Product Overview: LT1121CS8-3.3 Voltage Regulator

The LT1121CS8-3.3 is a low dropout regulator (LDO) from Linear Technology, designed to provide efficient power management for electronic devices. This regulator offers a fixed output voltage of 3.3V, making it a suitable choice for consistent power supply in a variety of applications.

Key Features

• Low Dropout Voltage: The LT1121CS8-3.3 boasts a low dropout voltage, which ensures efficient operation even when the input voltage is close to the output voltage. This feature is particularly useful in battery-powered applications where maximizing the usage of available power is crucial.
• Output Voltage: This device provides a fixed output voltage of 3.3V, which is a common requirement for many digital circuits and microcontroller-based systems.
• Current Capability: It can deliver up to 150mA of output current, which is sufficient for low-power devices and standby power applications.
• Thermal Protection: The built-in thermal shutdown feature protects the device from damage due to overheating, enhancing its reliability and longevity.
• Stable with Low ESR Capacitors: The LT1121CS8-3.3 is stable with output capacitors that have a low equivalent series resistance (ESR), making it compatible with modern ceramic capacitors that are smaller and more reliable than older electrolytic types.

Applications

The LT1121CS8-3.3 is versatile and can be used in a wide range of applications, including:

• Portable electronics
• Microcontroller systems
• Battery-powered devices
• Peripheral power supplies

Package and Quality

This LDO is available in an 8-pin SOIC package, which is compact and suitable for surface-mount technology (SMT), allowing for efficient use of PCB space. Linear Technology ensures high-quality standards, making the LT1121CS8-3.3 a reliable choice for critical applications.

With its combination of low dropout performance, fixed output voltage, and thermal protection, the LT1121CS8-3.3 from Linear Technology is an excellent choice for designers looking for a robust power management solution.