QX2303
QX2303 is PFM Step-Up DC-DC Converter manufactured by SHIWEI.
PFM Step-Up DC-DC Converter
General Description
The QX2303 Series are PFM step-up DC-DC converters with very low ripple noise due to the high operation frequency. The maximum operation frequency is 260KHz.
Only three ponents are required to realize the conversion from the battery voltage to a selected output voltage.
A driver pin (EXT) is provided for driving external power transistor to extend the output current capability where large current is required.
Enable pin (EN) is also provided so that the circuit can be powered down.
Ordering Information
QX2303 X X X X
Package Type:
T: SOT-23-3 F: SOT-23-5 E: SOT-89
Output Voltage:
20: 2.0V 21: 2.1V … 49: 4.9V 50: 5.0V
External switch E: use external switch L: use internal switch
Features y 260KHz Maximum Operation Frequency y 2.0V to 5.0V Output Voltage With 0.1V Step y Low Start-up Voltage: 0.8V at 1m A y ±2.5% Output Voltage Accuracy y Up to 87% Efficiency y Output current: 300m A at 2.5V input, 3.3V output y Low Ripple...
