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1/12 december 2004 three terminal adjustable or fixed output voltage 1.5v,1.8v, 2.5v, 3.0, 3.3v output current up to 7.5a 1.4v max dropout voltage at full load line regulation: max 0.2% over full temperature range load regulation: max 0.5% over full temperature range output current limit thermal shutdown protection with hysteresis wide operating temperature range -40c to 125c pinout compatibility with standard adjustable vreg description the kd1083 is a low drop linear voltage regulator, proposed both in adjustable and fixed version and designed for use in applications requiring output currents up to 7.5a. dropout voltage is guaranteed not to exceed 1.4v at maximum output current while it decreases at lighter loads. the kd1083 also features an on-chip output current limit function and a thermal shutdown protection with hysteresis, preventing from excessive power dissipation in case of insufficient heatsinking. the kd1083 is fully pin to pin compatible with the older 3-terminal adjustable regulators, but it has better performances in terms of drop and output voltage precision. on chip trimming allows the regulator to reach a very tight output voltage tolerance, within 2% at 25c and 2% over the full temperature range. unlike voltage regulators using a pnp transistor as series pass element in which a considerable fraction of the output current is wasted as quiescent current, the ld1083 quiescent current flows almost entirely into the load, improving the efficiency. only a 10f minimum capacitor is required for output stability. kd1083 7.5a low drop positive voltage regulator adjustable and fixed figure 1: schematic diagram to-220 d 2 pak rev. 2
kd1083 2/12 table 1: absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditi on is not implied. table 2: thermal data figure 2: connection diagram (top view) table 3: order codes (*) available in tape & reel with the suffix "r" for fixed version and "-r" for adjustable version. figure 3: typical application circuits symbol parameter value unit v in dc input to output voltage from -0.3 to 10 v i o output current internally limited a p d power dissipation internally limited w t stg storage temperature range -55 to +150 c t op operating junction temperature range -40 to +125 c symbol parameter to-220 d 2 pak unit r thj-case thermal resistance junction-case 33c/w r thj-amb thermal resistance junction-ambient 50 62.5 c/w to-220 d 2 pak(*) output voltage kd1083v15 kd1083d2t15 1.5v kd1083v18 kd1083d2t18 1.8v kd1083v25 kd1083d2t25 2.5v kd1083v30 kd1083d2t30 3.0v kd1083v33 kd1083d2t33 3.3v kd1083v kd1083d2t adjustable to-220 d 2 pak r 2 v o = v ref (1 + ?? ) r 1
kd1083 3/12 table 4: electrical characteristics of kd1083 (v in =3v, c i = c o =10 f, t j = -40 to 125c, unless oth- erwise specified.) note 1: see short-circuit current curve for available output current at fixed dropout. table 5: electrical characteristics of kd1083#15 (v in =3.25v, c i = c o =10 f, t j = -40 to 125c, unless otherwise specified.) note 1: see short-circuit current curve for available output current at fixed dropout. symbol parameter test conditions min. typ. max. unit v ref reference voltage i o =10ma, (v in -v o ) = 3v, t j = 25c 1.237 1.25 1.262 v i o = 0.01 to 7.5a, (v in -v o ) = 1.5 to 5.75v (note1) 1.225 1.25 1.275 v ? v ref line regulation i o =10ma, (v in -v o ) = 1.5 to 5.75v 0.015 0.2 % ? v ref load regulation (v in -v o )=3v, i o = 10ma to 7.5a 0.3 0.5 % v d dropout voltage ? v o =2%, i o =7.5a 1.05 1.4 v i sc short circuit current (v in -v o ) = 1.5 to 5.75v 8.5 a i o(min) minimum load current (v in -v o ) = 1.5 to 5.75v 5 10 ma i adj adjust pin current i o = 10ma to 7.5a 40 80 a ? i adj adjust pin current change i o = 10ma to 7.5a, (v in -v o ) = 1.5 to 5.75v 0.2 