Analog Devices MAX20034 Dual Buck Controllers are automotive 2.2MHz devices that provide two high-voltage, synchronous step-down controllers. The controllers operate at 180° out-of-phase. The IC operates with a 3.5V to 42V input-voltage supply and can function in dropout conditions by running at a 99% duty cycle. It's intended for applications with mid- to high-power requirements that perform at a wide input voltage range. This includes during automotive cold crank or engine stop-start conditions.
Features
Meets stringent OEM module power-consumption and performance specifications
17µA quiescent current in skip mode
±1.5% output-voltage accuracy: 5.0V/3.3V fixed, or adjustable between 1V and 10V
Enables crank-ready designs
Wide 3.5V to 36V input supply range
EMI reduction features reduce interference with sensitive radio bands without sacrificing wide input voltage range
50ns (typ) minimum on-time guarantees SkipFree operation for 3.3V output from a car battery at 2.2MHz
Spread-spectrum option
Frequency-synchronization input
Resistor-programmable frequency between 220kHz and 2.2MHz
Integration and thermally enhanced packages save board space and cost
Dual, up to 2.2MHz step-down controllers
180° out-of-phase operation
Current-mode controllers with forced-PWM (FPWM) and skip modes
