Click here for production status of specific part numbers. MAX1818 500mA Low-Dropout Linear Regulator in SOT23 General Description Features The MAX1818 low-dropout linear regulator operates Guaranteed 500mA Output Current from a +2.5V to +5.5V supply and delivers a guaranteed Low 120mV Dropout at 500mA 500mA load current with low 120mV dropout. The high- 1% Output Voltage Accuracy accuracy (1%) output voltage is preset at an internally Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V trimmed voltage (see Selector Guide) or can be adjusted Adjustable from 1.25V to 5.0V from 1.25V to 5.0V with an external resistive divider. Power OK Output An internal PMOS pass transistor allows the low 125A Low 125A Ground Current supply current to remain independent of load, making this device ideal for portable battery-operated equipment such 0.1A Shutdown Current as personal digital assistants (PDAs), cellular phones, Thermal Overload Protection cordless phones, base stations, and notebook computers. Output Current Limit Other features include an active-low open-drain reset Tiny 800mW 6-Pin SOT23 Package output that indicates when the output is out of regulation, a 0.1A shutdown, short-circuit protection, and thermal shutdown protection. The device is available in a minia- ture 800mW 6-pin SOT23 package. Ordering Information PART* TEMP RANGE PIN-PACKAGE Applications MAX1818EUT +T -40C to +85C 6 SOT23-6 Notebook Computers Cellular and Cordless Telephones *Insert the desired two-digit suffix (see Selector Guide) into the blanks to complete the part number. Personal Digital Assistants (PDAs) Palmtop Computers Note: The MAX1818 requires a special solder temperature profile described in the Absolute Maximum Ratings section. Base Stations USB Hubs T = Tape and reel. Denotes an RoHS-compliant package. Docking Stations Selector Guide appears at end of data sheet. Pin Configuration Typical Operating Circuit VV = = 22..55VV TO 5. TO 5.55VV IN IN VV TOP VIEWTOP VIEW ININ OUTOUT OUTOUT NCNC CC CC OUTOUT ININ 3.3F3.3F 1F1F ININ 11 66 OUTOUT MAX1818MAX1818 MAX1818MAX1818 RR POKPOK POKPOK 22 55 SETSET 100k100k ONON TO TO SHDNSHDN POKPOK CC OFFOFF SHDNSHDN 33 44 GNDGND SETSET GNDGND SOT23SOT23 19-1860 Rev 3 8/18MAX1818 500mA Low-Dropout Linear Regulator in SOT23 Absolute Maximum Ratings IN, SHDN, POK, SET to GND .................................-0.3V to +6V Operating Temperature Range ........................... -40C to +85C OUT to GND ...............................................-0.3V to (V + 0.3V) Junction Temperature ......................................................+150C IN Output Short-Circuit Duration .............................................. 1min Storage Temperature Range ............................ -65C to +150C Continuous Power Dissipation (T = +70C) (Note 1) Lead Temperature (soldering, 10s) (Note 2) ...................+300C A 6-Pin SOT23 (derate 10mW/C above +70C) ...........800mW Note 1: Thermal properties are specified with product mounted on PC board with one square-inch of copper area and still air. With minimal copper, the SOT23 package dissipates 712mW at +70C. With a quarter square inch of copper, it will dissipate 790mW at +70C. Copper should be equally shared between the IN, OUT, and GND pins. Note 2: This device is constructed using a unique set of packaging techniques that imposes a limit on the thermal profile to which the device can be exposed during board-level solder attach and rework. The limit permits only the use of the solder profiles recom- mended in the industry standard specification, IPC JEDEC-J-STD-020A, paragraph 7.6, Table 3 for the IR/VPR and convection reflow. Preheating is required. Hand or wave soldering is not allowed. 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 = V + 500mV or V = +2.5V, whichever is greater SHDN = IN, T = -40C to +85C, unless otherwise noted. Typical values IN OUT IN A are at T = +25C.) (Note 3) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage V 2.5 5.5 V IN Input Undervoltage Lock-Out V Rising, 75mV hysteresis 2.0 2.15 2.3 V UVLO I = 100mA, T = +25C, V 2.0V -1 +1 OUT A OUT I = 100mA, V < 2.0V -1.5 +1.5 OUT OUT Output Voltage Accuracy V I = 100mA, T = -40C to +85C -2.5 +2.5 % OUT OUT A (Preset Mode) I = 1mA to 500mA, V > V + 0.5V, OUT IN OUT -3 +3 T = -40C to +85C A Adjustable Output Voltage 1.25 5 V Range V = 2.7V, T = 0C to +85C 1.225 1.250 1.275 IN A SET Voltage Threshold V I = 100mA, V SET OUT (Adjustable Mode) V set to 2.0V T = -40C to +85C 1.213 1.288 OUT A Guaranteed Output Current I V 2.7V 500 mA OUT IN (RMS) Short-Circuit Current Limit I V = 0, V 2.7V 0.55 0.8 1.8 A LIM OUT IN In-Regulation Current Limit V > 96% of nominal value, V 2.7V 1.6 A OUT IN SET Dual Mode Threshold 50 100 150 mV SET Input Bias Current I V = 1.25V -100 +100 nA SET SET I = 100A 125 250 OUT Ground-Pin Current I A Q I = 500mA 140 OUT V = 5V 100 220 OUT Dropout Voltage (Note 4) V - V I = 500mA V = 3.3V 120 215 mV IN OUT OUT OUT V = 2.5V 210 360 OUT V from (V + 100mV) to 5.5V, IN OUT Line Regulation V -0.15 0 +0.15 %/V LNR I = 5mA LOAD Dual Mode is a trademark of Maxim Integrated Products Maxim Integrated 2 www.maximintegrated.com