General Description

The MAX8875 low-dropout linear regulator operates from a +2.5V to +6.5V input range and delivers up to 150mA. A P-channel MOSFET pass transistor allows its 85μA supply current to remain independent of the load, making this device ideal for battery-operated portable equipment such as PCS phones, cellular phones, cordless phones, and modems.

The MAX8875 features a power-OK (POK) output that indicates when the output is out of regulation. The device is available in several preset output voltage versions: 5.0V, 3.3V, 3.0V, 2.7V, 2.5V, or 1.5V. Other features include 1μA (max) shutdown current, short-circuit protection, thermal shutdown protection, and reverse-battery protection. The device comes in a miniature 5-pin SOT23 package.

Features

? Power-OK Output

? Small Output Capacitor (1μF ceramic)

? Preset Output Voltages (±1 accuracy)

? Guaranteed 150mA Output Current

? 85μA No-Load Supply Current

? Low 110mV Dropout at 100mA Load (165mV at 150mA load)

? Thermal-Overload and Short-Circuit Protection

? Reverse-Battery Protection

? 60dB PSRR at 100Hz

? 1μA max Shutdown Current

Applications

? PCS Telephones

? Hand-Held Instruments

? Cellular Telephones

? Palmtop Computers

? Cordless Telephones

? Electronic Planners

? PCMCIA Cards

? Modems

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