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TOREX XCL101

Ultra Low Power, Step-Up Micro DC/DC Converter with Integrated Coil

The XCL101 series is a step-up micro DC/DC converter with integrated coil in an ultra-small 2.5x2.0x1.0mm CL-2025 package.

As the basic DC/DC chip, TOREX uses there popular XC9140. A stable and efficient power supply circuit can be configured by simply adding only two ceramic capacitors externally, thereby contributing to PCB space saving and the shortening of development time. Able to start operation from Input Voltages as low as 0.9V, the XCL101 is suitable for use with single alkaline or nickel metal hydride cells.

Like all step-up DC/DCs, the output current that the XCL101 can supply will depend on the (VIN, VOUT) conditions, but up to 100mA of output current can be supplied with VIN=1.8V and VOUT=3.3V and with a VIN=0.9V, more than 50mA is possible. With a quiescent current of only 6.3µA (Typ), reducing to 0.1µA (Typ) during standby, the XCL101 helps to maximise battery life in portable applications in addition to saving PCB space. The XCL101 series also features a load disconnect function that prevents the battery charge from leaking to the output while the IC is not operating (XCL101A) and an Input by-pass mode function type is also available to keep the connection between the input and output side during shutdown (XCL101C). In addition, a built in inrush current protection circuit suppresses inrush current spikes at start-up which results in a more stable power supply which in turn extends battery life.

The input voltage range is from 0.9V to 5.5V and the output voltage can be selected, in 0.1V steps, within a range of 1.8V to 5.0V.

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