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FAN5250 数据表(PDF) 5 Page - Fairchild Semiconductor |
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FAN5250 数据表(HTML) 5 Page - Fairchild Semiconductor |
5 / 17 page FAN5250 REV. 1.1.6 3/12/03 5 Electrical Specifications (VCC = 5V, VIN = 5V–24V, and TA = recommended operating ambient temperature range using circuit of Figure 1, unless otherwise noted) Parameter Conditions Min. Typ. Max. Units Power Supplies VCC Current Operating, CL = 10pF 2.7 3.2 mA Shut-down (EN = 0) 6 30 µA VIN Current Operating 12 20 µA Shut-down (EN = 0) 1 µA UVLO Threshold Rising VCC 4.3 4.65 4.75 V Falling 4.1 4.35 4.45 V Regulator / Control Functions Output Voltage per Table 1. Output Voltage VID 0.6 1.75 V Initial Accuracy -1 1 % VID Static Load Regulation -2 2 % VID Error Amplifier Gain 86 dB Error Amplifier GBW 2.7 MHz Error Amplifier Slew Rate 1 V/µS ILIM Voltage RILIM = 30K Ω 0.89 0.91 V Over-voltage Threshold 1.9 1.95 2.0 V Over-voltage Protection Delay 1.6 3.2 µS Under-voltage Shutdown Disabled during VID code change 72 75 78 % VID Under-voltage Delay 1.2 1.6 µS EN, input threshold Logic LOW 1.2 V Logic HIGH 2 V Output Drivers HDRV Output Resistance Sourcing 3.8 5 Ω Sinking 1.6 3 Ω LDRV Output Resistance Sourcing 3.8 5 Ω Sinking 0.8 1.5 Ω Oscillator Frequency FREQ = HIGH 255 300 345 KHz FREQ = LOW 510 600 690 KHz Ramp Amplitude, pk-pk VIN = 16V 2 V Ramp Offset 0.5 V Ramp Gain Ramp amplitude VIN 125 mV/V Reference, DAC and Soft-Start VID input threshold Logic LOW 1.21 V Logic HIGH 1.62 V VID pull-up current to internal 2.5V reference 12 µA DAC output accuracy -1 1 % |
类似零件编号 - FAN5250 |
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类似说明 - FAN5250 |
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