Automotive, 36V, 4A synchronous buck converter with low IQ and high efficiency with minimized COUT

The LMR60440-Q1 is a

3V to 36V (42V transient), 4A, automotive-grade synchronous buck converter in an ultra compact 2.5mm ×

2mm QFN-9 package or 3.5mm × 2.5mm QFN-11

packagewith

wettable flanks. The HotRod™ QFN

package with mitigated interference and noise technology using architecture 1

features (MINT 1) achieves low EMI

performance to facilitate

qualification of automotive and other noise-sensitive designs.

All device variants are capable of output voltages ranging from 1V to 20V in

adjustable output configuration. Each variant is also capable of delivering a fixed

output voltage by connecting the output voltage node directly to the feedback pin.

The Device Comparison Table provides details on the fixed output

voltage options. The current-mode control architecture with 30ns minimum on-time

allows high conversion ratios at high frequencies, fast transient response, and

excellent load and line regulation.

Open drain power-good output facilitates power sequencing requirements. The MODE/SYNC

pin of the LMR60440-Q1 allows the user to select

between forced pulse width modulation (FPWM), auto mode, or external synchronization

mode of operation.

The LMR60440-Q1 is designed to offer reduced output

capacitance leading to compact PCB layout and system cost savings. The LMR60440-Q1 is a part of a family of pin-compatible

devices ranging in current levels from 0.6A to 6A.