Total Power: 60W Input Voltages: 48 25 Amps No. of Outputs: Single ALD25 Electrical Specs Input Input Range 36 to 75 VDC Input Surge 100V /100ms Efficiency 88%@1.8V (Typical) Output Line Regulation ±0.1%V O Load Regulation ±0.1%V O 1 Noise/Ripple 35mV Typ Remote sense Up to 10% of Vo Transient Response 3%Vo (typ) deviation 50% to 75% Load change S Special Features pecial Features 80µs settling time (typ) Overvoltage Protection 125% V typ (autorecovery) • High Efficiency O • -40°C to +85°C Ambient Air Operation Over Current protection 115% I typ (autorecovery) O • 1.30” x 0.9" x 0.35" TH or SMT package Over Temperature 115ºC average PCB temperature • High capacitive load limit on start-up Protection (autorecovery) • Industry standard feature sets: UVLO, OVP, Switching Frequency Fixed Frequency OCP, OTP, On/Off Enable, Remote Sense, Output Trim Isolation Voltage 1500 Vdc • Basic Insulation • Regulation to zero load Control • Fixed frequency switching Voltage Adjust 90 to 110% Vo • EU Directive 2002/95/EC compliant for RoHS Enable TTL compatible (Positive or Negative enable options) Environmental Ambient air operating temperature range: -40°C to +85°C Storage temperature: -40°C to +125°C Overtemperature protection: 115°C PCB temperature (Typical) MTBF: > 1 million hours Safety UL,cUL 60950-1 TUV EN60950-1 1 North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211Asia (HK): 852-2437-9662 Astec Industry Standard ALD25 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 Fwai 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 Output Output Efficiency Model Number Voltage Voltage Current 36V to 75V 5.0V 12A 91% Typ ALD12A48(N) - (6)(S)(L) 36V to 75V 3.3V 18A 90% Typ ALD18F48(N) - (6)(S)(L) 36V to 75V 2.5V 20A 89% Typ ALD20G48(N)- (6)(S)(L) 36V to 75V 1.8V 25A 88% Typ ALD25Y48(N) - (6)(S)(L) 36V to 75V 1.5V 25A 85% Typ ALD25M48(N)- (6)(S)(L) 36V to 75V 1.2V 25A 83% Typ ALD25K48(N) - (6)(S)(L) NOTES: o Efficiency values taken at nominal input full load condition, 25 C ambient temperature. OPTIONS (N) : "N" = designates Negatve 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) (S) : “-S” = Surface Mount Termination (default is thru hole termination with no sufix “-S required) (L) : “L” = RoHS compliant (RoHS 6) / “Blank” - RoHS compliant with Lead (PB) in solder exemption (RoHS 5) TH Termination 1.30 Pin Assignments [33.0] Pin 1 Pin 8 Single Output 0.90 [22.9] 1. + Vin PIN LENGTH A 2. Enable 0.35 3. - Vin 0.19 Std Pin Length: 0.189 [4.8] MIN [8.8] PIN SIDE DOWN [4.8] 0.205 [5.2] MAX 4. - Vout 0.22 “-6” Option: 0.137 [3.5] MIN See A 5. - Sense [5.5] 0.152 [3.9] MAX 6. Trim 0.03 7. + Sense [0.8] 8. +Vout 1.10 [1.57Ø] (2 0.04Ø [1.0Ø](6X) 0.10 SIDE VI 0.EW 062 Ø 0.10 0.15 [27.9] [2.5] [2.5] [3.8] 0.15 [3.8] Notes: 0.30 1. Measured at 20MHz bandwidth with external 10 µF 0.15 0.45 [7.6] [3.8] 0.60 tant. capacitor in parallel with 0.1 µF ceramic [11.4] [15.2] 0.30 capacitor placed across +Vout and -Vout; 33µF e-cap [7.6] 0.60 or equivalent placed across +Vin and -Vin. [15.2] PIN SIDE UP 2. Efficiency measurements taken at full load, nominal PINSIDEUP line and T = 25 °C. SMT Termination A 1.30 [33.0] 3. All specifications are typical at nominal line, full load and T = 25 °C unless otherwise noted. A 4. Mechanical drawings are for reference only. 0.90 [22.9] Dimensions are in inches [millimeters]. Mechanical tolerance: ± 0.002[0.5], recommended surface mount pads: ∅ = 0.11[2.79] ± 0.005 [0.13]; through hole pin PIN SIDE DOWN diameter (Pins 4 & 8) ∅ = 0.062 [1.57], others ∅ = 0.06 [1.4] 0.04 [1.0] (6X). 5. Technical reference Notes should be consulted for detailed information when available. 0.15 [3.8] 1.10 [27.9] 0.15 [3.8] 0.15 [3.8] 6. All specifications subject to change without notice. 0.10 [2.5] 0.30 [7.6] 0.45 [11.4] 7. Warranty 1 yr. 0.60 [15.2] Astec reserves the right to make changes to the information 0.30 [7.6] contained herein without notice and assumes no liability as a result of its use or application. (REV08: MARCH 05, 2006) 0.30 [7.6] PIN SIDE UP www.astecpower.com 2