The LMQ61460-Q1 evaluation module (EVM) is designed to help customers evaluate the performance of the LMQ61460-Q1 synchronous step-down voltage converter. This EVM implements the LMQ61460-Q1 in a 14-pin wettable flanks Hotrod™ package, as shown in Table 1-1. It is capable of delivering 5-V output voltage and up to 6-A load current switching at 400 kHz with exceptional efficiency and output accuracy in a very small solution size. The EVM provides multiple power connectors and test points. In addition to an optimized EMI board layout, the LMQ61460-Q1 utilizes integrated bypass capacitors which results in great EMI performance.

Figure 1-1 LMQ61460EVM-400K Top View

The LMQ61460-Q1 is an easy-to-use synchronous step-down DC/DC converter capable of delivering up to 6 A of load current from a supply voltage ranging from 3 V to 36 V. The LMQ61460-Q1 provides exceptional efficiency and output accuracy in a very small solution size. The LMQ61460-Q1 is capable of delivering 6 A of load current and implements peak current mode control. The following are additional features that provide both flexible and easy-to-use solutions for a wide range of applications:

• Adjustable switching frequency (RT)
• Synchronization to an external clock (CLK jumper)
• FPWM variant (LMQ61460AFS) (IC swap)
• Power-good flag (PG jumper)
• Precision enable (EN jumper with RENT and RENB resistors)

Automatic frequency foldback at light load and optional external bias improve efficiency over the entire load range. The device requires few external components and has a pinout designed for optimal EMI and thermal performance. Protection features include the following:

• Thermal shutdown
• Input undervoltage lockout
• Cycle-by-cycle current limiting
• Hiccup short-circuit protection

For a quick reference, Figure 1-1 shows the pin configuration of the LMQ61460-Q1.

Figure 1-1 LMQ61460-Q1 Pin Configuration (Top View)