ALH25 ASTEC | Alldatasheet
Document overview
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- PDF pages: 2
Technical content
100 Watts
- 100W Output loadsharing
- 48VDC Input
- Open Frame 2.3” x 2.4” x 0.50” pkg.
- -40 to 120°C board temperature
- Trim feature, both rails
- Industry standard pin-out
- Enable (on/off) (pos or neg logic)
- OC, OV, OT protection
- 5.0V/3.3V dual outputs Operating PCB temperature range: -40°C to +120°C Storage temperature: -55°C to +125°C Weight 80 grams UL UL 1950 Pending CAN22.2-950 Pending TUV EN60950Pending Input Input range 36 to 75 VDC (48Vdc Nom.) Efficiency 88% typical Input reverse Voltage protection Fuse recommended 3A.MB Input surge voltage 100V for 100mS Output Voltage tolerance ±1% Line regulation ±0.2% Load regulation ±0.5% Ripple/noise 200mV P-P Temperature coefficient +0.02%/°C (max) Transient response 3% Vo max recovery <500msec (50% to 75% step load change) Switching frequency 250 kHz typical Control Enable on =1.2Vdc Max (Neg Enable) off = 3Vdc Min (Neg Enable) Ref. to -Vin. TTL compatible Input current (enable off) <2ma. Output trim Both outputs ±10% minimum Isolation I/O isolation 1500 VDC Environmental Total Power: 100 Watts Input Voltages: 48V No. of Outputs: Dual Safety Astec Industry Standard America’s (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-966242 W9959_02_DCDC_001-073_73 2/8/02 3:38 PM Page 42
Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY5 1LX, UK Telephone: 44 (1384) 842-211 Facsimile: 44 (1384) 843-355 AMERICAS
5810 Van Allen Way
Carlsbad, CA 92008 Telephone: 760-930-4600 Facsimile: 760-930-0698
Ordering Information
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 Input Output 1 Output 2 Model Number Voltage Voltage Voltage 36 - 75VDC 5.0V @ 20A 3.3V @ 25A ALH25AF48 Note: Enable Function "N" = negative logic enable (without "N" = positive enable) 1. Maximum output power not to exceed 100W total for 5/3.3V version 20/25A). 2. Any output loading ratio within the maximum specified limits is possible. Dual Output 1. -Vin 2. Case 3. Control (on/off) 4. Vin+ 5. V2 6. Rtn (V2) 7. Trim (V2) 8. V1 9. Rtn (V1) 10. Trim (V1) Notes: 1. 20MHz bandwidth. An external 2.2mf ceramic capacitor is recommended to be placed from +V out to -V out. 2. Recommended External components below: C1 = 100uF/100V, C2=C4= metallic film .47uF/50V C3= C5 = Electrolytic 1000uF/10V, C6 = .01uF/1500V 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. Warranty: 1 yr Pin Assignments ALH25-DualAstec Industry Standard 43www.astec.com W9959_02_DCDC_001-073_73 2/8/02 3:38 PM Page 43