special features electrical specs 20 watts aa20c ? 20 w, single output ? 2:1 input range ? unencapsulated package ? 1.6" x 2.0" x 0.38 case ? replaces aa20b series ? industry standard package operating base temperature range: -40c to +105c (full load, no derating) storage temperature: -55c to +125c humidity: 5% to 95% (non-condensing) emi rfi shielding: six sided (except 033-m1) mtbf: 361,000 hours (mil hdbk-217) ul ul1950 recognition csa csa22.2-950 recognition tuv en60950 recognition input input range 36 to 75 vdc input capacitance 1.6f typ (48 models) no load input power 150mw max efficiency 84% typical (5v) output voltage tolerance 1.0% overall regulation 2% max noise/ripple 1% (mv p-p) short circuit protection continuous power cycle overvoltage protection zener clamp (125% of nom) transient response 1 msec typi cal (50% step load change to within 1%vo) temperature coefficient 0.02 c switching frequency 400khz isolation i/o isolation 1500 vdc isolation resistance 1 x 109 (ohms) isolation capacitance 220pf environmental total power: 20 watts input voltages: 48v no. of outputs: single safety astec industry standard americas (usa): 1-888-41-astec europe (uk): 44 (1384) 842-211 asia (hk): 852-2437-9662 28 w9959_02_dcdc_001-073_73 2/8/02 3:19 pm page 28
europe astec house, waterfront business park merry hill, dudley west midlands, dy5 1lx, uk telephone: 44 (1384) 842-211 facsimile: 44 (1384) 843-355 americas 5810 van allen way carlsbad, ca 92008 telephone: 760-930-4600 facsimile: 760-930-0698 ordering information asia units 2111-2116, level 21 tower1, metroplaza 223, hing fong road fwai fong, new territories hong kong telephone: 852-2437-9662 facsimile: 852-2402-4426 input output efficiency model number voltage voltage 36-75 v 3.3v @ 6.0 a 79% aa20c-048l-0335-m1 36-75 v 5.0v @ 4.0 a 84% aa20c-048l-050s 36-75 v 12v @ 2.0 a 87% aa20c-048l-120s notes: en a b le f unc ti on "1" = negative logic enable (std, without "1 or 4" = no enable) "4" = positive logic enable (std, without "1 or 4" = no enable) t r im f e a tur e "9" = trim feature (std, without "9" no trim) single output 1. +vin 2. -vin 3. no pin 4. enable 5. no pin 6. output 1 7. com 8. trim note: pins 0.040 in dia x 0.15 in min warranty: 1 yr case material: metal base/cover weight: 2.0 oz./56 grams. pin assignments aa20c astec industry standard 0.40 (10.15) 0.15 min (3.81) 0.40 (1.01) dia typ 0.70 (17.75) 1.60 (40.64) 0.40 (10.16) 0.20 (5.08) 0.20 (5.08) .40 (10.16) .40 (10.16) .40 (10.16) 1.80 (45.72) 2.00 (50.80) 0.10 (2.54) bottom view all dimensions are in inches (mm) 1 2 3 4 5 6 7 8 6 trim down 8 trim up 7 8 6 adj. 7 8 trim down trim up trim single output 29 www.astec.com w9959_02_dcdc_001-073_73 2/8/02 3:19 pm page 29
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