2.2MHz low quiescent current buck converter
Reduce system noise and footprint in sensitive automotive power supply systems.

Texas Instruments (TI) (President Kent Jeon) announced the introduction of a 2.2MHz, dual-channel synchronous buck converter integrated circuit (IC) that integrates unique features to significantly reduce electromagnetic interference (EMI) and high-frequency noise in high-voltage DC/DC step-down applications such as automotive infotainment and high-end cluster power supply systems.

The LM5140-Q1 controller provides two output channels using phase interleaving and is available in wettable flank packaging to reduce manufacturing process time.

Additionally, TI's WEBENCH automotive design tools enable engineers to bring automotive designs to market faster.


For a blog article about industrial applications that require regulated voltages above 15 V, such as programmable logic controllers (PLCs) or factory automation equipment, see “How to Extend the Output Voltage Range of Your Controller.”

In addition to the LM5140-Q1, the recently released LM53600-Q1, LM53601-Q1, LM53602-Q1, and LM53603-Q1 buck converters are a comprehensive family of controllers and converters that provide power from less than 1A to more than 10A for automotive systems. All of these operate at switching frequencies greater than 2MHz and with low IQ, reducing EMI.

The LM5140-Q1 provides dual channels up to 10A using an external MOSFET, making it ideal for high-end infotainment or noise-sensitive systems. The LM53600-Q1 and LM53601-Q1 provide 650mA and 1A of load current, respectively, making them ideal for Advanced Driver Assistance Systems (ADAS).

Additionally, the LM53602-Q1 and LM53603-Q1 provide 2 A and 3 A of load current, respectively, making them ideal for high-current ADAS and infotainment systems. For more information, watch the video, "TI's LM53601-Q1 2.1 MHz Step-Down Converter for 36 V, 1 A Automotive Applications."