Linear Technology LTC1701ES5#TR Step-Down Switching Regulator

The LTC1701ES5#TR from Linear Technology is a high-efficiency, monolithic synchronous step-down switching regulator that is designed to deliver performance with compactness for a wide range of applications. This device is housed in a space-saving SOT-23 package, making it an ideal choice for portable and space-constrained applications that require efficient power management.

The LTC1701ES5#TR operates over a wide input voltage range from 2.5V to 5.5V, making it versatile for single Li-Ion, multiple alkaline/NiMH cells, and other standard power sources. Its high switching frequency of up to 1MHz allows the use of small, low-cost capacitors and inductors, reducing the overall footprint and cost of the power supply design.

With its internal synchronous rectifier, the LTC1701ES5#TR enhances efficiency by eliminating the need for an external Schottky diode. This feature, combined with its low RDS(ON) internal switches, provides efficiencies as high as 96%, thus minimizing unnecessary power loss and heat generation. The device also includes a Burst Mode® operation that significantly improves efficiency at light loads, further extending battery life in portable applications.

The LTC1701ES5#TR offers a range of features to protect both the regulator and the system it powers. These include undervoltage lockout to prevent operation at inadequate supply voltages, a current mode control scheme for excellent line and load transient response, and thermal shutdown to protect the device under over-temperature conditions.

For design flexibility, the LTC1701ES5#TR provides an adjustable output voltage down to 0.8V, which can be set with a pair of external resistors. This feature allows designers to tailor the output voltage to the specific needs of their application, whether it be for core voltages of modern microprocessors, FPGAs, or other low voltage logic.

In summary, the LTC1701ES5#TR step-down switching regulator is a powerful, efficient, and versatile solution for a wide range of power supply applications where space is at a premium and energy efficiency is of paramount importance.