The AAT2820's switching frequency is 1MHz, allowing designers to use ultra-small external capacitors. It incorporates a soft-start circuit that prevents the device from being damaged by oversized inrush current during startup. Its low-power shutdown feature disconnects the load from Vin, reducing quiescent current to less than 0.1μA. Its thermal protection circuit turns off all charge pumps when the die temperature exceeds a preset value. Pharmaceutical Raw Materials Coenzyme,Pharmaceutical Raw Materials Coenzyme,Antioxidant Coenzyme Q10,Stable Supply Of Coenzyme Q10 Jinan Hongyuan Chemical Co.,Ltd , https://www.mingyachem.com
Both the Von and Voff output voltages use an external diode and a capacitor multiplier to regulate the output. Because the AAT2820 does not use high inductance, it is possible to design ultra-thin products with a height of only 0.8mm.
AnalogicTech Introduces Three Output Charge Pump Regulators
Advanced Analogic (AnalogicTech) recently introduced a three-output charge pump regulator - the AAT2820 for battery-powered portable products. To meet the market demand for TFT LCDs and CCD image sensors , this power management device provides three adjustable output voltages for opening the gate drive bias (Vpos), closing the gate voltage bias (Vneg) and logic voltage.