LTC3872ETS8#TRPBF - Step-Down Controller from Linear Technology

The LTC3872ETS8#TRPBF is a high-performance step-down switching regulator controller from Linear Technology, designed to drive an external MOSFET for converting input voltages to lower output voltages with high efficiency. This compact and efficient controller is ideal for a variety of applications, including portable devices, automotive systems, and industrial power supplies.

Key Features:

• Wide Input Voltage Range: The LTC3872ETS8#TRPBF operates from an input voltage range of 2.75V to 9.8V, making it suitable for single Li-Ion, multi-cell alkaline or NiMH applications, as well as fixed 3.3V, 5V, or 12V systems.
• Constant Frequency Operation: It maintains a constant switching frequency of 550kHz, which minimizes the size of external components and helps to avoid interference with sensitive RF or audio circuitry.
• Low Dropout Operation: The low dropout operation allows the output voltage to be maintained even when the input voltage is very close to the output voltage, enhancing efficiency and battery life in portable applications.
• Adjustable Burst Mode® Operation: The controller features adjustable Burst Mode operation, which significantly improves efficiency at light loads by reducing the quiescent current.
• No Sense Resistor Required: The LTC3872ETS8#TRPBF does not require a sense resistor, as it utilizes a current mode architecture for excellent line and load transient response.
• Integrated Soft-Start: An internal soft-start capability is included to prevent inrush current at startup, providing a smooth transition to regulation.
• Thermal Protection: Over-temperature protection ensures the device operates within safe temperature limits.
• Compact Package: The controller is available in a thermally enhanced TSOT-23 package, which is ideal for space-constrained applications.

Applications:

• Portable Electronics
• Automotive Power Systems
• Industrial Power Supplies
• Distributed Power Systems
• Point of Load Regulation

The LTC3872ETS8#TRPBF is a versatile and robust solution for a wide range of power management applications. Its advanced features and compact footprint make it a top choice for designers looking to optimize power efficiency and performance in their products.