XC9504 series are PWM control, PWM/PFM switching, 2 channel (step-up and inverting) DC/DC controller ICs.
The XC9504 series are dual‑channel DC/DC controller ICs offering a step‑up converter on channel 1 and an inverting converter on channel 2. They support PWM control and PWM/PFM automatic switching, with a built‑in 0.9 V reference and a 180 kHz oscillator that can be customized.
The document provides detailed pin configurations, absolute maximum ratings, electrical characteristics, typical application circuits, and formulas for setting output voltages. It also lists ordering information, package options, and recommended external component values for optimal performance.
| Output Voltage Range (Channel 1) | 1.5 V ~ 30 V |
|---|---|
| Output Voltage Range (Channel 2) | -30 V ~ 0 V |
| Supply Voltage Range | 2.0 V ~ 10.0 V |
| Oscillation Frequency | 180 kHz (±15%) |
| Maximum Duty Cycle | 80 % (typical) |
| Soft‑Start Time (Channel 1) | 10 ms |
Channel 1 can be set to any voltage between 1.5 V and 30 V.
The control mode is switched by external signals on the PWM pins; a voltage below 0.2 V selects PWM/PFM automatic switching, while a voltage above 0.65 V selects PWM control.
The IC operates with a supply voltage between 2.0 V and 10.0 V.
The controller normally oscillates at 180 kHz, with custom options up to 500 kHz.