Total Power:100W(5V,12V);62.5W(2.5V);82.5W(3.3V) Astec Industry Standard 25 Amps,20 Amps,8.33 Amps Input Voltage :48V No.of Outputs:Single output ALQ25 Series High Efficiency Quarter Brick Electrical Specs Input Input Range Input Surge Efficiency (Typ) 36 to 75 VDC 100V /100ms 90% (5V,12V); 88%(2.5V);89.5%(3V) Output Special Features • High efficiency(Typ) :90% (5V,12V); 88%(2.5V); 89.5%(3V) Voltage Tolerance (line, load, temp) Ripple&Noise Transient Response Load change 25% of Io max from 50%Io max ,<200mv,<400µs (di/dt =1A/µs,output cap = 1000µF aluminium electrolyte) Overvoltage Protection (Hiccup) 6V to 7.5V (5V) 3V to 3.8V(2.5V) 3.9V to 5V(3.3V) 14.4V to 18V(12V) Current Limit(Hiccup) >22A (5V) >9.2A(12V) >27A(2.5V,3.3V) • -40°C to +70°C Ambient Air Operation • Industry standard package 2.28" x 1.45" x 0.5"(baseplated) 2.28" x1.45"x 0.4"(open frame) <1.9% 120mV Max. • High capacitive load limit on start-up • Basic insulation • Regulation to zero load Environmental Ambient air operating temperature range: -40°C to +70°C Overtemperature protection: 115°C typ MTBF: > 2 million hours Overtemperature Protection Auto-recovery Switching Frequency 300k Control Trim range(%) 80 to 110 Enable Positive & negative enable options Safety Thermal Derating UL,CSA,EN The module can deliver up to full power at 55°C ambient, Vin: 48V,with 200LFM forced air(output to input). 1 North America (USA): 1-888-41-ASTEC Europe(UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662 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 ALQ25 Series AMERICAS Ordering Information Input Voltage Output Voltage Output Current Efficiency Model Number 48V 5V 20A 90% Typ ALQ20A48N,AEQ20A48N 48V 2.5V 25A 88% Typ ALQ25G48N,AEQ25G48N 48V 3.3V 25A 89.5% Typ ALQ25F48N,AEQ25F48N 48V 12V 8.33A 90% Typ ALQ08B48N,AEQ08B48N NOTES: “N” = Negative logic enable (without “N” = Positive logic enable) Pin Assignments Single Output 1. +Vin 2. Enable (On/Off) 3. -Vin 4. + Output 5. +Sense 6. Trim 7. -Sense 8.-Output Open frame Open frame Baseplated (for 12V) Baseplated (for 2.5V, 3.3V and 5V) Device code suffix -4 -6 -8 None Tolerance: X.Xmm ! 0.5mm; X.XXmm ! 0.25mm Length 4.8mm ! 0.5mm 3.8mm ! 0.5mm 2.8mm ! 0.25mm 5.8mm ! 0.5mm Notes: 1. All specifications subject to change without notice. Mechanical drawings are for reference only. 2. Technical Reference Notes should be consulted for detailed information when available. REV 1: Auguest 2005 2 www.astecpower.com