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IR3535 Datasheet(PDF) 8 Page - International Rectifier |
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IR3535 Datasheet(HTML) 8 Page - International Rectifier |
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8 / 17 page ![]() March 13, 2013 | FINAL DATASHEET 8 IR3535 Synchronous Buck Converter Driver PARAMETER CONDITIONS MIN TYP MAX UNIT Operating Bias Voltage 4.5 7 V Digital Input ― BBR# VIL Input Low Threshold 0.8 V VIH Input High Threshold 2.0 V Internal Pull Up Resistance VCC > UVLO 69 200 340 KΩ Internal Pull Up Voltage VCC > UVLO 3.3 V General VCC Supply Current 4 8 12 mA VIN Supply Curent 4.5 ≤ V(VIN) ≤ 14V 0.05 0.15 0.4 mA Switch Node Bias Current 5 mA BOOST Supply Current 4.75 ≤ V(BOOST) – V(SW) ≤ 7V 0.5 1.5 3 mA REFIN Bias Current ‐1.5 0 1 µA SW Floating Voltage CSIN‐ tied to SW, PWM Tri‐State 0.1 0.3 0.4 V Diode Emulation Mode Comparator Input Offset Voltage Note 2 ‐12 ‐3 3 mV Leading Edge Blanking Time V(GATEL) > 1V Starts Timer, Note 1 100 150 200 ns Propagation Delay Blanking Expired, +2.5mV overdrive to V(GATEL) < 1V, Note 1 41 50 ns Negative Current Time‐Out PWM = Tri‐State, V(SW) < = ‐10mV 20 30 45 µs VCC Under Voltage Lockout Start 3.3 3.7 4.1 V Stop 3 3.4 3.8 V Hysteresis 0.25 0.35 0.45 V Thermal Flag Rising Threshold PHSFLT# Drives Low. Note 1 115 °C Falling Threshold Note 1 95 °C Note: 1. Guaranteed by design but not tested in production 2. The Diode Emulation Mode (DEM) comparator measures the SW against PGND. The input offset is biased slightly to the negative so that a slightly positive current in the synchronous MOSFET is treated as zero current to accommodate propagation delays and untrimmed accuracy. |
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