north america (usa): 1-888-41-astec europe (uk): 44 (1384) 842-211 asia (hk): 852-2437-9662 1 special features electrical specs special features 25 amps ? high efficiency (88% typical) ? -40c to +85c ambient air operation ? industry standard package 0.8" x 2.3" x 0.34" ? high capacitive load limit on start-up ? on/off enable ? remote sense compensation ? basic insulation ? regulation to zero load ? fixed frequency switching input input range 18 to 36 vdc input surge 50v /100ms efficiency 88%@3.3v typ output line regulation 0.1% load regulation 10mv typ output voltage 1% setpoint noise/ripple 40mv typ remote sense up to 10% of vo transient response 5%vo (typ) deviation 50% to 75% load change 100s (typ) recovery time overvoltage protection 125% typ current limit 110% nominal output switching frequency 660khz typ control voltage adjust 90 to 110% vo enable ttl compatible (positive & 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 tuv en60950 environmental total power: 82w input voltages: 24v no. of outputs: single safety astec industry standard alo25 high efficiency 1/8 brick
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 model number voltage voltage current 18v to 36v 3.3v 25a 88% typ alo25f24(n) - (6) (s) notes: efficiency values taken at nominal input full load condition, 25 o c ambient temperature. options "n" = negative logic enable (without "n" = positive enable) ?s? = smt (default is th) ?6? = 3.7mm pin length option (default pin length is 5mm nominal) 2.30 [58.4] 2.00 [50.8] 0.15 [3.8] e - vin 0.70 [17.8] 0.40 [10.2] 0.10 [2.5] +vin +sense 0.80 [20.3] 0.70 [17.7] ?0.04 [?1.0](6x) 0.32 [8.1] pin side down pin side up -output -sense trim ?0.06 [?1.6](2x) 0.55 [14.0] 0.40 [10.1] 0.25 [6.3] 0.10 [2.5] +output 0.20 [5.0] nom. side view alo25f24 single output 1. + vin 2. enable 3. - vin 4. - vout 5. - sense 6. trim 7. + sense 8. output rtn notes: 1. 20 mhz bandwidth. external 10 uf tant. capacitor in parallel with 1 uf ceramic capacitor placed across the output and secondary return ground. 2. efficiency measurements are typical values taken at full load, nominal line and t a = 25c. 3. all specifications are typical at nominal line, full load and t a = 25c unless otherwise noted. 4. all specifications subject to change without notice. 5. mechanical drawings are for reference only. dimensions are in inches [mm]. pin placement tolerance 0.005 [0.127]. mechanical tolerance 0.02 [0.5], recommended surface mount pads (min: 0.080 x 0.112 [2.03 x 2.84] / max: 0092 x 0.124 [2.34 x 3.15]); through hole pin diameter (pins 4 & 8) ? = 0.062 [1.57], others ? = 0.04 [1.0] (6x). 6. safety approval for 3.3v version is available. 7. technical reference notes should be consulted for detailed information when available. 8. warranty 1yr. astec industry standard 0.80 [20.3] 2.30 [58.4] through hole surface mount 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. (rev02: march 7, 2005) 0.07 [1.7] 0.22 [5.5] 0.35 [8.9] 0.01 [0.4] pin side down pin side down pin side up side view 0.70 [17.8] 0.40 [10.2] 0.10 [2.5] 0.06 [1.4] 2.19 [55.7] 0.70 [17.8] 0.55 [14.0] 0.40 [10.2] 0.25 [6.3] 0.10 [2.5] pin side up side view pin assignments
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