Delivering up to 120 mA, the MAX8863 is a fixed output, low–dropout linear regulator that operates from a +2.5 V to +6.0 V input range. The 50 µA supply current remains independent of load, making these devices ideal for battery–operated portable equipment.

The output of the MAX8863 is preset at 3.15 V, 2.84 V, 2.80 V or 1.80 V. (Other output voltage options are available – contact ON Semiconductor for more information.) The MAX8863 is pin–compatible with the Maxim MAX8863 LDO and is available in the SOT–23–5 package.

Features

• Low Cost

• Pin–Compatible with MAX8863

• Stable with Any Type of Capacitors

• Low, 55 mV Dropout Voltage @ 50 mA IOUT

• Low, 50 µA Operating Supply Current (Even in Dropout)

• 140 µsec (Typ.) Turn–On Response Time from SHDN

• Low, 350 µVRMS Output Noise

• Miniature External Components

• Thermal Overload Protection

• Output Current Limit

• Low–Power Shutdown Mode

Applications

• Cordless, PCS, and Cellular Telephones

• PCMCIA Cards

• Modems

• Hand–Held Instruments

• Palmtop Computers

• Electronic Planners