Texas Instruments LM74500-Q1 evaluation module (LM74500Q1EVM) helps designers evaluate the operation and performance of the LM74500-Q1 reverse polarity protection controller. This evaluation module demonstrates how an N-channel power MOSFET can be used to realize input reverse voltage protection with low I_Q and low-leakage current flowing through the IC. In this design scheme, the LM74500-Q1 is combined with a MOSFET and used in series with a battery as a replacement of a traditional PFET based reverse-polarity protection circuitry as shown in Figure 2-1. For more information on the LM74500 functional and electrical characteristics, see LM74500-Q1 reverse battery protection controller.

This section describes the jumpers and connectors on the EVM, and how to properly connect, setup, and use the LM74500Q1EVM. Ensure the power supply is turned off while making connections on the board.