XC9201

The XC9201 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 3.0A.

With output voltage fixed internally, VOUT is selectable in 0.1V steps within a 1.2V - 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 2 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 resistors and capacitors.

During shutdown (CE pin =L), consumption current can be reduced to as little as 0.5μA (TYP.) or less and with U.V.L.O (Under Voltage Lock Out) built-in, the external transistor will be automatically shut off below the regulated voltage.