When LED+ and LED– are shorted, V_FB is higher than internal reference voltage, V_REF, and internal error amplifier output voltage V_COMP is driven low and clamped. The high-side MOSFET is forced to turn on with the minimum on-time each cycle, t_{MIN_ON}. In this case, if the output voltage is too low, the inductor current cannot balance in a cycle, causing current runaway. Finally, the inductor current is clamped by low-side MOSFET sourcing current limit I_{LIM_LS_SOUR} which is 3-A typical. If V_FB rises higher than V_{FB_OVP}, the device starts the auto-retry timer. After the counter, t_{RETRY_ON}, expires, the device shuts down and starts another counter, t_{RETRY_OFF}. During the shutdown period, both high-side and low-side MOSFETs are turned off. After the hiccup timer expires, TPS92200 restarts again. The device repeats these behaviors until the failure condition is removed. During the auto-retry mode, the device is also protected by the overcurrent limits of both high-side power switch and low-side power switch.