Description

The MAX77503 is a synchronous 1.5A step-down DC-DCconverter optimized for portable 2-cell and 3-cell battery-operated and USB-C applications. The converter operateson an input supply between 3V and 14V. Outputvoltage is adjustable between 0.8V and 5V in 50mV steps through an I2C serial interface or 1.55V to 99% of the supplyvoltage with external feedback resistors. Factory-programmeddefault voltages of 1.2V, 1.8V, and 3.3V are offeredto reduce component count for common rails. The device features a low-IQ SKIP mode which allows excellentefficiency at light loads.Dedicated enable and power-OK pins allow simple hardware control. An I2C serial interface is optionally used forfull configuration and control for dynamic voltage scaling and system power optimization.Built-in undervoltage lockout (UVLO), output active discharge,cycle-by-cycle current limit, thermal shutdown,and short-circuit protection ensure safe operation under abnormal operating conditions.The MAX77503 is available in a 12-bump, 0.4mmpitch wafer-level package (WLP). Design Solution: How to Extend the Run-Time of Your DSLR/DSLM CameraDesign ›Applications2-cell/3-cell High Power Density SuppliesDrones, HD Cameras, and Notebook ComputersPortable Li+/Li-ion Battery Powered DevicesSpace-Constrained Portable Electronics