document number 2831 issue 3 ip137 a series ip137a series ip337 a series ip337a series lm137 a series lm137a series semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information f urnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omi ssions discovered in its use. semelab encourages customers to verify that datasheets are current before placing orders. pin 1 ? adj. pin 2 ? v out case ? v in k package ? to?3 (to-204aa) pin 1 ? adj. pin 2 ? v out case ? v in r package ? to?66 (to-213aa) 1.5 amp negative adjustable voltage regulator v i?o input - output differential voltage ? standard ? hv series i o output current p d power dissipation t j operating junction temperature range t stg storage temperature 40v 50v internally limited internally limited see order information table -65 to 150c absolute maximum ratings (t case = 25c unless otherwise stated) features output voltage range of: 1.25 to 40v for standard version 1.25 to 50v for ?hv version 1% output voltage tolerance 0.3% load regulation 0.01% / v line regulation complete series of protections: current limiting thermal shutdown soa control 12 3 3 12 pin 1 ? adj. pin 2 ? v in pin 3 ? v out case ? v in t package ? to ? 220 pin 1 ? adj. pin 2 ? v in pin 3 ? v out case ? v in g package ? (to ? 257aa) 123 1 23 pin 1 ? adj. pin 2 ? v in pin 3 ? v out smd1 (to276ab) ceramic surface mount pin 1 ? adj. pin 2 ? v in pin 3 ? v out ig package ? (to ? 257aa) (isolated) 13 2 pin 1 ? adj. pin 2 ? v in pin 3 ? v out smd05 (to-276aa) ceramic surface mount 13 2 1 23 pins 4,5 ? adj. pins 6,7,8,9,10,11,12,13 ? v out pins 15,16,17,18,1,2 ? v in lcc4 ceramic surface mount 15 16 13 12 14 17 18 1 2 3 4 5 6 7 11 10 8 9
document number 2831 issue 3 ip137 a series ip137a series ip337 a series ip337a series lm137 a series lm137a series semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information f urnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omi ssions discovered in its use. semelab encourages customers to verify that datasheets are current before placing orders. 1) regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. changes in output voltage d ue to heating effects are covered under thermal regulation specifications. load regulation is measured at a point 1 / 8 ? from the bottom of the package for the to ? 3 and to ? 66 packages, at the junction of the wide and narrow portion of the output lead for the smd packages, and 1 / 8 ? below the base of the package on the output pin of the to ? 257 package. 2) test conditions unless otherwise stated: v in ? v out = 5v , i out = 0.5a , p max = 20w , i max = 1.5a, v max = 40v for standard series , 50v for hv series. ip137a , ip137ahv ip137 , ip137hv lm137a , lm137ahv lm137 , lm137hv parameter test conditions min. typ. max. min. typ. max. units i out = 10ma i out =10ma to i max t j = -55 to 150 c v in ? v out = 3v to v max p p max v in ? v out = 3v to v max t j = -55 to 150 c i out = 10ma to i max v out 5v v out 5v i out = 10ma to i max v out 5v t j = -55 to 150 cv out 5v t p = 10ms t a = 25 c lcc4 package c adj = 0 v out = -10v c adj = 10 f f = 120hz t j = -55 to 150 c t j = -55 to 150 c i out = 10ma to i max t j = -55 v in ? v out = 3v to 40v to 150 cv in ? v out = 3v to 50v (hv series) v in ? v out 40v t j = -55 to 150 c v in ? v out 10v v in ? v out 15v v in ? v out = 40v t j = -55 to 150 c v in ? v out = 50v (hv series) t j = -55 to 150 c t a = +125 c t = 1000 hrs f = 10 hz to 10 khz t a = 25 c k package r package g package lcc4 package -1.225 -1.25 -1.275 -1.200 -1.250 -1.300 0.010 0.020 0.020 0.050 15 25 0.3 0.5 20 50 0.3 1 0.002 0.02 0.040 60 66 77 65 100 0.5 5 25 36 2.5 5 1.2 3 1.5 2.2 3.2 0.24 0.4 0.2 0.4 0.8 0.6 0.3 1 0.003 2.3 3 57 35 13 -1.238 -1.25 -1.262 -1.220 -1.25 -1.280 0.005 0.010 0.010 0.030 525 0.1 0.5 10 50 0.2 1 0.002 0.020 0.040 60 66 70 80 65 100 0.2 2 1.0 5 2.0 6 2.5 5 1.2 3 1.5 2.2 3.2 0.24 0.4 1 0.2 0.4 0.8 0.6 1.5 0.3 1 0.003 2.3 3 57 35 13 v ref reference voltage ? v out line regulation 1 ? i out ? v out load regulation 1 ? i out thermal regulation ripple rejection i adj adjust pin current ? i adj adjust pin current change i min minimum load current i cl current limit ? v out temperature ? temp stability ? v out long term stability ? time e n rms output noise (% of v out ) r jc thermal resistance junction to case v v %/v mv % mv % %/w db db a a ma a % % % c/w