5 a svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 7.5a, (v in -v o )=3v, v pp =1v 60 75 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz, i o =10ma, (v in -v o ) = 3v 0.003 % t shdn thermal shutdown threshold 175 c t hyst thermal shutdown hysteresis 5c symbol parameter test conditions min. typ. max. unit v o output voltage i o =10ma, (v in -v o )=3v, t j = 25c 1.485 1.5 1.515 v i o = 0 to 7.5a, (v in -v o ) = 1.5 to 5.5v (note1) 1.47 1.5 1.53 v ? v o line regulation i o =10ma, (v in -v o ) = 1.5 to 5.5v 0.015 0.2 % ? v o load regulation (v in -v o )=3v, i o = 0 to 7.5a 0.3 0.5 % v d dropout voltage ? v o =2%, i o =7.5a 1.05 1.4 v i sc short circuit current (v in -v o ) = 1.5 to 5.5v 8.5 a i d quiescent current (v in -v o ) = 1.5 to 5.5v, i o =0a 5 10 ma svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 7.5a, (v in -v o ) = 3v, v pp =1v 58.6 73.4 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz, i o =10ma, (v in -v o )=3v 0.003 % t shdn thermal shutdown threshold 175 c t hyst thermal shutdown hysteresis 5c
kd1083 4/12 table 6: electrical characteristics of kd1083#18 (v in =3.5v, c i = c o =10 f, t j = -40 to 125c, unless otherwise specified.) note 1: see short-circuit current curve for available output current at fixed dropout. table 7: electrical characteristics of kd1083#25 (v in =4.25v, c i = c o =10 f, t j = -40 to 125c, unless otherwise specified.) note 1: see short-circuit current curve for available output current at fixed dropout. symbol parameter test conditions min. typ. max. unit v o output voltage i o =10ma, (v in -v o )=3v, t j = 25c 1.782 1.8 1.818 v i o = 0 to 7.5a, (v in -v o ) = 1.5 to 5.2v (note1) 1.764 1.8 1.836 v ? v o line regulation i o =10ma, (v in -v o ) = 1.5 to 5.2v 0.015 0.2 % ? v o load regulation (v in -v o )=3v, i o = 0 to 7.5a 0.3 0.5 % v d dropout voltage ? v o =2%, i o =7.5a 1.05 1.4 v i sc short circuit current (v in -v o ) = 1.5 to 5.2v 8.5 a i d quiescent current (v in -v o ) = 1.5 to 5.2v, i o =0a 5 10 ma svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 7.5a, (v in -v o ) = 3v, v pp =1v 57 71.8 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz, i o =10ma, (v in -v o )=3v 0.003 % t shdn thermal shutdown threshold 175 c t hyst thermal shutdown hysteresis 5c symbol parameter test conditions min. typ. max. unit v o output voltage i o =10ma, (v in -v o )=3v, t j = 25c 2.475 2.5 2.525 v i o = 0 to 7.5a, (v in -v o ) = 1.5 to 4.5v (note 1) 2.45 2.5 2.55 v ? v o line regulation i o =10ma, (v in -v o ) = 1.5 to 4.5v 0.015 0.2 % ? v o load regulation (v in -v o )=3v, i o = 0 to 7.5a 0.3 0.5 % v d dropout voltage ? v o =2%, i o =7.5a 1.05 1.4 v i sc short circuit current (v in -v o ) = 1.5 to 4.5v 8.5 a i d quiescent current (v in -v o ) = 1.5 to 4.5v, i o =0a 5 10 ma svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 7.5a, (v in -v o ) = 3v, v pp =1v 54.1 68.9 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz, i o =10ma, (v in -v o )=3v 0.003 % t shdn thermal shutdown threshold 175 c t hyst thermal shutdown hysteresis 5c
kd1083 5/12 table 8: electrical characteristics of kd1083#30 (v in =4.75v, c i = c o =10 f, t j = -40 to 125c, unless otherwise specified.) note 1: see short-circuit current curve for available output current at fixed dropout. table 9: electrical characteristics of kd1083#33 (v in =5.0v, c i = c o =10 f, t j = -40 to 125c, unless otherwise specified.) note 1: see short-circuit current curve for available output current at fixed dropout. symbol parameter test conditions min. typ. max. unit v o output voltage i o =10ma, (v in -v o )=3v, t j = 25c 2.97 3.0 3.03 v i o = 0 to 7.5a, (v in -v o ) = 1.5 to 4v (note 1) 2.94 3 3.06 v ? v o line regulation i o =10ma, (v in -v o ) = 1.5 to 4v 0.015 0.2 % ? v o load regulation (v in -v o )=3v, i o = 0 to 7.5a 