Torex Semiconductor LTD has released the high feature, 1.4A boost DC-DC converters - XC9147/XC9148 series. The series is a synchronous boost DC-DC converter with a built-in 0.17 ohm (typical)Nch driver FET and a 0.2 ohm (typical) synchronous Pch switching FET. The series can operate from an input voltage of 0.9V, making it ideal for devices using single alkaline or nickel metal hydride batteries. The output voltage range is 1.8V to 5.5V, which can be set in 0.1V increments. In the same size package, the output current of the product is 1.5 times that of the previous product. At the same time, three standby modes can be selected to further reduce the power consumption of IC devices and prolong the battery life.
A/D/G/J models are equipped with load disconnection and CL discharge functions to reduce output voltage at high speed and prevent output equipment failure.
B/E/H/K correspond to a wide range of operating voltages, including microcomputers. In the standby state, the input and output are enabled through the bypass function, and the battery voltage is provided as is, which drives subsequent devices. Boosting only when a constant voltage such as 3.3V is required will greatly help reduce overall power consumption.
The C/F/M/L type is ideal for multiple power supplies and backup power supplies in parallel (or connected). The load disconnection function can cut off the internal continuity of input and output and connect OR with other power sources. In addition, it supports automatic switching with other power sources connected via OR throughout the operation.
G/H/M/J/K/L has UVLO function, which can prevent IC from working when the battery voltage is too low and reduce leakage of alkaline battery. UVLO detection voltage is 1.46V.
