zldo1117 zldo1117 document number: ds32018 rev. 3 1 of 12 www.diodes.com february 2010 ? diodes incorporated a product line o f diodes incorporated 1a low dropout positive regulator 1.2v, 1.5v, 1. 8v, 2.5v, 3.3v, 5.0v and adjustable outputs description pin assignments zldo1117 is a low dropout pos itive adjustable or fixed- mode regulator with 1a output current capability. the zldo1117 has a 2% tolerance across the industrial temperature range and is guaranteed to have lower than 1.2v dropout at full load current making it ideal to provide well-regulated outputs of 1.2v to 5.0v with input supply voltages up to 18v. the zldo1117 is ideally suited to provide well-regulated supplies for low voltage ic applications such as high- speed bus termination and low current 3.3v logic supply across the whole industrial temperature range. sot223 to252 features ? 1.2v maximum dropout at full load current ? 2% tolerance over temperature, line and load variations ? fast transient response ? output current limiting ? built-in thermal shutdown ? good noise rejection ? suitable for use with mlcc capacitors ? -40 to 125c junction temperature range ? available in ?green? molding compound (no br, sb) with lead free finish/rohs compliant (note 1) typical application circuit 1a i/o ? 1.8v core regulator 3.3v 4.7f mlcc zldo1117-18 1.8v 4.7f mlcc
zldo1117 zldo1117 document number: ds32018 rev. 3 2 of 12 www.diodes.com february 2010 ? diodes incorporated a product line o f diodes incorporated absolute maximum ratings symbol paramete r rating unit v in input supply voltage (relative to ground) -0.03 to 18 v t j junction temperature 150 c power dissipation see soa curve t st storage temperature -65 to 150 c safe operation area (soa) curve esd susceptibility hbm human body model 4 kv mm machine model 400 v (semiconductor devices are esd sensitive and may be damaged by expos ure to esd events. suitable esd precautions should be take n when handling and transporting these devices.) operation above the absolute maximum rating may cause device failure. operation at the absolute maximum ratings, for extended periods, may reduce device reliability. unless otherwise stated voltages specif ied are relative to the anode pin. these are stress ratings only. operation outside the absolute maximum ratings may cause device failure. recommended operating conditions symbol paramete r min max unit v in input voltage 2.7 5 18 v i o output current 0.01 1 a t j o perating junction temperature range -40 125 c package thermal data thermal resistance package unit junction-to-ambient, ja sot223-3l 3 to252-3l 4 107 73 c/w junction-to-case, jc sot223-3l 3 to252-3l 4 16 12 c/w notes: 2. zldo1117 contains an internal thermal limiting circuit t hat is designed to protect the regulator in the event that th e maximum junction temperature exceeded. when activated, typically at 150c, the regulator output switches off and then back on as the die co ols. 3. test condition for sot223-3l: ta = 27 c, no air flow, device mounted on 2?x2? po lyimide pcb, 2 oz copper, 5.6mmx5.6mm pad. 4. test condition for to252-3l: ta = 27c, no air flow, devi ce mounted on 2?x2? polyimide pcb, 1 oz copper, 2cmx2cm pad. 5. ensures correct operation without entering dropout. device will continue to operate below this minimum input voltage under dropout conditions. 0 0.2 0.4 0.6 0.8 1 1.2 0 5 10 15 20 25 v in - v out (v) i load (a) soa
zldo1117 zldo1117 document number: ds32018 rev. 3 3 of 12 www.diodes.com february 2010 ? diodes incorporated a product line o f diodes incorporated electrical characteristics (under operating conditions) parameter conditions t a min typ. max unit reference voltage zldo1117-adj (v in -v out ) = 2v, i o = 10ma 25 1.238 1.250 1.263 v v out +1.4v < v in < 10v, 10ma < i o < 1a ft 1.225 1.275 output voltage zldo1117-1.2 i o = 10ma, v in = 3.2v 25 1.188 1.200 1.212 v 10ma < i o < 1a, 2.7v < v in < 12v ft 1.176 1.224 zldo1117-1.5 i o = 10ma, v in = 3.5v 25 1.485 1.500 1.515 v 0 < i o < 1a, 2.9v < v in < 12v ft 1.470 1.530 zldo1117-1.8 i o = 10ma, v in = 3.8v 25 1.782 1.800 1.818 v 0 < i o < 1a, 3.2v < v in < 12v ft 1.764 1.836 zldo1117-2.5 i o = 10ma, v in = 4.5v 25 2.475 2.500 2.525 v 0 < i o < 1a, 3.9v < v in < 12v ft 2.450 2.550 zldo1117-3.3 i o = 10ma, v in = 5.3v 25 3.267 3.300 3.333 v 0 < i o < 1a, 4.7v < v in < 12v ft 3.235 3.365 zldo1117-5.0 i o = 10ma, v in = 7v 25 4.95 5.000 5.05 v 0 < i o < 1a, 6.4v < v in < 12v ft 4.900 5.100 line regulation zldo1117-adj zldo1117-1.2 i o = 10ma, v out +1.5v zldo1117 zldo1117 document number: ds32018 rev. 3 4 of 12 www.diodes.com february 2010 ? diodes incorporated a product line o f diodes incorporated typical characteristics -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature (c) ? vout (%) adjustable version i load = 10ma -0.01 0 0.01 0.02 0.03 0.04 0.05 0.06 -50 -25 0 25 50 75 100 125 temperature (c) line regulation (%) v out +1.5v |