DESCRIPTION

A7542 is an asynchronous PWM boost converter using a constant frequency peak current mode. An external Schottky diode is needed. At light load, A7542 works in the light load mode. The supply current during the light mode is 100uA and less than 1uA in shutdown mode, together with the 130mΩ internal NMOS power transistor guarantees high efficiency in the whole output load current range. Up to 3A peak current, Let A7542 can provide 1.5A output load current, which is suitable to use as MID and mobile power supply. The input voltage 2.5~5.5V.The operating frequency is internally set at 1MHz.

The A7542 is available in SOT-26 package.

FEATURES

 High Efficiency: Up to 92

 1.0MHz Constant Switching Frequency

 Switch current up to 3A

 Low R DS(ON): 0.13Ω

 Accurate Reference:0.6V

 Tiny External Components

 <1μA Shutdown Current

 Available in SOT-26 Package

APPLICATION

 WLED Drivers

 Networking cards powered from PCI or PCI-express slots