MAX8875

19-1556; Rev 0; 10/99 150mA, Low-Dropout Linear Regulator with Power-OK Output 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 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, or 2.5V. 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. The MAX8875 is optimized for use with a 1µF ceramic output capacitor. For a pin-compatible, functionally equivalent device for use with a higher ESR output capacitor, see the MAX8885 data sheet. o Power-OK Output o Small Output Capacitor (1µF ceramic) o Preset Output Voltages (±1% accuracy) o Guaranteed 150mA Output Current o 85µA No-Load Supply Current o Low 110mV Dropout at 100mA Load (165mV at 150mA load) o Thermal-Overload and Short-Circuit Protection o Reverse-Battery Protection o 60dB PSRR at 100Hz o 1µA max Shutdown Current Features MAX8875 Applications PCS Telephones Cellular Telephones Cordless Telephones PCMCIA Cards Hand-Held Instruments Palmtop Compute...