MAX8885

19-1576; Rev 0; 10/99 150mA, Low-Dropout Linear Regulator with Power-OK Output General Description The MAX8885 low-dropout (LDO) linear regulator operates from a +2.5V to +6.5V input voltage range and delivers up to 150mA. It uses a P-channel MOSFET pass transistor to allow a low 85µA supply current—which is independent of the load—as well as LDO voltage. The MAX8885 is optimized to operate with low-cost, high-ESR output capacitors such as small case-size tantalum capacitors. It is ideal for cost-sensitive portable equipment such as PCS and cellular phones. For a pin-compatible, functionally equivalent device for use with a low-ESR, ceramic output capacitor, refer to the MAX8875 data sheet. The MAX8885 features a power-OK output that indicates when the output is out of regulation, and is available in preset output voltage versions of 5.0V, 3.3V, 3.0V, 2.7V, and 2.5V. Other features include 1µA (max) shutdown current, short-circuit protection, thermal shutdown protection, and reverse-battery protection. The MAX8885 is available in a miniature 5-pin SOT23 package. o Pin Compatible with MIC5206 o Undervoltage Power-OK Output 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 o Optimized for Low-Cost Tantalum Capacitors MAX8885 Applicati...