Torex Semiconductor, Ltd.

XC9131 Series DC/DC Converter

1 A step-up DC/DC converter with built-in transistor from Torex Semiconductor

Torex Semiconductor Ltd's XC9131 Series ConvertersTorex's XC9131 series are synchronous step-up DC/DC converters with a 0.2 Ω N-channel driver transistor and built-in 0.2 Ω synchronous P-channel switching transistor. A highly efficient and stable current of up to 1.0 A can be supplied by reducing ON resistance of the built-in transistors. This series of converters can start operation under the condition which has 0.9 V input voltage to generate 3.3 V output voltage with a 33 Ω load resistor. This is suitable for mobile equipment using only one alkaline battery or one nickel metal hydride battery. During shutdown, the load disconnection function can cut the current conduction path from the input to the output.

Features Applications
  • Input voltage range: 0.65 V ~ 5.5 V
  • Fixed output voltages: 1.8 V ~ 5.0 V (0.1 V increments)
  • Voltage adjustable type: 0.50 V ±0.01 V
    (set up with external components)
  • Oscillation frequency: 1.2 MHz (±15%)
  • Input current: 1.0 A
  • Output current : 500 mA @ VOUT=3.3 V, VIN=1.8 V
  • Power supplies using batteries such as alkaline (1 to 3 cells), nickel metal hydride, or lithium ion (1 cell)
  • Digital audio
  • Digital video equipment
  • Wireless mice
Published: 2009-12-07