Linear Technology LT1117CST18 Voltage Regulator

The LT1117CST18 is a robust fixed voltage regulator from Linear Technology, designed to provide a steady 1.8V output for a variety of electronic applications. This low dropout (LDO) regulator is capable of delivering up to 800mA of output current, making it an excellent choice for powering low voltage microprocessors, memory chips, and other digital logic circuits that require a stable power supply.

Featuring a dropout voltage of typically 1.2V at a full load, the LT1117CST18 maintains high efficiency even when the input-to-output voltage differential is small. This characteristic is particularly beneficial in battery-operated devices where extending the battery life is crucial. Furthermore, the device is designed to operate with a wide range of input voltages, from 2.5V to 20V, providing flexibility in various power supply configurations.

The LT1117CST18 incorporates several protective features to ensure the longevity and reliability of both the regulator and the electronic system it powers. Overcurrent protection safeguards the device against excessive input currents, while thermal overload protection with hysteresis prevents damage due to overheating. Additionally, the regulator has a safe area compensation feature that minimizes the risk of output voltage overshoot during startup or transient conditions.

For design convenience, the LT1117CST18 is available in a compact SOT-223 package, which is suitable for surface mount technology (SMT) and occupies minimal board space. This makes it an ideal choice for space-constrained applications such as portable devices, embedded systems, and compact power supplies.

In summary, the LT1117CST18 from Linear Technology is a reliable and efficient fixed voltage regulator that offers excellent performance for a wide range of applications. Its low dropout voltage, high output current capability, and robust protection features make it a versatile component for any power management design.

Key Features:

• Fixed 1.8V output voltage
• 800mA output current capability
• Low dropout voltage: typically 1.2V at full load
• Wide input voltage range: 2.5V to 20V
• Overcurrent and thermal overload protection
• Safe area compensation
• Compact SOT-223 package suitable for SMT