north america (usa): 1-888-41-astec europe (uk): 44 (1384) 842-211 asia (hk): 852-2437-9662 70 special features electrical specs 25 watts aa25n ? ideal for telecom/networking applications ? high efficiency ? unencapsulated 2.0 x 2.0 x 0.50 package. ? integral heat spreader available ? 100c baseplate temperature ? enable (on/off) ? thermal protection ? 350khz switching frequency ? under voltage lockout input input range 18-36 vdc (24 vdc nominal) 36 - 75vdc (48vdc nominal) input capacitance 2mf typical input reverse voltage protection fuse recommended input surge voltage 100v for 100ms (048l) 50v for 100ms (024l) 36v for 100ms (012l) input reflected ripple <10ma (p-p) see note 2 undervoltage lockout vin<32v (-048l only) efficiency 82% typical output voltage tolerance main output 1.0% aux output 3.0% dual output 2.0% line regulation main output 0.1% aux output 0.5% dual output 0.2% load regulation main output 0.75% aux output 3.0% dual output 0.5% (10% to 100% load) note 6. noise/ripple 50mv p-p, singles 100mvp-p, dual , triple short circuit protection continuous power cycle overvoltage protection 120% of v0, typ transient response 2% vo typ; recovery <500msec typ (25% step load change to within 1%vo) temperature coefficient 0.2%/c switching frequency 350khz control enable on =2.5 to 5.5vdc or open circuit off = 0 to 0.8vdc ref. to -vin. ttl compatible input current (enable off) <10ma output trim single output models thermal shutdown 110c baseplate temperature (typ) auto reset isolation i/o isolation 1500vdc isolation resistance 15 x 108 ohms environmental total power: 25 watts input voltages: 24v or 48v no. of outputs: single, dual, triple operation case temperature range: -40c to +100c storage temperature: -40c to +125c humidity: 5% to 100% safety ul ul1950 can can22.2-950 tuv en60950 astec conventional power
e e u u r r o o p p e e astec house, waterfront business park merry hill, dudley west midlands, dy5 1lx, uk telephone: 44 (1384) 842-211 facsimile: 44 (1384) 843-355 a a m m e e r r i i c c a a s s 5810 van allen way carlsbad, ca 92008 telephone: 760-930-4600 facsimile: 760-930-0698 71 ordering information www.astec.com 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 1 output 2 output 3 output model number vdc voltage voltage voltage power 18-36 12v @ 2.08a 25w aa25n-024l-120s 18-36 15v @ 0.83a -15v @ 0.83a 25w aa25n-024l-150d 36-75 3.3v @ 6a 19.8w AA25N-048L-033S 36-75 5v @ 5a 25w aa25n-048l-050s 36-75 5v @ 5a 3.3v @ 6a 25w aa25n-048l-050d033 36-75 5v @ 2.5a 12v @ 0.52a -12v @ 0.52a 25w aa25n-048l-050t120 notes: max output power not to exceed 25w total. the sum of output currents not to exceed 6 amps. any output loading ratio within the maximum specified limits is possible. single output 1. +vin 2. -vin 3. no pin 4. enable 5. no pin 6. v1 out 7. comm 8. trim triple output 1. +vin 2. -vin 3. no pin 4. enable 5. v2 out 6. v1 out 7. comm 8. v3 out dual output 1. +vin 2. -vin 3. no pin 4. enable 5. v1 out 6. comm 7. v2 out 8. n/c notes: 1. 20 mhz bandwidth. an external 2.2mf ceramic capacitor is recommended to be placed from +v out to -v out. 2. 12v and 24v input models require external capacitor connected between +v in and -v in to meet fcc class a and ets300-386-1 requirements for conducted noise. consult factory for filtering information to meet fcc class b , vde or eic specifications. 3. all specifications are typical at nominal line, full load, and 25 c unless otherwise noted. 4. all specifications subject to change without notice. mechanical drawings are for reference only. 5. please refer to the technical reference notes for more information. 6. balanced loads on dual and aux output voltage. 7. warranty: 1 yr case material: metal base/cover weight: 2.5 oz / 68gr. pin assignments aa25n astec conventional power 2.0 (50.8) .10 (2.54) .90 (22.86) .40 (10.16) 2.00 (50.8) 1.80 (45.72) 1 2 4 6 7 8 .040 (1.01) dia. typ. .20 (5.0) min. .52 (13.2) 3 5 .015 (.38) min. .40 (10.16) 2.00 (50.8) .40 (10.16) .40 (10.16) .40 (10.16)
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