MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low I , 500mA Linear Regulators Q General Description Features The MAX603/MAX604 low-dropout, low quiescent current, 500mA Output Current, with Foldback Current linear regulators supply 5V, 3.3V, or an adjustable output Limiting for currents up to 500mA. They are available in a 1.8W SO High-Power (1.8W) 8-Pin SO Package package. Typical dropouts are 320mV at 5V and 500mA, Dual Mode Operation: Fixed or Adjustable Output or 240mV at 3.3V and 200mA. Quiescent currents are from 1.25V to 11V 15A typ and 35A max. Shutdown turns off all circuitry and puts the regulator in a 2A off mode. A unique protection Large Input Range (2.7V to 11.5V) scheme limits reverse currents when the input voltage falls Internal 500mA P-Channel Pass Transistor below the output. Other features include foldback current 15A Typical Quiescent Current limiting and thermal overload protection. 2A (Max) Shutdown Mode The output is preset at 3.3V for the MAX604 and 5V Thermal Overload Protection for the MAX603. In addition, both devices employ Dual Mode operation, allowing user-adjustable outputs from Reverse-Current Protection 1.25V to 11V using external resistors. The input voltage supply range is 2.7V to 11.5V. Applications The MAX603/MAX604 feature a 500mA P-channel 5V and 3.3V Regulators MOSFET pass transistor. This transistor allows the devices 1.25V to 11V Adjustable Regulators to draw less than 35A over temperature, independent Battery-Powered Devices of the output current. The supply current remains low Pagers and Cellular Phones because the P-channel MOSFET pass transistor draws Portable Instruments no base currents (unlike the PNP transistors of conventional Solar-Powered Instruments bipolar linear regulators). Also, when the input-to-output voltage differential becomes small, the internal P-channel MOSFET does not suffer from excessive base current Ordering Information appears at end of data sheet. losses that occur with saturated PNP transistors. Typical Operating Circuit Pin Configuration TOP VIEW OUTPUT IN OUT VOLTAGE MAX603 IN OUT MAX604 1 8 MAX603 GND GND 2 7 OFF C OUT C BATTERY IN MAX604 10F 10F GND GND 3 6 GND SET OFF SET 4 5 DIP/SO Dual Mode is a trademark of Maxim Integrated Products. 19-0269 Rev 1 4/17MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low I , 500mA Linear Regulators Q Absolute Maximum Ratings Supply Voltage (IN or OUT to GND) .....................-0.3V to +12V Operating Temperature Ranges Output Short-Circuit Duration ............................................. 1 min MAX60 C A .......................................................0C to +70C Continuous Output Current ..............................................600mA MAX60 E A ................................................... -40C to +85C SET, OFF Input Voltages .......................... -0.3V to the greater of MAX60 MJA ................................................. -55C to +125C (IN + 0.3V) or (OUT + 0.3V) Junction Temperature ......................................................+150C Continuous Power Dissipation (T = +70C) Storage Temperature Range ............................ -65C to +160C A Plastic DIP (derate 9.09mW/C above +70C) ............727mW Lead Temperature (soldering, 10sec) .............................+300C SO (derate 23.6mW/C above +70C) ............................1.8W CERDIP (derate 8.00mW/C above +70C) ................640mW 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 = 6V (MAX603) or 4.3V (MAX604), C = C = 10F, OFF = V , SET = GND, T = T to T , unless otherwise noted. IN IN OUT IN J MIN MAX Typical values are at T = +25C.) (Note 1) J PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX60 C 2.7 11.5 Input Voltage V SET = OUT, R = 1k MAX60 E 2.9 11.5 V IN L MAX60 M 3.0 11.5 I = 20A to 500mA, OUT MAX603 4.75 5.00 5.25 6.0V < V < 11.5V IN Output Voltage (Note 2) V V OUT I = 20A to 300mA, OUT MAX604 3.15 3.30 3.45 4.3V < V < 11.5V IN MAX603C/E 60 100 I = 1mA to 500mA OUT Load Regulation V MAX603M 150 mV LDR I = 1mA to 300mA MAX604 30 100 OUT Line Regulation V (V + 0.5V) V 11.5V, I = 25mA 7 40 mV LNR OUT IN OUT I = 200mA 130 220 OUT MAX603 I = 500mA 320 550 OUT Dropout Voltage (Note 3) V mV DO I = 200mA 240 410 OUT MAX604 I = 400mA 480 820 OUT MAX60 C/E 15 35 Quiescent Current I 3.0V V 11.5V, SET = OUT A Q IN MAX60 M 40 MAX60 C 0.01 2 OFF 0.4V, R = 1k, L OFF Quiescent Current I MAX60 E 10 A Q OFF (V + 1V) V 11.5V OUT IN MAX60 M 20 MAX60 C 2 Minimum Load Current I V = 11.5V, SET = OUT MAX60 E 6 A OUT MIN IN MAX60 M 20 V < 0.8V 350 Foldback Current Limit OUT I mA LIM (Note 4) V > 0.8V and V - V > 0.7V 1200 OUT IN OUT Thermal Shutdown Temperature T 160 C SD Thermal Shutdown Hysteresis T 10 C SD Maxim Integrated 2 www.maximintegrated.com