Products - Step-Up

20V PWM Controlled Step-Up DC/DC Controller

This part is not recommended for new designs, please use XC9120

The XC9101 series are step-up multiple current and voltage feedback DC/DC controller ICs. Current sense, clock frequencies and amp feedback gain can all be externally regulated. A stable power supply is possible with output currents of up to 1.5A. The output voltage can be fixed internally in 100mV steps within a 2.5V-16.0V range (±2.5%).

For output voltages outside this range, we recommend the FB version which has a 0.9V internal reference voltage. Using this version, the required output voltage can be set-up using two external resistors.

Switching frequencies can also be set-up externally within a range of 100~600 kHz and therefore frequencies suited to your particular application can be selected. With the current sense function, peak currents (which flow through the driver transistor and the coil) can be controlled. Soft-start time can be adjusted using external resistor and capacitor. During shutdown (CE pin =L), consumption current can be reduced to as little as 0.5μA (TYP.) or less.

Features:

• Input Voltage: 2.5V ~ 20V
• Output Voltage:
  • 2.5V ~ 16.0V in 100mV steps
  • 30V+ with FB type (Vref = 0.9V) 
• Oscillator Frequency: 100KHz ~ 600KHz
• Stby Current Consumption: 0.5uA
• Built-in Over Current Protection Circuit
• Ceramic Capacitor Compatible