XC9503 series
2-Channel DC/DC Controllers
The X9503 is a dual channel Step-down DC/DC controller IC. Output voltages are individually set-up externally, using two resistors and the control of the XC9503 series can be switched between PWM and PFM/PWM auto-switching using the MODE pin.
Control switches from PWM to PFM during light loads when auto-switching is selected. This maximises the efficiency across all output loads. In PWM mode noise is easily reduced since the switching frequency is fixed.
Features:
- Input Voltage: 0.9V ~ 10.0V
- Output Voltage Range:
- Output 1: 0.9V ~ 6.0V
- Output 2: 0.9V ~ 6.0V
- Switching Frequency: 180kHz, 300kHz & 500kHz
- Standby Current: 3.0μA (max)
- Soft Start internally set-up
- Output Voltage externally set-up
- PWM, PWM/PFM switching control
Packages: MSOP-10
, USP-10
| Property | XC9503 |
| Type | Dual Step-Down |
| Control | PWM or PFM/PWM |
| MOSFET | External |
| Typical Efficiency (%) | 92 |
| Min Operating Voltage (V) | 2 |
| Max Operating Voltage (V) | 10 |
| Min Output Voltage (V) | 0.9 |
| Max Output Voltage (V) | 6.0 |
| Accuracy (%) | 2 |
| Min Switching Frequency (kHz) | 300 |
| Max Switching Frequency (kHz) | 300 |
| Built-In Voltage Detector | No |
| Built-In Voltage Regulator | No |
| Max Output Current (mA) | 1500 |
| Quiescent Current (uA) | N/A |
| Packages | MSOP-10 |
