LT8602

Features n Flexible Power Supply System Providing Four Outputs with a Wide Input Range n Two High Voltage Synchronous Buck Regulators: 3V to 42V Input Voltage Range Output Currents Up to 2.5A and 1.5A High Efficiency Up to 93% n Two Low Voltage Synchronous Buck Regulators: 2.6V to 5.5V Input Voltage Range Output Currents Up to 1.8A and 94% Efficiency n Resistor Programmable and Synchronizable 250kHz to 2.2MHz Switching Frequency n Low Ripple Burst Mode® Operation: 30µA IQ at 12VIN Output Ripple < 15mV n Programmable Power-On Reset n Power Good Indicators n 2-Phase Clock Reduces Input Current Ripple n Available in Thermally Enhanced 40-Lead QFN (6mm × 6mm) or 48-Lead (7mm × 7mm) LQFP Packages Applications n Automotive Systems n Distributed Supply Regulation n Industrial Controls and Power Supplies LT8602 42V Quad Monolithic Synchronous Step-Down Regulator Description The LT®8602 is a quad 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 LT8602 can be configured for micropower Burst Mode operation or pulse-skipping operation at light load. Micropower operation results in quiescent current of 30µA with all four regulators operating in the application below. The high voltage channels are synchronous buck regulators that operate from an input of 3V to 42V. The output currents are up to 1.5A (OUT1) and 2....