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.

Features

♦ Optimized for Low-Cost Tantalum Capacitors

♦ Pin Compatible with MIC5206

♦ Undervoltage Power-OK Output

♦ 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 Phones

   Modems

   Cellular Phones

   Hand-Held Instruments

   Cordless Phones

   Palmtop Computers

   PCMCIA Cards

   Electronic Planners