The LT1965IDD-2.5#PBF is a high-performance low dropout linear regulator (LDO) from Linear Technology, designed to deliver a continuous output current of up to 1.1A with a fixed output voltage of 2.5V. This regulator is specifically engineered to provide low noise, high power supply rejection ratio (PSRR), and low dropout voltage, making it an ideal choice for sensitive analog circuitry requiring a clean and stable power supply.

Key Features

• Low Noise Output: With only 40µVRMS (10Hz to 100kHz) of output noise, this LDO is suitable for noise-sensitive applications such as precision instrumentation, RF supply, and audio amplifiers.
• High PSRR: Exhibits excellent power supply rejection ratio characteristics, typically 66dB at 1kHz, ensuring minimal influence from supply voltage variations.
• Low Dropout Voltage: The device requires a minimal difference between input and output voltage to maintain regulation, typically 340mV at full load, which enhances efficiency and allows operation with lower input voltages.
• Adjustable Output: While it comes with a fixed 2.5V output, the LT1965 series also offers an adjustable version for applications requiring different output voltages.
• Fast Transient Response: Capable of maintaining output voltage stability in the face of rapid load changes, which is crucial for high-performance digital circuits.
• Thermal Protection: Built-in thermal shutdown and current limit protection features safeguard the device and the load under abnormal operating conditions.
• Stable with Low ESR Capacitors: Stable with ceramic capacitors, which allows the use of smaller, more reliable, and less expensive capacitors.

Applications

The LT1965IDD-2.5#PBF is versatile and can be used in a wide range of applications, including but not limited to:

• Telecommunications
• Portable and battery-powered equipment
• Post-regulation for switching power supplies
• Microprocessor supply
• Medical equipment
• Linear power supplies

This LDO is available in a 10-lead DFN package with a low thermal impedance, making it suitable for compact and thermally challenging environments. The LT1965IDD-2.5#PBF is also RoHS compliant, adhering to environmental standards and regulations.