AP2201 - Chipown

AP2201 PFM Control Step-Up Switching Regulator

The AP2201 Series is a CMOS PFM-control step-up switching regulator that mainly consists of a reference voltage source, an oscillator, and a comparator, enabling products with a low ripple over a wide range, high efficiency, and high output current. Products with a fixed duty ratio of 75 % （ Lower Output Voltage ） or 88%(Higher Output Voltage) are also avail.

Features

z Low voltage operation: Startup at 0.9 V min (Iout 1 mA) guaranteed z Low input current: 2.3uA (Vout 3.3 V) z Duty ratio: 75 % Built-in fixed-type PFM controller z External parts: Coil, capacitor, and diode z Output voltage: Settable to between 1.5 to 6.0V accuracy of 2% Applications z Power supply for portable equipment such as digital cameras, electronic notebooks, and PDA z Power supply for audio equipment such as portable CD/MD players z Constant voltage power supply for cameras, video equipment, and communications equipment z Power supply for microcomputers Package z S0T-23-3 z SOT-89.