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MAX8862 Dataheets PDF



Part Number MAX8862
Manufacturers Maxim
Logo Maxim
Description Low-Cost / Low-Dropout / Dual Linear Regulator
Datasheet MAX8862 DatasheetMAX8862 Datasheet (PDF)

19-1117; Rev 0; 8/96 Low-Cost, Low-Dropout, Dual Linear Regulator _______________General Description The MAX8862 low-cost, low-dropout, dual linear voltage regulator is ideal for battery-powered and portable applications. The regulators have independent supply inputs and provide 250mA and 100mA, respectively, with a full-load dropout voltage of 160mV. Both regulators use P-channel MOSFET pass transistors and maintain low quiescent current independent of load current. In dropout, the MOSFET does.

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19-1117; Rev 0; 8/96 Low-Cost, Low-Dropout, Dual Linear Regulator _______________General Description The MAX8862 low-cost, low-dropout, dual linear voltage regulator is ideal for battery-powered and portable applications. The regulators have independent supply inputs and provide 250mA and 100mA, respectively, with a full-load dropout voltage of 160mV. Both regulators 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 (µC) 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. ____________________________Features o Low Cost o Guaranteed 250mA and 100mA Output Currents, with Current Limiting o Dual Mode Operation: Fixed or Adjustable Output from +2V to +11V o +2.5V to +11.5V Input Range o 160mV Dropout Voltage at 200mA Output Current o Low Supply Current—Even in Dropout 200µA Operating <1µA Shutdown o Power-Good Indicator o Reverse-Battery Protection o Thermal Overload Protection MAX8862 ______________Ordering Information PART* MAX8862_ESE TEMP. RANGE -40°C to +85°C PIN-PACKAGE 16 Narrow SO *Insert the desired suffix letter (from the table below) into the blank to complete the part number. SUFFIX L T R FIXED OUTPUT VOLTAGE (V) 4.95 3.175 2.85 ________________________Applications Cellular Phones PCS Phones Modems Electronic Planners Cordless Phones PCMCIA Cards Hand-Held Instruments __________________Pin Configuration TOP VIEW __________Typical Operating Circuit INPUT 1 2.5V TO 11.5V 1µF OUTPUT 1 AT 250mA 3.3µF 100k PWROK1 REF2 0.1µF IN1 SHDN1 IN2 SHDN2 1µF OUTPUT 2 AT 100mA 2.2µF INPUT 2 2.5V TO 11.5V IN1 1 SHDN1 2 PWROK1 3 16 N.C. 15 SET1 14 OUT1 MAX8862 OUT1 OUT2 GND 4 GND 5 OUT2 6 SET2 7 N.C. 8 MAX8862 13 GND 12 GND 11 REF2 10 SHDN2 9 IN2 GND SET1 SET2 GND Narrow SO Dual Mode is a trademark of Maxim Integrated Products. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 Low-Cost, Low-Dropout, Dual Linear Regulator MAX8862 ABSOLUTE MAXIMUM RATINGS 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 20kΩ resistors to limit current flow in case a battery is reversed. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (Notes 2, 3) (VIN_ = VOUT_(TYP) + 1V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER Input Voltage Range Output Voltage Output Voltage Range Maximum Output Current Current Limit Quiescent Current Shutdown Supply Current VIN1 = VIN2 = 11.5V IOUT1 = IOUT2 = 1mA IOUT1 = 200mA, MAX8862L/T Dropout Voltage (Note 4) IOUT2 = 100mA, MAX8862L/T IOUT1 = 200mA, MAX8862R IOUT2 = 100mA, MAX8862R IOUT1 = IOUT2 = 15mA Line Regulation VIN2 = (VOUT2 (TYP) + 1V) to 11.5V Load Regulation IOUT1 = 0mA to 250mA, COUT1 = 3.3µF IOUT2 = 0mA to 100mA, COUT2 = 2.2µF COUT2 = 2.2µF ZOUT2 = 10mA COUT2 = 100µF ZOUT2 = 10mA CREF2 = 0.1µF VIN2 = 2.5V to 11.5V IREF2 = 0µA to 10µA 10Hz < f < 100kHz 10Hz < f < 1MHz 10Hz < f < 100kHz 10Hz < f < 1MHz 1.230 0.02 0.015 0.02 277 875 211 667 1.250 1 6 1.270 V mV mV 0.08 %/mA .


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