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ERJ-3EKF3321V Datasheet(PDF) 8 Page - International Rectifier |
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ERJ-3EKF3321V Datasheet(HTML) 8 Page - International Rectifier |
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8 / 45 page  - 8 -P JANUARY 18, 2013 | DATA SHEET| Rev 3.4 8 IR3895 16A Highly Integrated SupIRBuck Single‐Input Voltage, Synchronous Buck Regulator PD‐97746 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Accuracy 0°C < Tj < 70°C ‐0.5 +0.5 % ‐40°C < Tj < 125°C, Note 3 ‐1.0 +1.0 Vref Margining Voltage Vref_marg 0.4 1.2 V Sink Current Isink_Vref Vref = 0.6V 12.7 16.0 19.3 µA Source Current Isrc_Vref Vref = 0.4V 12.7 16.0 19.3 Vref Comparator Threshold Vref_disable Vref pin connected externally 0.15 V Vref_enable 0.4 Soft Start/Stop Soft Start Ramp Rate Ramp (SS_start) 0.16 0.2 0.24 mV/µs Soft Start Ramp Rate Ramp (SS_stop) ‐0.24 ‐0.2 ‐0.16 S_Ctrl Threshold High 2.4 V Low 0.6 Power Good PGood Turn on Threshold VPG(on) Vsns Rising, 0.4V < Vref < 1.2V 85 90 95 % Vref Vsns Rising, Vref < 0.1V 85 90 95 % Vp PGood Lower Turn off Threshold VPG(lower) Vsns Falling, 0.4V < Vref < 1.2V 80 85 90 % Vref Vsns Falling, Vref < 0.1V 80 85 90 % Vp PGood Turn on Delay VPG(on)_Dly Vsns Rising, see VPG(on) 1.28 ms PGood Upper Turn off Threshold VPG(upper) Vsns Rising, 0.4V < Vref < 1.2V 115 120 125 % Vref Vsns Rising, Vref < 0.1V 115 120 125 % Vp PGood Comparator Delay VPG(comp)_ Dly Vsns < VPG(lower) or Vsns > VPG(upper) 1 2 3.5 µs PGood Voltage Low PG(voltage) IPgood = ‐5mA 0.5 V Tracker Comparator Upper Threshold VPG(tracker _upper) Vp Rising, Vref < 0.1V 0.4 V Tracker Comparator Lower Threshold VPG(tracker _lower) Vp Falling, Vref < 0.1V 0.3 Tracker Comparator Delay Tdelay(track er) Vp Rising, Vref < 0.1V,see VPG(tracker_upper) 1.28 ms Under‐Voltage Lockout Vcc‐Start Threshold VCC_UVLO_ Start Vcc Rising Trip Level 4.0 4.2 4.4 V Vcc‐Stop Threshold VCC_UVLO_ Stop Vcc Falling Trip Level 3.7 3.9 4.1 Enable‐Start‐Threshold Enable_UVL O_Start Supply ramping up 1.14 1.2 1.26 V |
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