Products - Multi-Channel

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