MAX77801 Buck-Boost Regulator Evaluation Kit

The MAX77801 is a high-current, high-efficiency buck boost targeted to mobile applications that use a Li-ion battery or similar chemistries. The MAX77801 utilizes a four switch H-bridge configuration to support buck and boost operating modes. Buck-boost provides 2.60V to 4.1875V of output voltage range and up to 2A output current. A unique control algorithm allows high efficiency, outstanding performances in line/load transient response, and seamless transition between buck and boost modes. DVS (dynamic voltage scaling) input allows the host processor to switch between two preprogrammed output voltages. This feature minimizes power loss for given load conditions. The ramp-up and ramp-down slew rates are programmable through I2C. The MAX77801 features I2C-compatible, 2-wire serial interface consisting of a bidirectional serial-data line (SDA) and a serial-clock line (SCL). It supports SCL clock rates up to 3.4MHz.

• 2A High-Efficiency Buck and Boost Operation Including Seamless Transition Between Buck and Boost Mode
• Flexibility Supports Various Designs
  • Vout Range from 2.60V to 4.1875V with 12.5mV Step
  • High-Speed (Up to 3.4MHz) I2C Serial Interface
• Low Quiescent Current, High Efficiency, and Dynamic Voltage Scaling Enable System to Be More Efficient
  • DVS Input
  • Up to 97% of Peak Efficiency
  • 55µA Quiescent Current
• High Switching Frequency and Small Package Reduce Solution Size
  • 2.5MHz Switching Frequency
  • 20-Bump WLP (0.4mm Pitch)
• Safety Features Enhance Device and System Reliability
  • POK Output
  • Soft-Start
  • True Shutdown™
  • Thermal Shutdown and Short-Circuit Protection