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FAN5182 Folha de dados(PDF) 6 Page - Fairchild Semiconductor |
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FAN5182 Folha de dados(HTML) 6 Page - Fairchild Semiconductor |
6 / 19 page © 2005 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5182 • Rev. 1.1.3 6 Electrical Characteristics (Continued) VCC = 12V, FBRTN = GND, • indicates specifications over operating ambient temperature range. (2) Symbol Parameter Conditions Min. Typ. Max. Units Current-Limit Comparator VILIMIT(NM) Output Voltage: Normal Mode EN > 2.0V, RILIMIT = 250kΩ • 2.9 3.0 3.1 V VILIMIT(SD) Output Voltage: In Shutdown EN < 0.8V, IILIMIT = -100µA • 400 mV IILIMIT(NM) Output Current: Normal Mode EN > 2.0V, RILIMIT = 250kΩ 12 µA Maximum Output Current • 60 µA VCL Current Limit Threshold VCSREF - VCSCOMP , RILIMIT = 250kΩ 105 125 145 mV Current Limit Setting Ratio VCL/IILIMIT 10.4 mV/µA VDELAY(NM) Delay Normal Mode Voltage RDELAY = 250kΩ 2.9 3.0 3.1 V VDELAY(OC) Delay Over-Current Threshold RDELAY = 250kΩ 1.7 1.8 1.9 V tDELAY Latch-Off Delay Time (3) RDELAY = 250kΩ, CDELAY = 12nF 1.5 ms Soft-Start IDELAY(SS) Output Current, Soft-Start Mode During Start-up Delay < 2.4V • 15 20 25 µA tDELAY(SS) Soft-Start Delay Time (3) RDELAY = 250kΩ, CDELAY = 12nF 500 µs Enable Input VIL(EN) Input Low Voltage • 0.8 V VIH(EN) Input High Voltage • 2.0 V Input Hysteresis Voltage 100 mV IIN(EN) Input Current • -1 +1 µA Power-Good Comparator VPWRGD(UV) Under-Voltage Threshold Relative to FBRTN • 600 660 720 mV VPWRGD(OV) Over-Voltage Threshold Relative to FBRTN • 880 940 1000 mV VOL(PWRGD) Output Low Voltage IPWRGD(SINK) = 4mA • 225 400 mV Power-Good Delay Time 200 ns VCROWBAR Crowbar Trip Point Relative to FBRTN • 0.970 1.050 1.105 V Crowbar Reset Point Relative to FBRTN • 550 650 750 mV tCROWBAR Crowbar Delay Point (3) Over-voltage to PWM Going Low 400 ns PWM Outputs VOL(PWM) Output Low Voltage IPWM(SINK) = 400µA • 160 500 mV VOH(PWM) Output High Voltage IPWM(SOURCE) = -400µA • 4.0 5 V Supply DC Supply Current • 5 10 mA VUVLO UVLO Threshold Voltage VCC rising • 6.5 6.9 7.3 V UVLO Hysteresis • 0.7 0.9 1.1 V Notes: 2. Limits at operating temperature extremes are guaranteed by design, characterization, and statistical quality control. 3. Guaranteed by design, not tested in production. |
Nº de peça semelhante - FAN5182_08 |
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Descrição semelhante - FAN5182_08 |
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