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