JAJSJO5B October 2022 – August 2024 LM64440-Q1 , LM64460-Q1
PRODUCTION DATA
Figure 8-2 shows the schematic diagram of a synchronous buck regulator with an output voltage set at 5V and a rated load current of 4A. In this example, the target half-load and full-load efficiencies are 94.25% and 94%, respectively, based on a nominal input voltage of 13.5V that ranges from 5V to 36V. The switching frequency is set at the default 2.1MHz of the LM64440-Q1. The BIAS input is connected to the 5V output, thus reducing IC bias power dissipation and improving efficiency performance. Connecting MODE/SYNC to GND configures the LM64440-Q1 for AUTO mode with spread spectrum enabled.