ABRIDGED DATA SHEET EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX20034 General Description The MAX20034 is an automotive 2.2MHz, dual synchronous step-down controller IC that provides two highvoltage, synchronous step-down controllers that operate
180° out-of-phase. The IC operates with a 3.5V to 42V
input-voltage supply and can function in dropout condition
by running at 99% duty cycle. It is intended for applications
with mid-to high-power requirements that perform at a
wide input voltage range, such as during automotive coldcrank or engine stop-start conditions.
The IC’s step-down controllers operate at up to 2.2MHz
frequency to allow small external components, reduced
output ripple, and to guarantee no AM band interference.
The switching frequency is resistor adjustable (220kHz
to 2.2MHz). SYNC input programmability enables three
frequency modes for optimized performance: forced
fixed-frequency operation, skip mode with ultra-low
quiescent current, and synchronization to an external
clock. The IC is also available with spread-spectrum
frequency modulation to minimize EMI interference.
The IC features a power-OK monitor, overvoltage lockout, and undervoltage lockout. Protection
features include cycle-by-cycle current limit and
thermal shutdown. The MAX20034 is specified
for operation over the -40°C to +125°C automotive
temperature range. Applications ●● POL Applications for Automotive Power High-Efficiency 2.2MHz, 36V, Dual Buck
Controller with 17μA Quiescent Current Benefits and Features ●● Meets Stringent OEM Module Power-Consumption
and Performance Specifications …