The R1140Q281D-TR-F is a high-performance LDO (Low Dropout) regulator manufactured by Ricoh. This regulator is designed to provide a stable and accurate output voltage even when the input voltage is close to the output voltage. It is ideal for battery-powered devices and other applications where efficiency and low noise are critical.

Applications

• Battery-powered devices
• Mobile phones
• Wireless communication devices
• Portable audio players
• Microcontroller power supplies

Features

• Input voltage range: 1.7 V to 5.5 V
• Output voltage: 2.8 V (fixed)
• Low dropout voltage: 150 mV (typical) at 150 mA
• Output accuracy: ±1.0%
• Low supply current: 35 μA (typical)
• Standby current: 0.1 μA (typical)
• Overcurrent protection
• Thermal shutdown protection
• Package: DFN(PLP)4-1010-0.5

Benefits

• Extended battery life due to low quiescent current.
• Stable output voltage even with fluctuating input voltage.
• High output accuracy ensures reliable system operation.
• Protection against overcurrent and thermal overload.
• Compact package for space-constrained applications.

Additional Details

The R1140Q281D-TR-F LDO regulator provides a stable 2.8V output voltage with high accuracy (±1.0%) from an input voltage range of 1.7V to 5.5V. Its low dropout voltage of 150mV at 150mA allows for efficient operation even when the input voltage is close to the output voltage. The regulator consumes a typical supply current of only 35 μA, which minimizes power consumption and extends battery life in portable devices. In standby mode, the current consumption is reduced to a mere 0.1 μA, further conserving power.

The R1140Q281D-TR-F includes built-in overcurrent protection and thermal shutdown protection to prevent damage from excessive current draw or overheating. The device is available in a compact DFN(PLP)4-1010-0.5 package, making it suitable for space-constrained applications. It is commonly used in battery-powered devices, mobile phones, wireless communication devices, and other applications where a stable and efficient voltage supply is required.