Inductor Built-in Step-Up “micro DC/DC” Converters
The XCL101 series is a synchronous step-up micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.5mm×2.0mm, h=1.00mm). A stable power supply with a configured using only two capacitors connected externally. An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuit wiring. A wide operating voltage range of 0.9V to 5.5V enables support for applications that require an alkaline battery (1-cell) or Ni-HM (1-cell) power supply. The output voltage can be set from 1.8V to 5.0V (±2.0%) in steps of 0.1V (semi custom). PFM synchronous control enables a low quiescent current, making these products ideal for portable devices that require high efficiency. The XCL101 features a load disconnect function to break continuity between the input and output at shutdown (XCL101A), and also a bypass mode function to maintain continuity between the input and output (XCL101C).
Typical Application Circuit

Features
| Input Voltage Range | 0.9V~5.5V |
|---|---|
| Output Voltage Range | 1.8V~5.0V(±2.0%) (0.1V increments) |
| Output Current | 100mA@VOUT=3.3V,VBAT=1.8V(TYP.) |
| Quiescent Current | 6.3μA(VBAT=VOUT+0.5V) |
| Control Methods | PFM Control |
| PFM Switching Current | 350mA |
| Functions | Load Disconnection Function or Bypass Mode Function Ceramic Capacitor Compatible |
| Operating Ambient Temperature | -40~+85℃ |
| Environmentally Friendly | EU RoHS compliant, Pb free |




