This document describes an application example of the SMB113 four-channel programmable DC-DC controller. It features digital programming and non-volatile memory for programming major parameters such as output voltage set point, input/battery voltage monitoring, output power-up/down sequencing, digital soft-start and output slew rate, output voltage margining, UV/OV monitoring of all outputs, and independent enable/disable outputs via the I2C interface. It also includes a user-friendly graphical user interface (GUI), four synchronous step-down output channels, an input range of +2.7V to +6.0V, highly accurate reference and output voltage, and low power mode.