Total Power: 66 Watts Input Voltages: 19 - 60V 66Watts No. of Outputs: Single ALO20F36 Wide Range Input Electrical Specs Electrical Specs Input Input Range 19 to 60 VDC Input Surge 100V /100ms 2 Efficiency 91% @ 3.3V (typical) Output Line / Load Regulation < 0.1% V (typical) O Load Current Up to 20A 1 Noise/Ripple 50mV (typical) PK-PK Transient Response 3% typical deviation (50% to 75% Step Load) Special Features < 200µs settling time Special Features Over Voltage Protection 125% V Typ (autorecovery) O • 2.3” x 0.9” Industry Standard 8th brick outline Over Current Protection 125% I Typ (autorecovery) O,max • Wide Operating Input Voltage Range Over Temperature 115ºC average PCB temperature • Regulation to zero load Protection (autorecovery) • High Efficiency Switching Frequency 400KHz • Fixed Frequency Switching for EMI predictability • Industry Standard features: Input UVLO with Isolation Voltage 1500Vdc hysteresis, Enable, OVP, OCP, OTP, Output VoltageTrim, Differential Remote Sense Control • Meets Basic Insulation Output Voltage Trim ±10% V • EU Directive 2002/95/EC compliant for RoHS O,NOM Enable TTL compatible (Positive or Negative Logic) Environmental Operating Ambient Temperature Openframe: -40°C to +85°C Ambient Storage temperature: -55°C to +125°C MTBF: > 1 Million Hrs Safety UL, cUL 60950 Recognized TUV EN60950 Licensed 2 North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662 03.09.07 Astec Industry Standard ALO20F36 Astec Industry Standard EUROPE ASIA AMERICAS Astec House, Waterfront Business Park Units 2111-2116, Level 21 5810 Van Allen Way Merry Hill, Dudley Tower1, Metroplaza Carlsbad, CA 92008 West Midlands, DY5 1LX, UK 223, Hing Fong Road Telephone: 760-930-4600 Telephone: 44 (1384) 842-211 Kwai Fong, New Territories Facsimile: 760-930-0698 Facsimile: 44 (1384) 843-355 Hong Kong Telephone: 852-2437-9662 Facsimile: 852-2402-4426 Ordering Information 2 Input Voltage Output Voltage Output Current Efficiency Model Number 19V to 60V 3.3V 20A 91% ALO20F36(N) - (6)(L) OPTIONS: (N) : "N" = designates Negative 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) (L) : "L" = RoHS compliant (RoHS 6) / “Blank” = RoHS compliant with Lead (Pb) in solder exemption Pin Assignment Single Output 1. +Vin 2. Enable (On/Off) 3. -Vin 4. -V OUT 5. -Sense 6. Trim ALO - OPENFRAME 7. +Sense 8. +V 0.15 OUT PIN 3 PIN 4 2.00 [3.8] 0.30 [50.8] 0.15 [7.6] [3.8] Notes: 0.45 0.45 [11.4] 1. 20 MHz bandwidth. External 10 uF tant. capacitor in [11.4] 0.60 0.75 [15.2] parallel with 0.1 uF ceramic capacitor placed across 0.75 [19.0] [19.0] the output and secondary return ground. 2. Efficiency measurements are typical values taken at PIN 1 PIN 8 full load, 24V or 48V input and T = 25°C. A PIN SIDE UP 3. All specifications are typical at nominal line, full load and T = 25°C unless otherwise noted. A 0.32 4. All specifications subject to change without notice. [8.2] 5. Mechanical drawings are for reference only. Dimensions are in inches [mm]. Pin placement tolerance ± 0.005 [0.127]. Mechanical Tolerance ± See A 0.02 [0.5]. Through hole pin diameter (Pins 4 & 8) ∅ = 0.062 [1.57], others ∅ = 0.04 [1.0] (6X). 6. Technical Reference Notes should be consulted for detailed information when available. 7. Warranty 1yr. PIN LENGTH A Std Pin Length: 0.189 [4.8] MIN 0.205 [5.2] MAX “-6” Option: 0.137 [3.5] MIN This is a Preliminary Data Sheet. Astec reserves the right to 0.152 [3.9] MAX make changes to the information contained herein without notice and assumes no liability as a result of its use and application. (REV 03: MARCH 8, 2007) www.astecpower.com 3