Astec Conventional Power W9959_02_DCDC_001-073_73 2/8/02 3:56 PM Page 70 25 Watts AA25N Total Power: Input Voltages: No. of Outputs: 25 Watts 24V or 48V Single, Dual, Triple Electrical Specs Input Input range Input capacitance Input reverse voltage protection Input surge voltage Input reflected ripple Undervoltage lockout Efficiency 18-36 Vdc (24 Vdc nominal) 36 - 75Vdc (48Vdc nominal) 2mF typical Fuse recommended 100V for 100mS (048L) 50V for 100mS (024L) 36V for 100mS (012L) <10mA (P-P) See Note 2 Vin<32V (-048L ONLY) 82% typical Output Voltage tolerance Special Features • Ideal for telecom/networking applications • High efficiency • Unencapsulated 2.0” x 2.0” x 0.50” package. • Integral heat spreader available • 100°C Baseplate temperature • Enable (on/off) • Thermal protection • 350kHz Switching frequency • Under voltage lockout Environmental Line regulation Load regulation Noise/ripple Short circuit protection Overvoltage protection Transient response Temperature coefficient Switching frequency Main Output ±1.0% Aux Output ±3.0% Dual Output ±2.0% Main Output ±0.1% Aux Output ±0.5% Dual Output ±0.2% Main Output ±0.75% Aux Output ±3.0% Dual Output ±0.5% (10% to 100% load) Note 6. 50mV P-P, Singles 100mVp-p, Dual , Triple Continuous power cycle 120% of V0, Typ 2% Vo typ; recovery <500msec typ (25% step load change to within 1%Vo) ±0.2%/°C 350kHz Control Operation case temperature range: -40°C to +100°C Storage temperature: -40°C to +125°C Humidity: 5% to 100% 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 110°C Baseplate temperature (typ) Auto reset Isolation Safety 70 UL UL1950 CAN CAN22.2-950 TUV EN60950 America’s (USA): 1-888-41-ASTEC I/O isolation Isolation resistance Europe (UK): 44 (1384) 842-211 1500Vdc 15 x 108 ohms Asia (HK): 852-2437-9662 W9959_02_DCDC_001-073_73 2/8/02 3:56 PM Page 71 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 AA25N Ordering Information Input VDC Output 1 Voltage Output 2 Voltage 18-36 18-36 12V @ 2.08A 15V @ 0.83A 36-75 36-75 36-75 36-75 3.3V @ 6A 5V @ 5A 5V @ 5A 5V @ 2.5A Output 3 Voltage Output Power Model Number -15V @ 0.83A 25W 25W AA25N-024L-120S AA25N-024L-150D 3.3V @ 6A 12V @ 0.52A 19.8W 25W 25W 25W AA25N-048L-033S AA25N-048L-050S AA25N-048L-050D033 AA25N-048L-050T120 -12V @ 0.52A 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. Pin Assignments Single Output Dual Output Triple Output 1. 2. 3. 4. 5. 6. 7. 8. 1. 2. 3. 4. 5. 6. 7. 8. 1. 2. 3. 4. 5. 6. 7. 8. +Vin -Vin No Pin Enable No Pin V1 Out Comm Trim +Vin -Vin No Pin Enable V1 Out Comm V2 Out N/C +Vin -Vin No Pin Enable V2 Out V1 Out Comm V3 Out .52 (13.2) .20 (5.0) MIN. .015 (.38) MIN. .040 (1.01) DIA. TYP. 2.0 (50.8) 1.80 (45.72) .10 (2.54) Notes: .40 (10.16) 5 .90 (22.86) 2.00 (50.8) .40 (10.16) 6 2.00 (50.8) .40 (10.16) 1 .40 (10.16) 2 7 3 .40 (10.16) 4 Astec Conventional Power 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 8 Case material: Metal base/cover Weight: 2.5 Oz / 68Gr. www.astec.com 71