thick film hybrid ic inchange stk73902 self-excitation type feedback control switching regulator ? features package dimensions ?q power mosfet devices unit:mm ?q feedback control for high output voltage precision ?q driver circuit on-chip ?q overcurrent protection circuit on-chip ?q pin compatible with all other devices in the same series of devices with 110 to 280w power ratings ?q higher oscillator frequency allows the use of smaller pulse transformers ? applications ?q crt/ctv power supplies ?q office automation equipment power supplies ? block diagram pin functions (1) amplifier circuit control (2) ground (3) tr1 gate (4) drive voltage input (5) starting voltage input (6) ocp setting level input (7) ocp input-voltage dependency detection input (8) tr1 source (9) tr1 source (11) tr1 drain (12) tr1 drain
thick film hybrid ic inchange specifications ? maximum ratings at ta=25 ?? , tc=25 ?? unless otherwise specified parameter symbol conditions ratings unit operating substrate temperature t c max recommended value is 105 ?? 115 ?? ac input voltage v ac specified test circuit 140 vrms operating temperature topr -10 to+85 ?? storage temperature tstg -30 to+115 ?? maximum output power wo max specified test circuit v o =135v 180 w (tr1) drain current i d 10 a pulse drain current i d(pulse) 35 a drain reverse current i dr 10 a gate-source voltage v gss ? 30 v allowable power dissipation p d 100 w chip junction temperature tj max 150 ?? (zd1) allowable power dissipation p zd1 500 mw chip junction temperature tj(zd1)max 125 ?? ? recommended operating ranges at ta=25 ?? parameter symbol conditions ratings unit pin 4 input voltage v 4 ? 8 to ? 24 v oscillator frequency f osc 20 to 100 khz ? operating characteristics at ta=25 ?? ,tc=25 ?? ( unless otherwise specified,sp ecified test circuits) parameter symbol conditions min typ max unit (tr1) drain-source breakdown voltage v (br)dss i d =1ma,v gs =0v 500 v gate-source cutoff voltage v gs(off) i d =1ma,v ds =10v 2.5 3.5 5.0 v on resistance r ds(on) i d =5a,v gs =10v 0.6 0.9 |? input capacitance ciss v ds =25v,v gs =0v,f=1mhz 1400 pf (zd1) zener voltage v z i z =5ma 23.7 26.3 v
thick film hybrid ic inchange ? series organization these devices form a series wi th varying output power ratings maximum ratings operating characteristics type no. v dss [v] tstg [ ?? ] t c max [ ?? ] tj max [ ?? ] i d [a] input voltage [v] output power [w] on resistance [ |? ] stk73902 6.0 110 1.4 stk73903 10.0 180 0.6 STK73904 12.0 210 0.55 stk73905 15.0 280 0.3 stk73906 3.0 110 5.0 stk73907 5.0 180 3.0 stk73908 6.0 210 2.0 stk73909 500 900 -30 to +115 +115 +150 8.0 85 to 132 170 to 264 280 1.2
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