SNVSBC9B November 2019 – August 2020 TPSM53604
The switching frequency of the TPSM53604 is set to 1.4 MHz, internal to the device. The switching frequency cannot be adjusted. When the load current is high enough and the device is operating in PWM mode, the device operates at a fixed frequency. As the load current drops and the device switches to PFM mode, the switching frequency is reduced, resulting in reduced power dissipation. See Section 7.4.2 for typical information on when the device switches from PWM mode to PFM mode.