AMC7136 general description the AMC7136 is a constant current regulator for driving leds with low quiescent current and low dropout voltage. the current is adjustable from 10ma to 400ma with an external resistor. only one external resistor is required to achieve a constant current led driver. soft start, thermal protection and low voltage protection are also provided. a driver pin dr is provided for current and voltage extension. adding an external nmos or npn transistor to this pin can extend current and voltage range. ordering information AMC7136 features y sink current: 10ma to 400ma adjustable with an external resistor y current and voltage range extendable by adding an external nmos or npn transistor y power supply voltage: 2.7-6v y low drop out voltage: 100mv@350ma y low quiescent current: 250ua y thermal protection y soft start y low voltage protection: 2.5v y sot-89-5 package applications y power led driver block diagram 50mv gnd AMC7136 vdd bandgap thermal protection low voltage protection soft start led cs dr en adjustable constant current led driver AMC7136 free datasheet http://www..net/
AMC7136 pin configurations led drv vdd gnd cs amc 7136 (sot-89-5) 12 3 4 5 typical application gnd AMC7136 vdd 2.7-6v led cs rext low voltage application gnd amc 7136 vdd 2.7-6v dr cs zener diode high voltage rext high voltage application free datasheet http://www..net/
AMC7136 absolute maximum ratings type symbol description value unit v max maximum voltage on vdd, led, en, dr and cs pins 8 v voltage v min-max voltage range on led pin -0.3~vdd+0.3 v current iled max maximum current on led pin 500 ma power dissipation p sot-89-5 maximum power dissipation for sot-89-3 package 0.5 w t min-max operation temperature range -20~85 o c thermal t storage storage temperature range -40~165 o c esd vesd esd voltage for human body model 2000 v electronic characteristics parameter symbol test condition min typ max unit sink current range vdd=3.6 10 400 ma vdd range iled=350ma 2.7 6.0 v cs voltage v cs 47 50 53 mv sink current accuracy iled/iled amc 5201x350 -5 5 % load regulation vled=0.2v to 3v vdd=3.6v 2 ma/v line regulation vdd=3v to 5.5v 2 ma/v output dropout voltage v do 100 mv supply current i dd 250 ua low voltage protection 2.3 2.5 2.7 v free datasheet http://www..net/
AMC7136 package information free datasheet http://www..net/
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