north america (usa): 1-888-41-astec europe (uk): 44 (1384) 842-211asia (hk): 852-2437-9662 1 special features electrical specs special features 25 amps ? high efficiency ? -40c to +85c ambient air operation ? 1.30 x 0.9" x 0.35" th or smt package ? high capacitive load limit on start-up ? industry standard feature sets: uvlo, ovp, ocp, otp, on/off enable, remote sense, output trim ? basic insulation ? regulation to zero load ? fixed frequency switching ? eu directive 2002/95/ec compliant for rohs input input range 36 to 75 vdc input surge 100v /100ms efficiency 88%@1.8v (typical) output line regulation 0.1%v o load regulation 0.1%v o noise/ripple 1 35mv typ remote sense up to 10% of vo transient response 3%vo (typ) deviation 50% to 75% load change 80s settling time (typ) overvoltage protection 125% v o typ (autorecovery) over current protection 115% i o typ (autorecovery) over temperature 115oc average pcb temperature protection (autorecovery) switching frequency fixed frequency isolation voltage 1500 vdc control voltage adjust 90 to 110% vo enable ttl compatible (positive or negative enable options) ambient air operating temperature range: -40c to +85c storage temperature: -40c to +125c overtemperature protection: 115c pcb temperature (typical) mtbf: > 1 million hours ul,cul 60950-1 tuv en60950-1 environmental total power: 60w input voltages: 48 no. of outputs: single safety astec industry standard ald25
pi n si de dow n 0. 35 [ 8. 8] 1. 30 [ 33. 0] 0. 04? [ 1. 0? ] ( 6x) 0. 22 [ 5. 5] 0. 90 [ 22. 9] 0. 03 [ 0. 8] 0. 19 [ 4. 8] 0. 062 ? [ 1. 57? ] ( 2 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 2 ordering information www.astecpower.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 output efficiency 2 model number voltage voltage current 36v to 75v 5.0v 12a 91% typ ald12a48(n) - (6)(s)(l) 36v to 75v 3.3v 18a 90% typ ald18f48(n) - (6)(s)(l) 36v to 75v 2.5v 20a 89% typ ald20g48(n)- (6)(s)(l) 36v to 75v 1.8v 25a 88% typ ald25y48(n) - (6)(s)(l) 36v to 75v 1.5v 25a 85% typ ald25m48(n)- (6)(s)(l) 36v to 75v 1.2v 25a 83% typ ald25k48(n) - (6)(s)(l) notes: efficiency values taken at nominal input full load condition, 25 o c ambient temperature. options (n) : "n" = designates negatve logic enable (default is positive enable with no suffix n required) (6) : -6 = 3.7mm nominal pin length (default is 5mm nominal pin length with no suffix -6 required) (s) : -s = surface mount termination (default is thru hole termination with no sufix -s required) (l) : l = rohs compliant (rohs 6) / blank - rohs compliant with lead (pb) in solder exemption (rohs 5) pin assignments ald25 single output 1. + vin 2. enable 3. - vin 4. - vout 5. - sense 6. trim 7. + sense 8. +vout notes: 1. measured at 20mhz bandwidth with external 10 f tant. capacitor in parallel with 0.1 f ceramic capacitor placed across +vout and -vout; 33 f e-cap or equivalent placed across +vin and -vin. 2. efficiency measurements taken at full load, nominal line and t a = 25 c. 3. all specifications are typical at nominal line, full load and t a = 25 c unless otherwise noted. 4. mechanical drawings are for reference only. dimensions are in inches [millimeters]. mechanical tolerance: 0.002[0.5], recommended surface mount pads: ? = 0.11[2.79] 0.005 [0.13]; through hole pin diameter (pins 4 & 8) ? = 0.062 [1.57], others ? = 0.04 [1.0] (6x). 5. technical reference notes should be consulted for detailed information when available. 6. all specifications subject to change without notice. 7. warranty 1 yr. astec industry standard astec reserves the right to make changes to the information contained herein without notice and assumes no liability as a result of its use or application. (rev08: march 05, 2006) pin 1 pin 8 th t ermination 0. 60 [ 15. 2] 0. 30 [ 7. 6] 0. 15 [ 3. 8] 0. 10 [ 2. 5] si de vi ew pi nsi de up 0. 60 [ 15. 2] 0. 45 [ 11. 4] 0. 30 [ 7. 6] 0. 15 [ 3. 8] 0. 15 [ 3. 8] 1. 10 [ 27. 9] 0. 10 [ 2. 5] pi n si de up smt t ermination 0. 90 [ 22. 9] pi n si de dow n 1. 30 [ 33. 0] see a pin length a std pin length: 0.189 [4.8] min 0.205 [5.2] max -6 option: 0.137 [3.5] min 0.152 [3.9] max 0. 06 [ 1. 4] 0. 30 [ 7. 6] 0. 30 [ 7. 6] 0. 10 [ 2. 5] 0. 15 [ 3. 8] 0. 60 [ 15. 2] 0. 45 [ 11. 4] 0. 15 [ 3. 8] 0. 30 [ 7. 6] 0. 15 [ 3. 8] 1. 10 [ 27. 9] pi n si de up
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