LTC1147LCS8-3.3#TR - Step-Down Switching Regulator

The LTC1147LCS8-3.3#TR is a high-efficiency, synchronous step-down switching regulator from Linear Technology, designed to provide a fixed output voltage of 3.3V. This component is part of a series known for their low power consumption and high conversion efficiency, making them ideal for battery-powered applications where energy conservation is crucial.

Encased in an 8-lead SOIC package, the LTC1147 series utilizes a constant frequency, current mode architecture, which allows for stable operation over a wide range of supply and output voltages. The LTC1147LCS8-3.3#TR features a high switching frequency of up to 200kHz, which permits the use of small surface mount inductors and capacitors, thus reducing the overall footprint and component cost on the PCB.

One of the key attributes of this regulator is its high efficiency, which can reach up to 94%. This is achieved through the use of synchronous rectification and Burst Mode® operation at light loads. The Burst Mode operation significantly reduces the no-load quiescent current, making this regulator an excellent choice for standby power systems.

The LTC1147LCS8-3.3#TR also incorporates a range of protective features to ensure the longevity and reliability of both the regulator and the system it powers. These include a low-battery detector, a current limit, and thermal shutdown. The low-battery detector provides an early warning of a dropping supply voltage, which is particularly useful for battery-powered devices.

Moreover, the device is designed to support a wide input voltage range from 4.5V to 20V, accommodating various supply sources from single-cell lithium-ion batteries to multi-cell battery stacks or even wall adapters. This flexibility makes the LTC1147LCS8-3.3#TR a versatile choice for a broad array of applications, including portable devices, automotive power systems, and industrial equipment.

With its tape and reel packaging, denoted by the 'TR' suffix, the LTC1147LCS8-3.3#TR is optimized for automated manufacturing processes, ensuring a streamlined production flow and lower assembly costs.

In summary, the LTC1147LCS8-3.3#TR from Linear Technology is a compact, efficient, and reliable solution for applications requiring a regulated 3.3V output from a higher voltage source, with the added benefits of high efficiency, low quiescent current, and comprehensive protection features.