7.3.3 Bias Supply and Under Voltage Lockout

LMG1025-Q1 features nominal 5 V and maximum 5.25 V of supply voltage, and its absolute maximum supply voltage is 5.75 V. In the design, it is recommended to limit the variability of the power supply to be within 5% (0.25 V), and the overshoot voltage during switching transient not to exceed the absolute maximum voltage. Refer to Section VDD and Overshoot for more on the detailed design guide. LMG1025-Q1 also features internal undervoltage lockout (UVLO) to protect the driver and circuit in case of fault conditions. The UVLO point is setup between 4.0 V and 4.35 V with a hysteresis of 85mV. This UVLO level is specifically designed to guarantee that GaN power devices can be switched at a low R_DS(ON) region. During UVLO condition, the OUTL pin is pulled down to ground.