The XC9505 series are PWM control, PWM/PFM switching, 2 channel (step-down and inverting) DC/DC controller ICs.
The document describes the XC9505 series as 2-channel DC/DC controllers featuring one step-down output (Output 1) and one inverting output (Output 2). The device supports a power supply voltage range of 2.0V to 10V and offers an oscillation frequency of typically 180kHz, with custom options for 300kHz and 500kHz.
Key features include PWM or automatic PWM/PFM switching control, soft-start functionality internally set to 10msec for Output 1, and a maximum duty ratio of 100% for step-down and 80% for inverting modes. The IC is available in an MSOP-10 package.
| Power Supply Voltage Range | 2.0V ~ 10.0 V |
|---|---|
| Output 1 Voltage Range (Step-Down) | 0.9V ~ 6.0V |
| Output 2 Voltage Range (Inverting) | -30V ~ 0V |
| Oscillation Frequency | 180kHz (±15%) |
| Maximum Duty Ratio Step-Down | 100 % |
| Maximum Duty Ratio Inverting | 80% (Typ.) |
| Package Type | MSOP-10 |
| Stand-By Current | 3.0µA (MAX) |
The typical oscillation frequency is 180kHz, with a tolerance of ±15%.
Yes, the control can be switched between PWM control and PWM/PFM automatic switching using external signals.
The soft-start time is internally set to 10msec for Output 1.