XC9802

XC9801/XC9802 Series Regulated Voltage Step-Up Charge Pump ICs ETR08004-007b ■ GENERAL DESCRIPTION The XC9801 series are fixed regulated voltage step-up charge pump ICs which provide stable, highly efficient, positive voltages with the only external components required being 2 capacitors. Since regulating is done via the control of the charge pump's gate voltage waveform, ripple is minimal. Output voltage is selectable in 100mV steps within a 2.5V ~ 6.0V range. Control of the XC9802 switches to PFM (pulse skip) during light loads without affecting output impedance or ripple so that the IC is protected against drops in efficiency. Connecting the SENSE pin to the GND pin allows the IC to be used as a voltage doubler. As well as the ultra small MSOP-8A and USP-8 and USP-8B05 packages, the small consumption current and high efficiencies of the series make the XC9801 suitable for use with all types of battery operated applications. ■APPLICATIONS ●Power supplies for TFT ●Power supplies for Opamp ●Smart card ●On board local power supplies ●Various battery powered devices ■FEATURES Input Voltage Range : 1.8V ~ 5.5V Output Voltage Range : 2.5V ~ 6.0V Small Input Current : 80μA (no load:XC9802) Output Current : 80mA (3.6V→5.0V step-up) Oscillation Frequency : 300 kHz Stand-by Current (CE ’L’) : 2.0μA (MAX.) PFM Operation During Light Loads (XC9802) CE (Chip Enable) Function Can be used as a step-up doubler (sense = 0V) Packages : MSOP-8A, USP-8, USP-8B05 Environmen...