document number 2831 issue 3 ip137 a series ip137a series ip337 a series ip337a series lm137 a series lm137a series semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information f urnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omi ssions discovered in its use. semelab encourages customers to verify that datasheets are current before placing orders. i out = 10ma i out = 10ma to i max v in ? v out = 3v to v max p p max t j = 0 to 125 c v in ? v out = 3v to v max t j = 0 to 125 c i out = 10ma to i max v out 5v v out 5v i out = 10ma to i max v out 5v t j = 0 to 125 cv out 5v t p = 10ms t a = 25 c c adj = 0 v out = 10v c adj = 10 f f = 120hz t j = 0 to 125 c t j = 0 to 125 c i out = 10ma to i max t j = 0 v in ? v out = 3v to 40v to 125 cv in ? v out = 3v to 50v (hv series) v in ? v out 40v t j = 0 to 125 c v in ? v out 10v v in ? v out 15v v in ? v out = 40v t j = 0 to 125 c v in ? v out = 50v (hv series) t j = 0 to 125 c t = 1000 hrs f = 10 hz to 10 khz t a = 25 c k package t package lcc4 package -1.213 -1.25 -1.287 -1.200 -1.250 -1.300 0.010 0.040 0.020 0.070 15 50 0.3 1 20 70 0.3 1.5 0.003 0.04 60 66 77 65 100 0.5 5 25 36 2.5 10 16 1.5 2.2 3.5 0.15 0.4 0.1 0.4 0.8 0.6 0.3 1 0.003 2.3 3 4 13 -1.238 -1.25 -1.262 -1.220 -1.25 -1.280 0.005 0.010 0.010 0.030 525 0.1 0.5 10 50 0.2 1 0.002 0.020 60 66 70 80 65 100 0.2 2 1.0 5 2.0 6 2.5 5 1.2 3 1.5 2.2 3.5 0.24 0.4 1 0.2 0.4 0.8 0.6 1.5 0.3 1 0.003 2.3 3 45 13 v ref reference voltage ? v out line regulation 1 ? i out ? v out load regulation 1 ? i out thermal regulation ripple rejection i adj adjust pin current ? i adj adjust pin current change i min minimum load current i cl current limit ? v out temperature ? temp stability ? v out long term stability ? time e n rms output noise (% of v out ) r jc thermal resistance junction to case ip337a ip337, ip337hv ip337ahv lm337 , lm337hv parameter test conditions min. typ. max. min. typ. max. units v v %/v mv % mv % %/w db db a a ma a % % % c/w 1) regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. changes in output voltage d ue to heating effects are covered under thermal regulation specifications. load regulation is measured at a point 1 / 8 ? from the bottom of the package for the to ? 3 and to ? 66 packages, at the junction of the wide and narrow portion of the output lead for the smd packages, and 1 / 8 ? below the base of the package on the output pin of the to ? 257 package. 2) test conditions unless otherwise stated: v in ? v out = 5v , i out = 0.5a , p max = 20w , i max = 1.5a v max = 40v for standard series , 50v for hv series.
document number 2831 issue 3 ip137 a series ip137a series ip337 a series ip337a series lm137 a series lm137a series semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information f urnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omi ssions discovered in its use. semelab encourages customers to verify that datasheets are current before placing orders. r3 1.5k 1% adj ip337a v in v out r1 1k 1% r2 1 f ? v out solid tantalum 7v * ? v in * r2 = ( ) v out 9.08 x 10 -3 ? 908 ? c3 10 f r2 adj ip137a v in v out 1n4002 r1 120 ? ? v in adj ip137a v in v out 1n4002 2 f c1 1 f solid tantalum ? v out1 reg #1 2 f reg #2 1 f solid tantalum out2 ? v adj ip137a v in v out 1n4002 2 f reg #n 1 f solid tantalum out n ? v adj ip337a v in v out d2 1n4002 ? v out in ? v r5** 100 ? 1% r3 5k 10 f v in v out adj ip317a r1** 100 ? 1% 10 f 2.2 f 2.2 f d1 1n4002 in +v +v out r2 5k 1% r4 5k 1% adj v in v out ( ? ) i (+) c1 1 f solid tanatalum ip337a r s 0.8 ? 250 ? r s i = 65 a + 1.25 v r s current regulator dual tracking supply applications information high stability regulator the output stability, load regulation, line regulation, thermal regulation, temperature drift, long term drift, and noise, can be improved by a factor of 6.6 over the standard regulator configuration. this assumes a zener has 20ppm/ c maximum drift and about 10 times lower noise than the regulator. multiple tracking regulators in the application shown below, regulator #2 to ? n ? will track regulator #1 to within 24mv initially, and to 60mv over all load, line, and temperature conditions. if any regulator output is shorted to ground, all other outputs will drop to -2v. load regulation of regulators 2 to ? n ? will be improved by v out / 1.25v compared to a standard regulator, so regulator #1 should be the one which has the lowest load current. * solid tantalum ** r1 or r5 may be trimmed slightly to improve tracking. ig ? pack part g ? pack k ? pack r ? pack t ? pack temp. number (to257) smd1 smd05 lcc4 (to3) (to66) (to220) range lm137 -55 to +150 c lm137hv ? lm137a ? lm137ahv ? ip137 ? ip137hv ? ip137a ? ip137ahv ? lm337 0 to 125 c lm337hv ? ip337 ? ip337hv ? ip337a ? ip337ahv ? order information
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