XC6367 Series

PWM Control, PWM/PFM Switchable Step-up DC/DC Controller

The XC6367 series are multi-functional step-up DC/DC converter controllers with built-in high speed, low ON resistance drivers. Large output currents are possible using an externally connected transistor, coil, diode and capacitor. Output voltage is selectable in 0.1V steps within a range of 1.5V ~ 6.5V (±2.5%). For output voltages outside this range, we recommend FB version, which has a 1.0V internal reference voltage. Using the FB version, the required output voltage can be set-up using 2 external resistors. With a 300kHz oscillation frequency, the size of the external components can be reduced.

Soft start time of XC6367A, B, and C series is internally set to 10msec and XC6367C, D, and F series regulate soft-start time by connecting resistors and capacitors externally. During stand-by (CE pin "Low"), quiescent current is reduced to less than 0.5μA.

Typical Application Circuit


Input Voltage Range 0.9V~10V
Power Supply Voltage Range 2.0V~10V
Output Voltage Range 1.5V~6.5V (0.1V increments)
Accuracy ±2.5%
Oscillation Frequency 300kHz,100kHz(±15%), Custom products for 180kHz,500kHz
Output Current More than 200mA (VIN=1.8V,VOUT=3.3V)
High Efficiency 84%(TYP.)
Stand-by Current ISTB=0.5μA(MAX.)
Soft-Start Time Externally type possible



Quality Reports


QuestionWhat is the soft-start function?

The function to soften the rise to prevent the inrush current.

QuestionWhat is the standby current?

The current that flows through the IC in the standby mode. The standby mode means the state where the IC has been turned off by the CE function.

QuestionWhat does the FB product mean?

An IC for which any output voltage can be set by the reference voltage of the FB pins and the external dividing resistor. The output voltage is determined by the RFB1 and RFB2 values, using the following formula: VOUT = Vref × (RFB1 + RFB2)/RFB2