The XC9501 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functional, dual step-up DC/DC converter controller ICs.
The XC9501 Series are dual‑channel step‑up DC/DC controller ICs with PWM and PWM/PFM automatic switching. They operate from a 0.9 V internal reference and support output voltages from 1.5 V to 30 V with a typical switching frequency of 180 kHz. The device offers selectable control modes, a 10 ms soft‑start, and low standby current.
The document provides pin descriptions, absolute maximum ratings, electrical characteristics, typical application circuits, and guidelines for setting output voltage using external resistor networks. Custom switching frequencies of 100 kHz, 300 kHz, and 500 kHz are also available.
| Input Voltage Range | 0.9 V ~ 10 V |
|---|---|
| Output Voltage Range | 1.5 V ~ 30 V |
| Switching Frequency (default) | 180 kHz (±15%) |
| Stand‑by Current | 3.0 µA |
| Maximum Duty Cycle | 80 % (typ.) |
| Soft‑Start Time | 10 ms (typ.) |
The soft‑start time is internally set to 10 ms to protect against inrush current and voltage overshoot.
The default switching frequency is 180 kHz, and custom frequencies of 100 kHz, 300 kHz, and 500 kHz can be requested.
The maximum duty cycle is 80 % typical.