20381 barents sea circle, lake forest, ca 92630 tel: (949) 452-0511 fax: (949) 452-0512 http://www.premiermag.com specifications subject to change without notice. 1 8-pin smd push-pull transformers electrical specifications at 25 o c - operating temperature range -40 o c to +85 o c * designed to support maxim's max253 * low profile 8-pin smd package * 1500vrms minimum isolation voltage * industry standard package * designed for > 125khz, 50% duty cycle * multiple configurations push-pull operation @ 1.0 watt output turns ratio (pri:sec 5%) part number primary ocl ( m h min.) typical application pri/sec hi-pot (vrms) PM-SM15 1ct : 1.00 150 1-4 +5v to +10v 1500 volt doubler driving a regulator pm-sm16 1ct : 1.38ct 150 1-4 +5v to +5v 1500 full wave center tap pm-sm17 1ct : 2.00ct 150 1-4 +3.3v to +5v 1500 full wave center tap pm-sm18 1ct : 0.667 150 1-4 +5v to +5v 1500 full wave bridge primary pins general characteristics mechanicals typical applications 0.70 (.028) 2.0 (.079) typ 6.00 (.236) 8.10 (.319) 10.1 (.398) 11.6 (.457) 12.0 (.472) 6.30 (.248) max pin#1 i.d. dot core clamp 1 2 3 4 6 5 8 7 10.7 (.421) max p m pm-smxx yyww 8x1.0 (.040) 3x2.0 (.079) 8x1.0 (.040) 10.1 (.398) 1 4 8 5 recommended p.c.b. layout dimensions in mm (inches) maxim max253 1 1 4 2 3 5 6 7 8 d1 d2 8 +5v 6 vcc 0.1uf mbr0520l mbr0520l 0.33uf 0.33uf regulated output 5v @ 200ma iso gnd voltage doubler maxim max253 1 1 4 2 3 5 6 7 8 d1 d2 8 +5v 6 vcc 0.1uf mbr0520l mbr0520l 0.33uf iso gnd full wave center tap maxim max253 1 1 4 2 3 5 6 7 8 pm-sm18 1ct : 0.667 d1 d2 8 +5v 6 vcc 0.1uf full wave bridge iso gnd 0.33uf pm-sm16 1ct : 1.38ct PM-SM15 1ct : 1 unregulated output 5v @ 200ma unregulated output 5v @ 200ma 78l05 maxim max253 1 1 4 2 3 5 6 7 8 d1 d2 8 +3.3v 6 vcc 0.1uf mbr0520l mbr0520l 0.33uf iso gnd full wave center tap pm-sm17 1ct : 2.0ct unregulated output 5v @ 100ma
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