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MAX8865T Dataheets PDF



Part Number MAX8865T
Manufacturers Maxim
Logo Maxim
Description 100mA Linear Regulators
Datasheet MAX8865T DatasheetMAX8865T Datasheet (PDF)

19-0485; Rev 0; 4/96 Dual, Low-Dropout, 100mA Linear Regulators _______________General Description The MAX8865 and MAX8866 dual, low-dropout linear regulators operate from a +2.5V to +5.5V input range and deliver up to 100mA. At 200mA total load, the PMOS pass transistors keep the supply current at 145µA, making these devices ideal for battery-operated portable equipment such as cellular phones, cordless phones, and modems. The devices feature Dual Mode™ operation: their output voltages are pre.

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19-0485; Rev 0; 4/96 Dual, Low-Dropout, 100mA Linear Regulators _______________General Description The MAX8865 and MAX8866 dual, low-dropout linear regulators operate from a +2.5V to +5.5V input range and deliver up to 100mA. At 200mA total load, the PMOS pass transistors keep the supply current at 145µA, making these devices ideal for battery-operated portable equipment such as cellular phones, cordless phones, and modems. The devices feature Dual Mode™ operation: their output voltages are preset (at 3.15V for the “T” versions, 2.84V for the “S” versions, or 2.80V for the “R” versions) or can be adjusted with external resistor dividers. Other features include independent low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8866 also includes an auto-discharge function, which actively discharges the selected output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 8-pin µMAX package. ____________________________Features o Low Cost o Low, 55mV Dropout Voltage @ 50mA IOUT o Low, 105µA No-Load Supply Current o Low, 145µA Operating Supply Current (even in dropout) o Low, 350µVRMS Output Noise o Independent, Low-Current Shutdown Control o Thermal Overload Protection o Output Current Limit o Reverse Battery Protection o Dual Mode Operation: Fixed or Adjustable (1.25V to 5.5V) Outputs MAX8865T/S/R, MAX8866T/S/R ______________Ordering Information ________________________Applications Cordless Telephones PCS Telephones Cellular Telephones PCMCIA Cards Modems Hand-Held Instruments Palmtop Computers Electronic Planners PART MAX8865TEUA MAX8865SEUA MAX8865REUA MAX8866TEUA MAX8866SEUA MAX8866REUA TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 8 µMAX 8 µMAX 8 µMAX 8 µMAX 8 µMAX 8 µMAX PRESET VOUT (V) 3.15 2.84 2.80 3.15 2.84 2.80 __________Typical Operating Circuit __________________Pin Configuration TOP VIEW OUT1 IN OUT2 OUTPUT VOLTAGE 1 OUTPUT VOLTAGE 2 COUT1 1µF COUT2 1µF CIN 2µF BATTERY MAX8865 MAX8866 SHDN1 SHDN2 GND SET1 SET2 OUT1 1 IN 2 GND 3 OUT2 4 8 SET1 SHDN1 SHDN2 SET2 MAX8865 MAX8866 µMAX 7 6 5 SHDN2 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 Dual, Low-Dropout, 100mA Linear Regulators MAX8865T/S/R, MAX8866T/S/R ABSOLUTE MAXIMUM RATINGS VIN to GND ..................................................................-6V to +6V Output Short-Circuit Duration ............................................Infinite SET_ to GND ............................................................-0.3V to +6V SHDN_ _ to GND ............................................................-6V to +6V SHDN_ _ to IN .............................................................-6V to +0.3V OUT_ to GND...............................................-0.3V to (VIN + 0.3V) Continuous Power Dissipation (TA = +70°C) µMAX (derate 4.1mW/°C above +70°C)......................330mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Thermal Resistance (θJA)...............................................244°C/W Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C 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 (VIN = +3.6V, GND = 0V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER Input Voltage (Note 1) Output Voltage Adjustable Output Voltage Range (Note 2) Maximum Output Current Current Limit (Note 3) Ground Pin Current Dropout Voltage (Note 4) Line Regulation Load Regulation Output Voltage Noise SHUTDOWN SHDN Input Threshold SHDN Input Bias Current Shutdown Supply Current Shutdown to Output Discharge Delay (MAX8866) SET INPUT SET Reference Voltage (Note 2) SET Input Leakage Current (Note 2) THERMAL PROTECTION Thermal Shutdown Temperature Thermal Shutdown Hysteresis 2 VSET_ ISET_ VIH VIL I SHDN_ _ IQ SHDN V SHDN_ _ = VIN VOUT_ = 0V COUT = 1µF, no load 0 0.16 1 2.0 0.4 1000 3000 V nA nA ms ∆VLNR ∆VLDR SYMBOL VIN VOUT_ 0mA ≤ IOUT ≤ 50mA, SET_ = GND MAX886_T MAX886_S MAX886_R CONDITIONS MIN 2.5 3.08 2.77 2.73 VSET_ 100 ILIM IQ SET_ = GND IOUT = 1mA IOUT = 50mA VIN = 2.5V to 5.5V, SET_ tied to OUT_, IOUT_ = 1mA IOUT_ = 0mA to 50mA 10Hz to 1MHz SET_ = GND SET_ tied to OUT_ COUT = 1µF .


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