Linear Technology's LT1175CS8: Low Dropout Negative Regulator

The LT1175CS8 is a high-performance, low dropout negative voltage regulator from Linear Technology, designed to deliver a continuous output current up to 500mA with a dropout voltage of typically 0.4V at full load. This robust regulator is housed in an 8-lead SOIC package, offering a compact solution for space-constrained applications.

One of the standout features of the LT1175CS8 is its low quiescent current, which is only 500µA during operation and drops to 10µA in shutdown mode. This makes it an excellent choice for battery-powered and energy-efficient designs where power conservation is crucial. The device operates over a wide input voltage range from -4.3V to -20V, providing designers with the flexibility to use it in various negative voltage applications.

The LT1175CS8 includes several built-in protection features that enhance its reliability and longevity. These include reverse-battery protection, which safeguards the device against incorrect power supply connections, and current limiting, which prevents damage from overcurrent conditions. Additionally, the thermal shutdown mechanism ensures the regulator remains within safe operating temperatures, preventing overheating.

This regulator is easy to use, requiring only an external capacitor for stability, which can be as small as 10µF. The adjustable version allows output voltages ranging from -2.5V to -20V, which can be set with just two external resistors. This provides design flexibility and makes it suitable for a broad range of applications, including power supplies, instrumentation, and portable devices.

Linear Technology's LT1175CS8 is a reliable and efficient solution for designers looking for a negative voltage regulator with low dropout characteristics and minimal power consumption. Its combination of features and protections ensures stable operation in various applications, adding to the longevity and reliability of the end product.

For more detailed specifications and application guidance, designers are encouraged to consult the LT1175CS8 datasheet and Linear Technology's technical support resources.