DESCRIPTION

The A7530A 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. With the A7530A Series, a step-up switching regulator can be configured by using an external coil and capacitor. A protection circuit turns off the built-in MOSFET when the voltage at the CONT pin exceeds the limit to prevent it from being damaged. This feature, along with the mini package and low current consumption, makes the A7530A Series ideal for applications such as the power supply unit of portable equipment.

The A7530A is available in SOT-23 and SOT-25 packages.

FEATURES

? High efficiency:95

? Highest switching frequency:300k Hz

? Low input current: 15uA

? Output voltage:2.5~5.0V(step 0.1V)

? Accuracy of ±2.5

? Input voltage:0.9V~5.0V

? Low Ripple, Lo w Noise

? Available in SOT 23 and SOT 25 p ackage s

APPLICATION

? Power supply for portable equipment such as

digital cameras, electronic notebooks, and PDA

? Power supply for audio equipment such as

portable CD/MD players

? Constant voltage power supply for cameras,

video equipment, and communications

equipment

? Power supply for microcomputers