MAX8865T/S/R, MAX8866T/S/R 19-0485 Rev 0 4/96 Dual, Low-Dropout, 100mA Linear Regulators General Description Features The MAX8865 and MAX8866 dual, low-dropout linear Low Cost regulators operate from a +2.5V to +5.5V input range Low, 55mV Dropout Voltage 50mA I OUT and deliver up to 100mA. At 200mA total load, the PMOS pass transistors keep the supply current at Low, 105A No-Load Supply Current 145A, making these devices ideal for battery-operated Low, 145A Operating Supply Current (even in portable equipment such as cellular phones, cordless phones, and modems. dropout) The devices feature Dual Mode operation: their out- Low, 350V Output Noise RMS put voltages are preset (at 3.15V for the T versions, Independent, Low-Current Shutdown Control 2.84V for the S versions, or 2.80V for the R versions) or can be adjusted with external resistor dividers. Other Thermal Overload Protection features include independent low-power shutdown, Output Current Limit short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8866 also Reverse Battery Protection includes an auto-discharge function, which actively dis- Dual Mode Operation: Fixed or Adjustable (1.25V charges the selected output voltage to ground when to 5.5V) Outputs the device is placed in shutdown mode. Both devices come in a miniature 8-pin MAX package. Ordering Information Applications PIN- PRESET PART TEMP. RANGE PACKAGE V (V) OUT Cordless Telephones Modems MAX8865TEUA -40C to +85C 8 MAX 3.15 MAX8865SEUA -40C to +85C 8 MAX 2.84 PCS Telephones Hand-Held Instruments MAX8865REUA -40C to +85C 8 MAX 2.80 Cellular Telephones Palmtop Computers MAX8866TEUA -40C to +85C 8 MAX 3.15 MAX8866SEUA -40C to +85C 8 MAX 2.84 PCMCIA Cards Electronic Planners MAX8866REUA -40C to +85C 8 MAX 2.80 Typical Operating Circuit Pin Configuration TOP VIEW OUTPUT VOLTAGE 1 OUT1 OUT2 OUTPUT IN VOLTAGE 2 OUT1 1 8 SET1 MAX8865 C OUT1 C 2 7 SHDN1 C MAX8866 IN OUT2 IN 1F MAX8865 1F 2F SHDN1 GND 3 6 SHDN2 MAX8866 BATTERY SHDN2 OUT2 4 5 SET2 GND SET1 SET2 MAX SHDN2 Dual Mode is a trademark of Maxim Integrated Products. Maxim Integrated Products 1 For free samples & the latest literature: Dual, Low-Dropout, 100mA Linear Regulators ABSOLUTE MAXIMUM RATINGS V to GND ..................................................................-6V to +6V Operating Temperature Range ...........................-40C to +85C IN Output Short-Circuit Duration ............................................Infinite Junction Temperature......................................................+150C SET to GND ............................................................-0.3V to +6V Thermal Resistance ( )...............................................244C/W JA SHDN to GND............................................................-6V to +6V Storage Temperature Range .............................-65C to +160C SHDN to IN .............................................................-6V to +0.3V Lead Temperature (soldering, 10sec) .............................+300C OUT to GND...............................................-0.3V to (V + 0.3V) IN Continuous Power Dissipation (T = +70C) A MAX (derate 4.1mW/C above +70C)......................330mW 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 (V = +3.6V, GND = 0V, T = 0C to +85C, unless otherwise noted. Typical values are at T = +25C.) IN A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage (Note 1) V 2.5 5.5 V IN MAX886 T 3.08 3.15 3.24 0mA I 50mA, OUT Output Voltage V MAX886 S 2.77 2.84 2.91 V OUT SET = GND MAX886 R 2.73 2.80 2.87 Adjustable Output Voltage V V 5.5 V OUT SET Range (Note 2) Maximum Output Current 100 mA Current Limit (Note 3) I 220 mA LIM I = 0mA 105 270 OUT Ground Pin Current I SET = GND A Q I = 50mA 145 OUT I = 1mA 1.1 OUT Dropout Voltage (Note 4) mV I = 50mA 55 120 OUT V = 2.5V to 5.5V, SET tied to OUT , IN Line Regulation V -0.10 0 0.10 %/V LNR I = 1mA OUT SET = GND 0.012 0.03 Load Regulation V I = 0mA to 50mA %/mA LDR OUT SET tied to OUT 0.006 C = 1F 350 OUT Output Voltage Noise 10Hz to 1MHz V RMS C = 100F 220 OUT SHUTDOWN V 2.0 IH SHDN Input Threshold V V 0.4 IL I V = V 0 1000 nA SHDN Input Bias Current IN SHDN SHDN Shutdown Supply Current I V = 0V 0.16 3000 nA Q SHDN OUT Shutdown to Output C = 1F, no load 1 ms OUT Discharge Delay (MAX8866) SET INPUT SET Reference Voltage (Note 2) V V = 2.5V to 5.5V, I = 1mA 1.222 1.25 1.276 V SET IN OUT SET Input Leakage Current I V = 1.3V 0.015 50 nA SET SET (Note 2) THERMAL PROTECTION Thermal Shutdown Temperature T 170 C SHDN Thermal Shutdown Hysteresis T 20 C SHDN 2 MAX8865T/S/R, MAX8866T/S/R