ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 1 d escription the ace605 series are high performance linear voltage regulators that provide ultra low - dropout voltage, high output current in lowest output voltage. it operates from an input of 1.4v to 5.5v and provides output current up to 2a thus is suita ble to drive digital circuits requiring low voltage at high currents. the ace605 has superior regulation over variations in line and load. also it provides fast respond to step changes in load. other features include over - current and overtemperature protec tion. the adjustable version has enable pin to reduce power consumption in shutdown mode. the devices are available adj output , and via exteral r adjust output voltage from 0.6v to vin - 0.3v, 0.6v is the reference voltage. the bm9165 have enable function, that is good for poratble system for main chip on and off. in order to have lower dropout and bigger current output ven should 0.8~1.0v higher than vin, but can work if same. power pad sop8 can output over 2a and 1.6a without the pad. features ? 300mv dropo ut @ 2a (1.2v output) ? <300a low ground pin current ? excellent line and load regulation ? 0.1a quiescent current in shutdown mode ? guaranteed >2a output current ? fixed output voltages: 1.05v, 1.2v, 1.8v, 2.5v ? adjustable output voltage from 0.6v to 4.5v ? over - te mperature/over - current protection application ? card reader and battery - powered equipment ? mother board/graphic card ? lcd - tv , net book , usb net card ? net - book, pin - pin with rt9025, rt9018 packaging type sop - 8
ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 2 des c r i p t i o n function e n chip enable control input. logic enable on logic 3.3v/5v. note that the device will be in the unstable state if the pin is not connected vin supply input gnd common ground vout regulator output adj the output voltage is set by the internal feedback resistors when this pin grounded. if external feedback resistors are applied, the output voltage will be: vout=0.6*(1+r1/r2)volts pin description ace 605 x x x x + h voltage output : i : 1.05v/adj j : 1.2v/adj k : 1.8v/adj l : 2.5/adj package and pins type : 1 : with power pad, pinsout 1 2 : with power pad, pinsout 2 3 : without power pad, pinsout 1 4 : without power pad, pinsout 2 pb - free fm : sop - 8 halogen - free
ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 3 application of ace605 ace6051xfm+ vout=0.6*(1+r1/r2) above is adjustable output and below is the fixed 1.8v voltage output circuit ace6051xfm+ notes: in order to get better dropout and larger output current, keep ven higher +0.8v or more than vin , which also result in better output ripple. 1. in order to have a lower ripple output voltage, pls. add a small capacitor from enable pin to ground 2. pull up enable pin to 3.3v or 5v , the voltage , the better , is highe r than vin. 3. the fixed output voltage version is also adjustable via two external resistors, adjust from 0.6v . 4. if enable voltage is same as vin , the dropout voltage is 1v , if higher than vin + 0.8v , the dropout voltage can be less than 0.3v
ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 4 fun ctional block diagram absolute maximum ratings p arameter s ymbol m ax u nit supply input voltage v in 6 v package thermal resistance (75 /w without power pad) ja 50 /w power dissipation pd@t a =25 if pcb copper area=70mm 2 , sop - 8 with power pad p - max=(125 - 25)/50=2w (1.3w without power pad) lead temperature (soldering, 10sec.) 260 junction temperature 150 storage temperature range - 65~150 esd susceptibility hbm (human bode mode) mm(machine mode) 2kv 200v v
ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 5 re commended work conditions item min max unit supply input voltage 1.3 5.5 v junction temperature range - 40 +125 electrical characteristics (vin=vout+0.7v, cin=cout=10 f (ceramic), t a =25 unless otherwise specified) parameter symbol test conditions min typ max units output voltage accuracy (fixed output voltage) v out i out =10ma - 2 0 +2 % output voltage range (adjustable) v out adj 0.6 4.5 v quiescent current (note 6) i q i out =0ma, enable 250 a standby current i stby v in =5.5v , shutdown 0.1 1 a current limit i lim 2.5 3 3.5 a dropout voltage (note 4) i out =0.5a 100 mv i out =1.0a 180 i out =2.0a 300 line regulation v line v out +0.5v ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 6 note: 1. stresses listed as the above "absolute maximum ratings" may cause permanent damage to the device. these are for stress ratings. 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 extend ed periods may remain possibility to affect device reliability. 2. devices are esd sensitive. handling precaution recommended. 3. the device is not guaranteed to function outside its operating conditions. 4. the dropout voltage is defined as v in - v out , whi ch is measured when v out is v out ( normal) ? 100mv. 5. regulation is measured at constant junction temperature by using a 20ms current pulse. devices are tested for load regulation in the load range from 10ma to 2a. 6. quiescent, or ground current, is the di fference between input and output currents. it is defined by iq = i in C i out under no load condition (i out = 0ma). the total current drawn from the supply is the sum of the load current plus the ground pin current. 7 . tr y to layout the pads larger to get b etter heat - sink , result in larger current output. application of ace6052xfm+ and ace6054xfm+ ace6052xfm+ ace6052xfm+
ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 7 packing information sop - 8
ace 605 ultra low dro pout 2a cmos ldo ver 1. 3 8 notes ace does not assume any responsibility for use as critical components in life support devices or systems without the express written approval of the president and general counsel of ace electronics co., ltd. as sued herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life suppor t device or system, or to affect its safety or effectiveness. ace technology co., ltd. http://www.ace - ele.com/
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