LT8601

LT8601 FEATURES nn Flexible Power Supply System Providing Three Outputs Over a Wide Input Voltage Range nn Two High Voltage Synchronous Buck Regulators nn 3V to 42V Input Voltage Range nn Output Currents Up to 2.5A and 1.5A nn High Efficiency Up to 93% nn One Low Voltage Synchronous Buck Regulator nn 2.6V to 5.5V Input Voltage Range nn Output Current Up to 1.8A and 95% Efficiency nn Resistor Programmable and Synchronizable from 250kHz to 2.2MHz Switching Frequency nn Low Ripple Burst Mode® Operation nn 30µA IQ at 12VIN to 3.3VOUT2 nn Output Ripple < 15mV nn Programmable Power-On Reset nn Power Good Indicators nn 2-Phase Clock Reduces Input Current Ripple nn Available in Thermally Enhanced 40-Lead QFN (6mm × 6mm) Package APPLICATIONS nn Automotive Systems nn Distributed Supply Regulation nn Industrial Controls and Power Supplies 42V Triple Monolithic Synchronous Step-Down Regulator DESCRIPTION The LT®8601 is a triple channel, current mode, monolithic buck switching regulator with a programmable power-on reset. All regulators are synchronized to a single oscillator with an adjustable frequency from 250kHz to 2.2MHz. The LT8601 can be configured for micropower Burst Mode or Pulse-Skipping operation at light load. Micropower operation results in quiescent current of 30µA with all three regulators operating as shown in the application below with no load applied. The high voltage channels are synchronous buck regulators that operate from an input of 3.0V to 42V. The output curren...