MAX8862

Low Cost
Guaranteed 250mA and 100mA Output Currents, with Current Limiting
Dual Mode Operation: Fixed or Adjustable Output from +2V to +11V
+2.5V to +11.5V Input Range
160mV Dropout Voltage at 200mA Output Current
Low Supply Current-Even in Dropout 200A Operating <1A Shutdown
Power-Good Indicator
Reverse-Battery Protection
Thermal Overload Protection

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

IN1, IN2 to GND (Note 1)...............................................................................±12V
SET1, SHDN1, PWROK1 to GND............................................ -0.3V to (VIN1 + 0.3V)
SET2, SHDN2, REF2 to GND .................................................... -0.3V, (VIN2 + 0.3V)
Output Short-Circuit Duration ......................................................................Infinite
Continuous Power Dissipation (TA = +70°C)
16-Pin Narrow SO (derate 20mW/°C above +70°C)....................................... 1W
Operating Temperature Range ....................................................-40°C to +85°C
Junction Temperature ................................................................................+150°C
Storage Temperature Range ......................................................-65°C to +150°C
Lead Temperature (soldering, 10sec) ........................................................ +300°C

Note 1: Connect SHDN1 to IN1 and SHDN2 to IN2 through 20k½ resistors to limit current flow in case a battery is reversed.

The MAX8862 low-cost, low-dropout, dual linear voltage regulator is ideal for battery-powered and portable applications. The regulators MAX8862 have independent supply inputs and provide 250mA and 100mA, respectively, with a full-load dropout voltage of 160mV. Both regulators MAX8862 use P-channel MOSFET pass transistors and maintain low quiescent current independent of load current.
In dropout, the MOSFET does not suffer from excessive base currents, as do saturated PNP transistors.

The MAX8862 output voltage is preset to 4.95V (L), 3.175V (T), or 2.85V (R). This device employs Dual Mode™ operation, allowing user-adjustable outputs from +2V to +11V with external resistors. The input supply-voltage range is 2.5V to 11.5V. Other features include independent shutdown, power-good indicator, short-circuit and reverse-battery protection, and thermal shutdown.

The MAX8862's regulators are ideal power supplies for the radio and the microcontroller (C) used in digital, cordless, and PCS phones. The main regulator is optimized for superior transient and dynamic response, while the secondary regulator exhibits low-output, wideband noise.

The MAX8862 comes in a 16-pin SO package with a lead frame that uses multiple GND pins as a heat sink for additional thermal dissipation.