Product Overview: LT1111CS8 from Linear Technology

The LT1111CS8 is a versatile step-up/step-down switching regulator from Linear Technology, designed to cater to a wide range of power supply applications. This compact, efficient, and reliable component is perfect for designs where space and power efficiency are critical. With its ability to operate in both step-up and step-down modes, the LT1111CS8 provides a flexible solution for managing power in circuits that require a regulated output voltage from a varying input source.

Key Features:

• Wide Input Voltage Range: The LT1111CS8 operates with an input voltage range from 2V to 12V, making it suitable for applications powered by single-cell batteries, multiple cells, or AC adapters.
• Adjustable Output Voltage: Users can set the output voltage from 1.25V to as high as the input voltage permits, ensuring compatibility with a variety of loads and devices.
• High Efficiency: With its high efficiency of up to 85%, the LT1111CS8 minimizes heat generation and maximizes battery life in portable applications.
• Low Quiescent Current: The device features a low quiescent current of 1.3mA, which is reduced to 130µA in shutdown mode, thus conserving power in standby or idle states.
• Frequency Operation: The LT1111CS8 switches at 100kHz, allowing the use of small, low-cost inductors and capacitors to minimize the footprint and cost of the overall power supply design.
• Versatile Packaging: It is available in an 8-pin SO package, which is suitable for surface-mount technology and helps in reducing the overall size of the end product.

Applications:

The LT1111CS8 is ideal for a wide range of applications, including but not limited to:

• Portable Instruments
• Battery-Powered Equipment
• Cellular Phones
• Medical Devices
• Automotive Accessories
• DC Power Supply Conversion

With its robust design and versatile features, the LT1111CS8 from Linear Technology stands out as a comprehensive power management solution suitable for a myriad of electronic devices and systems.