MP5496GR

The MP5496 is a complete power management solution that integrates four high-efficiency, step-down DC/DC converters, five low-dropout (LDO) regulators, and a flexible logic interface. A DC/DC converter with constant-on-time (COT) control provides fast transient response. The default 1.5MHz fixed switching frequency during continuous conduction mode (CCM) greatly reduces the external inductor and capacitor values. Full protection features include under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown. The output voltage can be adjusted through the I2C interface, or it can be preset by the one-time programmable (OTP) memory. The start-up and shutdown sequences can be configured via the OTP. By using the I2C or OTP, the MP5496 can be utilized to configure the buck and LDO output voltages, mode, buck 1 and buck 3 current limits, and the enable function for all the buck converters and LDOs (ENBUCK/LDO). When using only the I2C interface, the MP5496 allows users to configure the buck 2 and buck 4 current limits, slew rate (DVS slew rate), discharge (DISCHG), system enable (SYSEN), and software reset (SFRST). Status and ID2 registers can also be read via the I2C. Additional features, such as AUTOON, frequency, power-on delay, RST delay, push button time, LDORTC output voltage, OTP version, and the I2C slave address can only be configured via the OTP. The MP5496 requires a minimal number of external components. It is available in a space-saving QFN-28 (4mmx4mm) package.