Products - Multi-Channel

XC9503 2-Channel DC/DC Controllers

2-Channel DC/DC Controllers image


Property XC9503
Output Current Iout=~1000mA (Vin=5.0V, Vout3.3V)
Input Voltage 2.0 ~ 10V
Output Current ADJ=0.9V
Oscillation Frequency 180kHz, 300kHz, 500kHz
Quiescent Current 60µA
Packages MSOP-10, USP-10

Product Description

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.


  • 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

XC9503 Typical Application Circuit