SLVSBV8E June 2013 – February 2020 LMZ31704
The LMZ31704 operates in pulse skip mode at light load currents to improve efficiency and decrease power dissipation by reducing switching and gate drive losses.
These pulses may cause the output voltage to rise when there is no load to discharge the energy. For output voltages < 1.5 V, a minimum load is required. The amount of required load can be determined by Equation 2. In most cases, the minimum current drawn by the load circuit will be enough to satisfy this load. Applications requiring a load resistor to meet the minimum load, the added power dissipation will be ≤ 3.6 mW. A single 0402 size resistor across VOUT and PGND can be used.
When VOUT = 0.6 V and RSET = OPEN, the minimum load current is 600 µA.