Expanded Lineup of Highly Functionality, 1.4A Step-up DC/DC Converters XC9147 / XC9148 Series

Torex Semiconductor Ltd. (Tokyo Japan: President, Koji Shibamiya, 6616: 1st section at Tokyo Stock Exchange) has launched Highly functionality, 1.4A Step-up DC/DC Converters--XC9147/XC9148 series.

XC9147/XC9148 series are synchronous step-up DC/DC converters with a 0.17Ω(TYP.) Nch driver FET and a 0.2Ω(TYP.) synchronous Pch switching FET built-in. The series are able to start operation from an input voltage of 0.9V, suitable for equipment using single Alkaline battery or Nickel metal hydride battery. The output voltage range is 1.8V to 5.5V and can be set in 0.1V increments. In the same size package, this product achieves 1.5 times the output current compared to previous products. In addition, the product can choose 3 kinds of standby mode functions, further reducing the power consumption of IC-equipped devices and extending battery life.

The A/D/G/J types equipped load disconnection and CL discharge functions to reduce the output voltage at a high speed to prevent the output device from malfunctioning.
The B/E/H/K type corresponds to a large range of working voltages such as microcomputers. In the standby state, the input and output are conducted by the bypass function, the battery voltage is supplied as it is, and the subsequent device is driven.Boosting only when a constant voltage such as 3.3V is required will greatly help reduce overall power consumption.The C/F/M/L types are ideal for parallel connection (OR connection) of multiple power supplies and backups. The load disconnection function cuts off the continuity between the input and output, and also makes an OR connection to the output with other power supplies. In addition, it supports automatic switching with other power supplies connected by OR during operation.
The G/H/M/J/K/L types equipped UVLO function, which can stop IC operation when the battery voltage is too low, which can reduce the leakage of alkaline batteries. The UVLO detection voltage is 1.46V.

Fig1. XC9147/XC9147 Mounting Board

Fig2.「USP-6C」Package (1.8x2.0xh0.6mm)