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ALD20A48N-S Datasheet(PDF) 4 Page - Astec America, Inc |
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ALD20A48N-S Datasheet(HTML) 4 Page - Astec America, Inc |
4 / 20 page Technical Reference Notes ALD12/18/20/25 Series (Single Output 16 th Brick) MODEL: ALD12/18/20/25 SERIES SHEET 4 OF 20 AUGUST 17, 2005 – REVISION C Electrical Specifications (continued) OUTPUT SPECIFICATIONS (continued) Parameter Device Symbol Min Typ Max Unit Turn-On Response Time 4 VIN = VIN-MIN to VIN-MAX All - - 2 5 ms Enable to Output Turn-ON Delay VIN = VIN-MIN to VIN-MAX IO = IO,MIN to IO,MAX All - - - 10 ms +VIN to Output Turn-On Delay Enable Pin: Active VIN = VIN-MIN to VIN-MAX IO = IO,MIN to IO,MAX All - - - 10 ms Switching Frequency All 2V5, 5V0 - 560 650 625 725 690 800 KHz Dynamic Response: CO = use Figure 2 test setup Peak Deviation for Load Step Change from IO = 50% to 75% of IO, Max : Settling Time to within 1% of output set point voltage – VO,SET: Peak Deviation for Load Step Change from IO = 50% to 25% of IO, Max : Settling Time to within 1% of output set point voltage – VO,SET: ∆I O/∆t All All All All - - - - - - - - - - 0.1 3 80 3 80 - 6 200 6 200 A/ µs % Vo µs % Vo µs Output Overshoot at Turn-on Passive Resistive Full Load Vo ≤ 1V8 Vo > 1V8 - - - - 0 0 5 4 %Vo Output Enable ON/OFF Enable Signal Slew Rate Negative Enable ("N" suffix) Enable Pin Voltage: Mod-ON Mod-OFF All N suffix - - - 0.01 -0.5 2.95 - - - - 1.2 20 V/ms V V Positive Enable (No suffix) Enable Pin voltage: Mod-ON Mod-OFF No suffix - - 2.95 -0.5 - - 20 1.2 V Output Voltage Remote Sensing All - - - 10 %VO Output Voltage Trim Range 5 All 90 110 %VO NOTES: 1. The converter is not internally fused; an external fuse must be used. 2. Refer to Figure 1 for the input reflected ripple test setup. 3. Refer to Figure 2 for the Output Ripple and Noise Test Measurement Setup. 4. Measure output rise time from 10%VO to 90%VO. 5. Refer to the output trim equations provided (Equations 1 and 2). |
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