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ERJ-3EKF4992V Datasheet(PDF) 7 Page - International Rectifier |
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ERJ-3EKF4992V Datasheet(HTML) 7 Page - International Rectifier |
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7 / 43 page  - 7 - August 08, 2012 |DATA SHEET | 3.4 7 IR3899 9A Highly Integrated SupIRBuck TM Single‐Input Voltage, Synchronous Buck Regulator PD‐97661 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Zero‐crossing Comparator Offset Vos_zc Note 4 ‐4 0 4 mV Oscillator Rt Voltage Vrt 1.0 V Frequency Range Fs Rt = 80.6K 270 300 330 kHz Rt = 39.2K 540 600 660 Rt = 15.0K 1350 1500 1650 Ramp Amplitude Vramp Vin = 7.0V, Vin slew rate max = 1V/µs, Note 4 1.05 Vp‐p Vin = 12V, Vin slew rate max = 1V/µs, Note 4 1.80 Vin = 21V, Vin slew rate max = 1V/µs, Note 4 3.15 Vcc=Vin = 5V, For external Vcc operation, Note 4 0.75 Ramp Offset Ramp(os) Note 4 0.16 V Min Pulse Width Tmin(ctrl) Note 4 60 ns Max Duty Cycle Dmax Fs = 300kHz, PVin = Vin = 12V 86 % Fixed Off Time Toff Note 4 200 250 ns Sync Frequency Range Fsync 270 1650 kHz Sync Pulse Duration Tsync 100 200 ns Sync Level Threshold High 3 V Low 0.6 Error Amplifier Input Offset Voltage Vos_Vref VFb – Vref, Vref = 0.5V ‐1.5 +1.5 % Vos_Vp VFb – Vp, Vp = 0.5V ‐1.5 +1.5 Input Bias Current IFb(E/A) ‐1 +1 µA Input Bias Current IVp(E/A) 0 +4 Sink Current Isink(E/A) 0.4 0.85 1.2 mA Source Current Isource(E/A) 4 7.5 11 mA Slew Rate SR Note 4 7 12 20 V/µs Gain‐Bandwidth Product GBWP Note 4 20 30 40 MHz DC Gain Gain Note 4 100 110 120 dB Maximum output Voltage Vmax(E/A) 1.7 2.0 2.3 V Minimum output Voltage Vmin(E/A) 100 mV Common Mode input Voltage 0 1.2 V Reference Voltage Feedback Voltage Vfb Vref and Vp pin floating 0.5 V Accuracy 0°C < Tj < +70°C ‐0.5 +0.5 % ‐40°C < Tj < +125°C, Note 3 ‐1.0 +1.0 |
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