PDF, 2.7 Mb, Idioma: en, Revisión: C, Archivo subido: feb 28, 2021, Páginas: 30
42V Quad Monolithic Synchronous Step-Down Regulator
Extracto del documento
LT8602
42V Quad Monolithic
Synchronous Step-Down Regulator
FEATURES DESCRIPTION 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
n AEC-Q100 Qualified for Automotive Applications 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. n 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 2.5A (OUT2). The …