The XC9101 series is a PWM controlled step-up DC/DC controller with multiple current and voltage feedback functions. Current sense, clock frequencies, and amp feedback gain can all be externally regulated. It allows for a stable power supply with output currents of up to 1.5A. The output voltage is fixed internally and can be selected in 0.1V increments within a range of 2.5V ~ 16.0V (±2.5%). For output voltages outside this range, the FB version with a 0.9V internal reference voltage is recommended. Using this version, the required output voltage can be set using 2 external resistors. The switching frequency can also be set externally within a range of 100 ~ 600 kHz, allowing for selection of a frequency suited to the specific application. The current sense function enables control of peak currents flowing through the driver transistor and coil. The soft-start time can be adjusted using an external resistor and capacitor. During shutdown (CE pin=L), the consumption current can be reduced to as little as 0.5μA (TYP.) or less.
The XC9101 Series are PWM‑controlled step‑up DC/DC controller ICs offering multiple current and voltage feedback, external regulation of current sense, clock frequency and gain, and output currents up to 1.5 A. They are intended for portable electronics such as mobile phones, PDAs, cameras and notebook PCs.
The datasheet details general description, pin configuration, electrical characteristics, typical application circuits, operational explanation, functional settings, packaging information and marking rules, enabling designers to integrate the device into their power‑supply designs.
| Output Voltage Range | 2.5 V ~ 16.0 V (fixed) or up to 30 V (adjustable) |
|---|---|
| Maximum Output Current | 1.5 A |
| Oscillation Frequency Range | 100 kHz ~ 600 kHz |
| Operating Ambient Temperature | -40 °C ~ +85 °C |
| Package Types | MSOP‑8A, SOP‑8 |
The device can deliver up to 1.5 A of output current.
A ceramic capacitor between 150 pF and 220 pF is recommended for the external clock circuit.
Soft‑start is achieved by connecting a resistor and capacitor to the CE/SS pin; it remains active until the CE pin voltage reaches about 1.55 V.