General Description

The MAX8530/MAX8531 offer the benefits of lowdropout voltage and ultra-low power regulation in subminiaturized UCSP and QFN packages with an integrated microprocessor reset circuit (MAX8530 only). The devices operate from a 2.5V to 6.5V input and deliver up to 200mA and 150mA outputs with low dropout of 100mV (typ) at 100mA. Designed with an internal P-channel MOSFET pass transistor, the supply current is kept at a low 130µA (with both LDOs on), independent of the load current and dropout voltage. Other features include short-circuit protection and thermal-shutdown protection.

Features

♦ Guaranteed 200mA Output Current for OUT1

♦ Guaranteed 150mA Output Current for OUT2

♦ Low 100mV (typ) Dropout at 100mA Load for both LDOs

♦ Open-Drain, Active-Low 100ms (min) Reset Timer (MAX8530)

♦ Low 40µVRMS Output Noise (MAX8531)

♦ Low 130µA Operating Supply Current

♦ <1µA Shutdown Current

♦ Thermal-Overload and Short-Circuit Protection

♦ Output Current Limit

♦ Tiny Packages Available

    1.16 x 1.57 x 0.6mm UCSP (3 x 2 Grid) 3mm x 3mm Thin QFN

Applications

    Cellular and Cordless Phones

    PDAs and Palmtop Computers

    Notebook Computers

    Digital Cameras

    PCMCIA Cards

    Wireless LAN Cards

    Hand-Held Instruments