www.acutechnology.com AQ102 AQ102 low-voltage ref/amplifier sot23-5 and sc70-5 package product specification revision 1.3 may 3, 2005 applications ? power supply control loop ? power supply supervisory functions general description the AQ102 is a low voltage combined reference/amplifier suited for the control loop of low voltage power supplies. in order to allow operation down to very low voltages, the error amplifier output and the supply terminal have been isolated to separate functional pins. the nominal reference voltage is 600 mv, the comp output can sink 20ma at 300mv. functionally, the aq120 can be applied similarly to industry standard tl431, except that the reference is 600 mv and this requires a separate vcc connection to a supply above 2.2v. additionally, the output of the aq120 can swing close to ground. in the sc-70 package, the AQ102 is a replacement for the max8515 part. features ? low input voltage reference ? 600mv high accuracy voltage reference ? low tc voltage reference ? high psrr and line regulation ? low current consumption ? offered in ultra small sc70-5 package ? zero offset error amplifier ? open collector output ? rohs compliant block diagram pin configuration
acutechnology semiconductor inc. AQ102 www.acutechnology.com 2 rev. 1.3 may 3, 2005 typical application pin descriptions pin pin name function 1 fb inverting input to error amplifier; will have threshold of 600mv. 2 gnd ground 3 comp output of error amplifier; 20 ma source/sink capability 4 n/c - 5 vcc positive supply ordering information device operating tj %tol pkg type v out wrap ordering number AQ102 -40c ? 105c ? 1.0 sot-23-5 0.6v t&r AQ102by-m5-06-trl AQ102 -40c ? 105c ? 1.0 sc70-5 0.6v t&r AQ102by-c5-06-trl note: the trl parts are lead free and rohs compliant.
acutechnology semiconductor inc. AQ102 www.acutechnology.com 3 rev. 1.3 may 3, 2005 absolute maximum ratings parameter value units v cc voltage 20 v comp voltage 20 v ref voltage 20 v vcc, comp, ref current 50 ma operating junction temperature 150 oc lead temperature (soldering 10 seconds) 260 oc storage temperature range -65 to +150 oc electrical specifications electrical characteristics are guaranteed over t he full temperature range ?40oc acutechnology semiconductor inc. AQ102 www.acutechnology.com 4 rev. 1.3 may 3, 2005 typical performance characteristics line regulation (at 1ma) 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 2.2 6 10 14 18 supply voltage (v) output voltage change (mv) load regulation 0 1 2 3 4 5 6 1 5 10 15 20 load current (ma) output voltage change (mv) supply current vs load current 100 120 140 160 180 200 220 240 260 280 300 0 5 10 15 20 load current (m a) supply current (ua) power-supply rejection ratio vs frequency -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 0.1 1 10 100 1000 10000 100000 frequency (hz) psrr (db)
acutechnology semiconductor inc. AQ102 www.acutechnology.com 5 rev. 1.3 may 3, 2005 typical performance characteristics (contd.) fb bias current vs tem perature vcc=2.5v -70 -60 -50 -40 -30 -20 -10 0 -40 0 40 80 120 temperature (degrees c) fb bias current (na) vref@10ma 570 580 590 600 610 620 630 -40 0 40 80 120 temperature (degrees c) reference voltage (v) gain vs. frequency -10 10 30 50 70 90 110 0.01 0.1 1 10 100 1000 10000 frequency (khz) gain (db)
acutechnology semiconductor inc. AQ102 www.acutechnology.com 6 rev. 1.3 may 3, 2005 package dimensions sot23-3, sot23-4, sot23-5, sot23-6
acutechnology semiconductor inc. AQ102 www.acutechnology.com 7 rev. 1.3 may 3, 2005 package dimensions (contd.) sc70-3, sc70-4, sc70-5, sc70-6 contact information acutechnology semiconductor inc. tel: (408) 259-2300 3487 mckee rd. suite 52 fax: (408) 259-9160 san jose ca , usa 95127 website: www.acutec hnology.com disclaimer the information furnished by acutechnology in this data s heet is believed to be accurate and reliable. however, acutechnology assumes no responsibility for it s use. acutechnology reserves the right to change circuitry and specifications at any time without notific ation to the customer. life support policy acutechnology products are not designed or authorized for use as components in life support devices or systems where malfunction of a product can reasonably be ex pected to result in personal injury. life support devices or systems are devices or systems that (a) are intended fo r surgical implant into the body or (b) support or sustain life, and whose failure t o perform can be reasonably expected to result in a significant injury to the user.
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