XC9307 is a negative voltage output DC/DC converter in a small and thin package with a size of only 1.8 x 2.0 x 0.4mm.

The internal switching frequency is 2.5MHz, which allows users to choose a small, flat external coil.The height of the voltage inversion circuit including the external coil and capacitor can be 0.65 mm or less.

Compared with the charge pump type solution, even if the input voltage fluctuates, the switching method of XC9307 can still maintain a stable output voltage.In addition, this new DC/DC converter can support a maximum output current of 300mA (when VIN = 3.3V, VOUT = -3.0V).

Main features

series		XC9307	XC9308
Output current		300 mAh
Input voltage range		2.7V~5.5V
The output voltage		-3.2V~-3.6V
FB voltage		0.5V±10mV
VREF voltage		1.6V±40mV
Quiescent Current		250 microampere
way to control		Pulse width modulation	PWM / PFM
Oscillation frequency		2.5 MHz
protect the circuit		Current limit (1.1A TYP.)
		UVLO (2.1V)
Soft start time		External adjustment
Luck mb temperature		-40~105℃
Matching		USP-6EL