LT80604

• Silent Switcher Architecture, Ultra-low EMI Emissions
• Input Voltage Range up to 65V
• 400kHz Switching Frequency
• High 93% Efficiency (V_IN = 24V, I_OUT = 5.5A)
• 8μA I_Q Regulating 24V_IN to 5V_OUT
• On-the-Fly Mode Change Between Burst, Pulse Skip, and FCM
• 99% Duty-Cycle Operation
• 0.75μA Shutdown Current
• Bias Bootstrap Input for Improved Efficiency
• Burst and Pulse Skipping Modes to Enable Enhanced Light-Load Efficiency
• Programmable Soft-Start and Tracking
• Built-in Output-Voltage Monitoring and Die Temperature Monitoring with PG/TJ
• Overtemperature and Overcurrent Protection
• External Clock Synchronization
• Proven PCB Layout
• Fully Assembled and Tested
• Complies with CISPR 25 Conducted and Radiated Emissions

The LT80605AEVKIT# (EV kit) is a proven 5V design to evaluate the LT80605A synchronous step-down Silent Switcher®. The EV kit is designed for a 5V output. The wide input range up to 65V allows a variety of input sources, such as automotive batteries and industrial supplies. The LT80605A is a compact, ultra-low EMI emission, high efficiency, high-speed synchronous monolithic step-down switching regulator that consumes only 8μA of quiescent current when the output is regulated at 5V. Top and bottom power switches, compensation components, and other necessary circuits inside the LT80605A minimize external components and simplify design. The EV kit can also evaluate the LT80605A, LT80604A, LT80605AHV, and LT80604AHV. Refer to the IC data sheet guidelines when modifying the schematic to achieve optimal performance.

The application circuit demonstrated in the evaluation board is suitable for a wide range of automotive, telecom, industrial, and other applications.

The LT80605A data sheet gives a complete description of the part, operation, and application information. Consult the data sheet in conjunction with this demo manual.