MAX8885

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

Application

PCS Phones Modems
Cellular Phones Hand-Held Instruments
Cordless Phones Palmtop Computers
PCMCIA Cards Electronic Planners


Pinout




Specifications

IN, SHDN , POK to GND...............................................-7V to +7V
SHDN to IN.............................................................-7V to +0.3V
OUT to GND ...............................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration ....................................Indefinite
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C)..........571mW
Operating Temperature Range .....................-40°C to +85°C
Junction Temperature..................................................+150°C
JA............................................................................140°C/W
Storage Temperature Range ......................-65°C to +150°C
Lead Temperature (soldering, 10s) ............................+300°C


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. MAX8885 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 cur -rent, short-circuit protection, thermal shutdown protection, and reverse-battery protection. The MAX8885 is available in a miniature 5-pin SOT23 package.