|Input Voltage||2.7V ~ 5.5V|
|Output Voltage||-3.2V ~ -3.6V|
Negative Voltage, Inverting DC/DC Converter
The XC9308 is a negative voltage output DC/DC converter, available in a small, low profile package measuring 1.8 x 2.0 x 0.4mm.
The internal switching frequency is 2.5MHz, which allows the user to select a small, low profile external coil. A voltage inverting circuit can be built with a height of 0.65 mm or less including the external coil and capacitors.
Compared to a charge pump type solution, the switching method of the XC9307 maintains a stable output voltage even when the input voltage fluctuates. In addition, this new DC/DC converters can support maximum output current 300mA (when VIN = 3.3V, VOUT = -3.3V).
Output voltage can be adjusted within the range of -1.2V to -6.0V using externally mounted resistors. The XC9308 uses PWM/PFM automatic switching control to ensure high efficiency at light load current and low noise at high load current.
For applications where low noise is important at lower loads, please check-out the XC9307 with fixed PWM switching control. Click here for details.