special features electrical specs 15 watts ak40a ? surface mount ? high power density 15w/cu. in. ? full power capability without external heat sink ? input differential and common mode filtering ? hot insertable with inrush current limit ? ability to limit inrush current in an external input capacitor ? input undervoltage lockout with hysteresis ? output overvoltage protection ? remote shutdown operating ambient temperature range: -40 to +75 c (no derating) cooling method: convection mtbf: 7.5 mhrs storage temperature: -55 to +125 c ul 1950 iec 950 csa c22.2-9.50 cb 52719-106 input input range: 36 to 75 vdc for 48v 18 to 36 vdc for 24v maximum inrush current limit: 1.0 a max. maximum external capacitor to limit inrush current to 1.0 a : 4.0mf low input shutdown: 34.0 +/- 2.0 v for 48v 17.0v +/- 1.0v for 24 v auto recovery: 37.0v +/- 2.0 v for 48v 18.5v +/- 1.0 v for 24v hysteresis: 3 v +/- 1 v for 48v 1.5v +/- 0.5v for 24v efficiency: 85% enable: open circuit or up to 0.5v max. disable: 4v min., 75v max. output voltage tolerance: +/- 3% for single output +/- 5% for dual output noise/ripple: 75mv rms max. output voltage adjust range: +/- 10% for single output dual output non adjustable output voltage protection self-limiting clamp, 140% max. short circuit protection continuous auto start switching frequency: 200khz nominal environmental total power: 15 watts input voltages: 24v, 48v no. of outputs: single safety astec conventional power americas (usa): 1-888-41-astec europe (uk): 44 (1384) 842-211 asia (hk): 852-2437-9662 66 w9959_02_dcdc_001-073_73 2/8/02 3:55 pm page 66
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 voltage output 1 maximum model number voltage power 18-36 1.5v @ 4a 6w ak40a-024l-015f04sm 18-36 1.8v @ 4a 7.2w ak40a-024l-018f04sm 18-36 2.1v @ 4a 8.2w ak40a-024l-021f04sm 18-36 2.5v @ 4a 12w ak40a-024l-025f04sm 18-36 3.3v @ 4a 13.2w ak40a-024l-033f04sm 18-36 5.0v @ 3a 15w ak40a-024l-050f03sm 18-36 12v @ 1.25a 15w ak40a-024l-120f01sm 36-75 1.5v @ 4a 6w ak40a-048l-015f04sm 36-75 1.8v @ 4a 7.2w ak40a-048l-018f04sm 36-75 2.1v @ 4a 8.2w ak40a-048l-021f04sm 36-75 2.5v @ 4a 12w ak40a-048l-025f04sm 36-75 3.3v @ 4a 13.2w ak40a-048l-033f04sm 36-75 5.0v @ 3a 15w ak40a-048l-050f03sm 36-75 12v @ 1.25a 15w ak40a-048l-120f01sm single output 1. +vout 2. +vout 3. +vout 4. +vout 5. -vout 6. -vout 7. -v out 8. -vout 9. reserved 10. adjust 11. reserved 12. reserved 13. reserved 14. reserved 15. reserved 16. reserved 17. +vin 18. shutdown 19. -vin 20. reserved notes: 1. all specifications are typical at nominal input and full load unless otherwise noted. 2. specification subject to change without notice. 3. mechanical drawings for reference only. 4. minimum load: 0.2 a (min 15%) 5. max. capacitive load: 330 mf 6. warranty: 1 yr dimensions: single output: 1"w x 2"l x 0.5"h maximum weight: single output: 20 grams pin assignments ak40a astec conventional power 67 www.astec.com w9959_02_dcdc_001-073_73 2/8/02 3:56 pm page 67
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