operated devices like wearables and IoT gadgets.
• Wireless Communication: Voltage regulation for RF transceivers and other wireless modules.
• Memory ICs: Supplying power to memory devices, such as EEPROMs and SRAMs.

Features

• Fixed Output Voltage: Provides a stable 2.6V output voltage.
• Low Dropout Voltage: Efficient operation even when the input voltage is close to the output voltage.
• Low Quiescent Current: Minimizes power consumption in standby or idle mode.
• Overcurrent Protection: Protects the IC 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: Shuts down the IC when the temperature exceeds a safe level.
• Compact Package: Available in small surface-mount packages for space-constrained applications.

Benefits

• Stable Power Supply: Provides a consistent and reliable voltage source for sensitive electronic components.
• Extended Battery Life: Low quiescent current helps to minimize power consumption in portable devices.
• Protection Against Fault Conditions: Overcurrent, short circuit, and thermal shutdown features protect the regulator and connected circuitry from damage.
• Simplified Circuit Design: Fixed output voltage simplifies circuit design and reduces the need for external components.
• Compact Footprint: Small package size allows for integration into space-constrained applications.

Additional Details

The R1140Q261B likely operates with an input voltage ranging from slightly above 2.6V up to a maximum value detailed in its datasheet. Detailed specifications, including output current capability, ripple rejection, and transient response, are available in the official Ricoh datasheet. The package type is typically a small surface mount package such as SOT-23 or DFN. The device is generally RoHS compliant. Expect an output voltage accuracy within a few percent. The dropout voltage will typically be a few hundred millivolts at the rated output current, depending on operating conditions.