APU8836 1 data and specifications subject to change without notice. description the APU8836 device is an efficient linear voltage regula- tor with better than 2% initial voltage accuracy, very low dropout voltage and very low ground current designed especially for hand held, battery powered applications. other features of the device are: ttl compatible enable/ shutdown control input, current limiting and thermal shut- down. the APU8836 is available in adjustable output voltage versions in a small sot-23 5-pin package. 300ma ultra low dropout positive adjustable and fixed regulators sot-23-5 package stable with 2.2 m f ceramic capacitor 2% voltage reference accuracy only 320mv dropout at 300ma and 170mv dropout at 150ma 5 m a quiescent current in shutdown current limit and thermal shutdown logic input enable pin halogen free & rohs compliant product typical application figure 1 - typical application of the APU8836 ajustable voltage regulator. applications laptop, notebook & palmtop computers battery powered equipments pcmcia vcc & vpp regulator consumer electronics high efficiency linear power supplies features package order information v in v o r1 r2 c1 2.2uf c2 2.2uf sd enable v out adj vin gnd en vo = 0.8 3 1+ r1 r2 ( ) adva nced power electronics corp. 201206215 APU8836x-hf y5 : sot-23-5l package y5r : sot-23-5l halogen free
2 APU8836 absolute maximum ratings input voltage (v in ) ..................................................... 10v enable input voltage ................................................. 10v storage temperature range ....................................... -65c to 150c operating junction temperature range ...................... 0c to 150c package information electrical specifications reference voltage line regulation load regulation (note 1) dropout voltage (note 2) ground current (note 3) ground current-sd activated current limit thermal regulation adjust pin current enable pin input lo voltage enable pin input hi voltage enable pin input lo current enable pin input hi current unless otherwise specified, these specifications apply over cin=co=2.2mf, io=100ma, vin(min)=2.5v(adjustable devices), vout=vfb(for adjustable version only), ven=2v and ta=25 o c. typical values refer to ta=25 o c. low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. parameter sym test condition min typ max units vo + 1vAPU8836y5 sot-23-5l en gnd vin vout adj top view rthja=256 /w APU8836y5r sot-23-5l junction temperature range ...................... 0 o c to 125 o c
APU8836 3 pin symbol pin description the input pin of the regulator. typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum drop out voltage during the load transient response. this pin must always be higher than vout by at least the amount of the dropout voltage and some margin in order for the device to regulate properly. ground pin. this pin must be connected to the lowest potential in the system and all other pins must be at higher potential with respect to this pin. enable pin. a low signal or left open on this pin shuts down the output. this pin must be tied hi or to vin for normal operation. a resistor divider from this pin to the vout pin and ground sets the output voltage. to minimize the error due to the error amplifier, select the values of the resistor dividers to be less than 10k v. the output of the regulator. a minimum of 2.2 mf with max esr of 1v capacitor must be connected from this pin to ground to insure stability. note 3: ground current is the regulator quiescent cur- rent plus the pass transistor current. the total current from the supply is the sum of the load current plus the ground pin current. note 1: low duty cycle pulse testing with kelvin con- nections is required in order to maintain accurate data. note 2: dropout voltage is defined as the minimum dif- ferential voltage between v in and v out required to main- tain regulation at v out . it is measured when the output voltage drops below its nominal value. pin descriptions v in gnd en adj (adjustable only) v out adva nced power electronics corp.
4 APU8836 block diagram figure 2 - APU8836 adjustable output block diagram. v in en thermal shutdown 0.8v v out adj gnd + a d v a n ced p o w e r electro n i cs c o rp . current limit
advanced power electronics corp. APU8836 typical performance characteristics vin=ven=3.5v, r1/r2=2k ? /1k ? , cin=cout=2.2uf(el cap.) vin=ven=3.5v, r1/r2=2k ? /1k ? , cin=cout=2.2uf(el cap.) power on (r l =8 ? ) power off (r l =8 ? ) power on (r l =16 ? ) power off (r l =16 ? ) power sequence 5 i out =0ma ~ 150ma vin=3.5v, r1/r2=2k ? /1k ? , cin=cout=2.2uf(el cap.) vin=3.5v, r1/r2=2k ? /1k ? , cin=cout=2.2uf(el cap.) ton=toff=1ms, rising=falling=0.25a/us current limit (v out vs. i out ) load transient power sequence v out i out v out i out v in v en v out i out v in v en v out i out v in v en v out i out v in v en v out i out
advanced power electronics corp. APU8836 typical performance characteristics vin=3.5v, r1/r2=2k ? /1k ? , cin=cout=2.2uf(el cap.) ven=0v to 2v ven=2v to 0v vin=3.5v, r1/r2=2k /1k , cin=cout=2.2uf(el cap.) ven=0v to 2v ven=2v to 0v 6 enable on sequence (r l =16 ? ) enable off sequence (r l =16 ? ) enable on sequence (r l =8 ? ) enable off sequence (r l =8 ? ) v in v en v out i out v in v en v out i out v in v en v out i out v in v en v out i out
advanced power electronics corp. APU8836 marking information sot-23-5l 7 xxss part number : rs : APU8836y5 rs : APU8836y5r date code : ss
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