MAX4788EXS+TG069

MAX4788EXS+TG069 Features

♦ Guaranteed Current Limit: 50mA, 100mA♦ Thermal-Shutdown Protection♦ Reverse-Current Protection♦ 0.7Ω On-Resistance♦ 14ms Guaranteed Blanking Time♦ FLAG Function (MAX4785/MAX4787)♦ 65µA Supply Current♦ 8µA Latch-Off Current (MAX4785/MAX4787)♦ 0.01µA Shutdown Current♦ 2.3V to 5.5V Supply Range♦ Undervoltage Lockout♦ Fast Current-Limit Response Time♦ Tiny SC70 Package

MAX4788EXS+TG069 General Description

The MAX4785–MAX4788 family of switches feature inter-nal current limiting to prevent host devices from beingdamaged due to faulty load conditions. These analogswitches have a low 0.7Ω on-resistance and operatefrom a 2.3V to 5.5V input voltage range. They are avail-able with guaranteed 50mA and 100mA current limits,making them ideal for load-switching applications.When the switch is on and a load is connected to theport, a guaranteed blanking time of 14ms ensures thatthe transient voltages settle down. If after this blankingtime the load current is greater than the current limit,the MAX4785 and MAX4787 enter a latch-off statewhere the switch is turned off and FLAG is issued to themicroprocessor. The switch can be turned on again bycycling the power or the ON pin.The MAX4786 and MAX4788 have an autoretry featurewhere the switch turns off after the blanking time andthen continuously checks to see if the overload condi-tion is present. The switch remains on after the overloadcondition disappears.The MAX4785 and MAX4787 are available in a tinyspace-saving 4-pin or 5-pin SC70 package. TheMAX4786 and MAX4788 are available only in the 4-pinSC70 package. For higher current current-limitingswitches, refer to the MAX4789–MAX4794 andMAX1693 data sheets.

MAX4788EXS+TG069 Applications

PDAs and Palmtop DevicesCell PhonesGPS SystemsHand-Held Devices