LM7905XE document number 6044 issue: 2 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. 1.5 amp negative voltage regulator features ? output voltage of -5v thermal overload protection short circuit protection 3 output transistor soa protection v i dc input voltage p d power dissipation t j operating junction temperature range t stg storage temperature 35v internally limited ?55 to 150c ?65 to 150c absolute maximum ratings (t case = 25c unless otherwise stated) 1.39 (0.055) 1.15 (0.045) 0.76 (0.030) 0.51 (0.020) 1.39 (0.055) 1.02 (0.040) 15 16 13 12 14 3 4 5 6 7 17 18 1 2 11 10 8 9 9.14 (0.360) 8.64 (0.340) 1.27 (0.050) 1.07 (0.040) 2.16 (0.085) 7.62 (0.300) 7.12 (0.280) 1.65 (0.065) 1.40 (0.055) 0.33 (0.013) 0.08 (0.003) 0.43 (0.017) 0.18 (0.007 rad. rad. pins 4,5 ? v out pins 6,7,8,9,10,11,12,13 ? gnd pins 15,16,17,18,1,2 ? v in lcc4 ceramic surface mount mechanical data dimensions in mm (inches)
LM7905XE document number 6044 issue: 2 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. LM7905XE parameter test conditions min. typ. max. units -4.9 -5 -5.1 -4.8 -5.2 325 350 125 250 25 100 25 100 1 1.9 12 0.2 0.4 0.2 0.5 100 54 54 1.4 5 0.6 1.2 2.4 3.3 0.2 -7.3 v mv mv ma ma v db v m ? a mv c v output voltage line regulation load regulation quiescent current quiescent current change output noise voltage ripple rejection dropout voltage output resistance short circuit current peak output current average temperature coefficient of v o input voltage required to maintain line regulation i o = 500ma v in = -10v i o = 5ma to i max v in = -7.5v to -20v p d p max t j = -55 to 150c v in = -7v to -25v i o = 0.5 i max v in = -7.5v to -20v t j = -55 to 150c v in = -8v to -12v i o i max t j = -55 to 150c i o = 5ma to 1.5a v in = -10v i o = 5ma to i max t j = -55 to 150c i o 0.5 i max v in = -10v t j = -55 to 150c i o = 5ma to i max v in = -10v t j = -55 to 150c f = 10hz to 100khz v in = -10v f = 120hz i o i max v in = -8v to -18v i o 0.5 i max t j = -55 to 150c i o = i max f = 1 khz v in = -35v v in = -10v i o = 5ma i o i max 1) all characteristics are measured with a capacitor across the input of 0.22 f and a capacitor across the output of 0.1 f. 2) all characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (t p 10ms, ? 5%). output voltage changes due to changes in internal temperature must be taken into account separately. 3) external current limiting circuitry may be required in order to maintain safe area of operation. v o ? v o ? v o i q ? i q v n ? v in ? v o r o i sc i pk
LM7905XE document number 6044 issue: 2 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. gnd v in v out c1* 2.2 f tant. c2** 1 f tant. input output gnd v in v out c1 2.2 f tant. input output r1 r2 c2 1 f tant. r1 gnd v in v out c1 2.2 f tant. input output i out c2 1 f tant. fixed output regulator * required if the regulator is located far from the power supply. ** required for stability. 25 f electrolytic may be substituted. current regulator adjustable output regulator applications information (r1+r2) v out v reg r1 v reg i out = + i q r1
|
