The NR131S from Sanken Electric is a Step-Down Buck Regulator IC that is ideal for LCD TV, blue-ray, set-top boxes, green electronic products and other power supply applications. It requires an input voltage of 4.5 - 17 V. This power management IC (PMIC) features current mode PWM control and has high efficiency at normal load as well as light load conditions. It is stable with a low ESR ceramic output capacitor and offers an adjustable soft-start with an external capacitor. This 350 kHz fixed frequency PMIC benefits from over-current, under-voltage lockout and over-temperature protection circuits to prevent over-load or thermal breakdown-related damages. It is available in a surface-mount package that measures 6.0 x 4.9 x 1.4 mm.