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FAN5236 Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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FAN5236 Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 20 page FAN5236 PRODUCT SPECIFICATION REV. 1.1.9 7/12/04 5 Electrical Specifications Recommended operating conditions, unless otherwise noted. Parameter Conditions Min. Typ. Max. Units Power Supplies VCC Current LDRV, HDRV Open, VSEN forced above regulation point 2.2 3.0 mA Shut-down (EN=0) 30 µA VIN Current – Sinking VIN = 24V 10 30 µA VIN Current – Sourcing VIN = 0V –15 –30 µA VIN Current – Shut-down 1 µA UVLO Threshold Rising VCC 4.3 4.55 4.75 V Falling 4.1 4.25 4.45 V UVLO Hysteresis 300 mV Oscillator Frequency 255 300 345 KHz Ramp Amplitude, pk–pk VIN = 16V 2 V Ramp Amplitude, pk–pk VIN = 5V 1.25 V Ramp Offset 0.5 V Ramp / VIN Gain VIN ≥ 3V 125 mV/V Ramp / VIN Gain 1V < VIN < 3V 250 mV/V Reference and Soft Start Internal Reference Voltage 0.891 0.9 0.909 V Soft Start current (ISS) at start-up 5 µA Soft Start Complete Threshold 1.5 V PWM Converters Load Regulation IOUTX from 0 to 5A, VIN from 5 to 24V -2 +2 % VSEN Bias Current 50 80 120 nA VOUT pin input impedance 45 55 65 K Ω Under-voltage Shutdown as % of set point. 2 µS noise filter 70 75 80 % Over-voltage threshold as % of set point. 2 µS noise filter 115 120 125 % ISNS Over-Current threshold RILIM= 68.5KΩ see Figure 11. 112 140 168 µA Output Drivers HDRV Output Resistance Sourcing 12 15 Ω Sinking 2.4 4 Ω LDRV Output Resistance Sourcing 12 15 Ω Sinking 1.2 2 Ω PG (Power Good Output) and Control pins Lower Threshold as % of set point, 2 µS noise filter –86 –94 % Upper Threshold as % of set point, 2 µS noise filter 108 116 % PG Output Low IPG = 4mA 0.5 V Leakage Current VPULLUP = 5V 1 µA PG2/REF2OUT Voltage DDR = 1, 0 mA < IREF2OUT ≤10mA 99 1.01 % VREF2 |
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