Astec Conventional Power W9959_02_DCDC_001-073_73 2/8/02 3:56 PM Page 68 15 Watts AK42A Dual Total Power: Input Voltages: No. of Outputs: 15 Watts 48V, 24 VDC Dual Electrical Specs Input Input Range: 36 to 75 VDC for 48V 18 to 36 VDC for 24V Maximum Inrush Current Limit: Maximum External Capacitor to Limit Inrush Current to 1.0 A: Low Input Shutdown: Auto Recovery: Hysteresis: Special Features * 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 * Loadsharing on dual outputs Efficiency: Enable: Disable: 1.0 A Max. 4.0mF 34.0 +/- 2.0 V for 48V 17.0V +/- 1.0V for 24 V 37.0V +/- 2.0 V for 48V 18.5V +/- 1.0 V for 24V 3 V +/- 1 V for 48V 1.5V +/- 0.5V for 24V 85% Open Circuit or up to 0.5V max. 4V min., 75V max. Output Voltage Tolerance: 3% for single output 5% for dual output 75mV rms max. Noise/Ripple: Output Voltage Adjust Range: 10% for single output dual output non adjustable Output Voltage Protection Short Circuit Protection Switching Frequency: Self-limiting Clamp, 140% max. Continuous Auto Start 200kHz nominal Environmental Operating ambient temperature range: -40 to +75 C (no derating) Cooling method: Convection MTBF: 7.5 MHrs Storage temperature: -55 to +125 C Safety UL IEC CSA CB 68 1950 950 C22.2-9.50 52719-106 America's (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662 W9959_02_DCDC_001-073_73 2/8/02 3:56 PM Page 69 AMERICAS EUROPE ASIA 5810 Van Allen Way Carlsbad, CA 92008 Telephone: 760-930-4600 Facsimile: 760-930-0698 Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY5 1LX, UK Telephone: 44 (1384) 842-211 Facsimile: 44 (1384) 843-355 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 AK42A Ordering Information Input Voltage Output 1 Voltage Output 2 Voltage Maximum Power Model Number 2.5V 3.3V 2.5V 3.3V 13.2W/10W 15W/13.2W 13.2W/10W 15W/13.2W AK42A-024L-033D025SM AK42A-024L-050D033SM AK42A-048L-033D025SM AK42A-048L-050D033SM Dual Output- 15 Watts Total Output Power 18-36 18-36 36-75 36-75 3.3V 5V 3.3V 5V 3.18 (0.125) Pin Assignments 12.70 MAX (.500) 47.90 (1.886) 49.12 (1.934) Dual Output 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 m. 6. Warranty: 1 yr 50.8 (2.00) 35.43 (1.395 2.97 (0.117) 6.34 (0.250) 1 30 1.27 REF (0.050) 38.10 (1.500) 39.6 (1.56) 30.63 (1.206) 16 15 2.54 TYP (0.100 48.01 (1.890) 1.27 TYP (0.050) 2.54 TYP (0.100) NOTES: 1. All dimensions in mm and (inches) 2. 3.56 TYP (0.140) Maximum Weight: Dual Output: Basic Tolerances: .X 0.05 (0.02) .XX 0.25 (0.010) 30 grams Derating Curve (T Output Power/Max. Rated Output Power NC V out 1 V out 1 V out 1 V out 1 V out 2 V out 2 V out 2 V out 2 GND GND GND GND GND Reserved +V in +V in CAP CAP Inrush - consult TRN CAP Inrush - consult TRN CAP Inrush - consult TRN CAP Inrush - consult TRN CAP Inrush - consult TRN CAP Inrush - consult TRN CAP Inrush - consult TRN Reserved / NC Shutdown -V in -V in -V in ref Astec Conventional Power 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. <105C) 1.1 1 0.9 0.8 0.7 0.6 0.5 0.3 Free Convection (50LFM) 200LFM 0.2 400LFM 0.1 600LFM 0.4 0 20 30 40 50 60 70 80 90 100 110 Ambient Temperature (C) Tref between pins 26&27 www.astec.com 69