DESCRIPTION
During light load conditions, the regulator includes a PFM mode to enhance light-load efficiency. The regulator transitions smoothly between PWM and PFM modes. Synchronous rectification and automatic PWM/PFM transitions improve overall efficiency. The serial interface is compatible with Fast/Standard and High-Speed mode I2C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 6.25 mV, for reprogramming the mode of operation (PFM or Forced PWM) or disable/enabling the output voltage. Typical Application Circuit FEATURES
2.7V to 5.5V Input Voltage Range 3MHz Constant Switching Frequency 5A Available Load Current I2C Control Interface with Dynamic Voltage Scaling Support Programmable Output Voltage: 0.6V to 1.4V in 6.25mV Steps Small size, 0.33µH or 0.47µH Inductor Solution 52µA Typical Quiescent Current PFM/PWM Operation for Optimum Increased Efficiency Excellent Load and Line Transient...