0.3 0.5 % v d dropout voltage ? v o =2%, i o =7.5a 1.05 1.4 v i sc short circuit current (v in -v o ) = 1.5 to 4v 8.5 a i d quiescent current (v in -v o ) = 1.5 to 4v, i o =0a 5 10 ma svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 7.5a, (v in -v o ) = 3v, v pp =1v 52.5 67.3 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz, i o =10ma, (v in -v o )=3v 0.003 % t shdn thermal shutdown threshold 175 c t hyst thermal shutdown hysteresis 5c symbol parameter test conditions min. typ. max. unit v o output voltage i o =10ma, (v in -v o )=3v, t j = 25c 3.267 3.3 3.333 v i o = 0 to 7.5a, (v in -v o ) = 1.5 to 3.7v (note 1) 3.234 3.3 3.366 v ? v o line regulation i o =10ma, (v in -v o ) = 1.5 to 3.7v 0.015 0.2 % ? v o load regulation (v in -v o )=3v, i o = 0 to 7.5a 0.3 0.5 % v d dropout voltage ? v o =2%, i o =7.5a 1.05 1.4 v i sc short circuit current (v in -v o ) = 1.5 to 3.7v 8.5 a i d quiescent current (v in -v o ) = 1.5 to 3.7v, i o =0a 5 10 ma svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 7.5a, (v in -v o ) = 3v, v pp =1v 51.7 66.5 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz, i o =10ma, (v in -v o )=3v 0.003 % t shdn thermal shutdown threshold 175 c t hyst thermal shutdown hysteresis 5c
kd1083 6/12 typical characteristics (c i =c o =10f(tantalum), unless otherwise specified) figure 4: reference voltage vs temperature figure 5: reference voltage vs temperature figure 6: reference voltage vs temperature figure 7: line regulation vs temperature figure 8: load regulation vs temperature figure 9: dropout voltage vs temperature
kd1083 7/12 figure 10: dropout voltage vs temperature figure 11: adjust pin current vs temperature figure 12: quiescent current vs temperature figure 13: minimum load current vs temperature figure 14: dropout voltage vs output current figure 15: supply voltage rejection vs output current
kd1083 8/12 figure 16: short circuit current vs dropout voltage figure 17: supply voltage rejection vs temperature figure 18: line transient figure 19: line transient figure 20: load transient figure 21: load transient v o =10v v in v o v in =from 12 to 13v, i o =100ma, c i = 1 f(tantalum), c o =10 f(tan- talum) v in v o v o =10v v in =from 13 to 12v, i o =100ma, c i = 1 f(tantalum), c o =10 f(tan- talum) v o =10v v o i o v i =12 v, i o =from 0.1a to 7.5a, c i = 10 f(tantalum), c o =10 f(tan- talum) v o =10v v o i o v i =12 v, i o =from 7.5a to 0.1a, c i = 10 f(tantalum), c o =10 f(tan- talum)
kd1083 9/12 dim. mm. inch min. typ max. min. typ. max. a 4.4 4.6 0.173 0.181 a1 2.49 2.69 0.098 0.106 a2 0.03 0.23 0.001 0.009 b 0.7 0.93 0.027 0.036 b2 1.14 1.7 0.044 0.067 c 0.45 0.6 0.017 0.023 c2 1.23 1.36 0.048 0.053 d 8.95 9.35 0.352 0.368 d1 8 0.315 e 10 10.4 0.393 0.409 e1 8.5 0.335 g 4.88 5.28 0.192 0.208 l 15 15.85 0.590 0.624 l2 1.27 1.4 0.050 0.055 l3 1.4 1.75 0.055 0.068 m 2.4 3.2 0.094 0.126 r 0.4 0.016 v2 0? 8? 0? 8? d 2 pak mec hanical data p011p6g
kd1083 10/12 dim. mm. inch min. typ max. min. typ. max. a 4.40 4.60 0.173 0.181 c 1.23 1.32 0.048 0.051 d 2.40 2.72 0.094 0.107 d1 1.27 0.050 e 0.49 0.70 0.019 0.027 f 0.61 0.88 0.024 0.034 f1 1.14 1.70 0.044 0.067 f2 1.14 1.70 0.044 0.067 g 4.95 5.15 0.194 0.203 g1 2.4 2.7 0.094 0.106 h2 10.0 10.40 0.393 0.409 l2 16.4 0.645 l4 13.0 14.0 0.511 0.551 l5 2.65 2.95 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.2 6.6 0.244 0.260 l9 3.5 3.93 0.137 0.154 dia. 3.75 3.85 0.147 0.151 to-220 mechanical dat a p011c
kd1083 11/12 table 10: revision history date revision description of changes 16-dec-2004 2 maturity change.
kd1083 12/12 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics all other names are the property of their respective owners ? 2004 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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