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FAN5235 Scheda tecnica(PDF) 4 Page - Fairchild Semiconductor |
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FAN5235 Scheda tecnica(HTML) 4 Page - Fairchild Semiconductor |
4 / 15 page FAN5235 4 REV. 1.3.3 1/3/02 ELECTRICAL SPECIFICATIONS Operating Conditions Recommended Operating Conditions Unless Noted Refers to Block Diagrams Parameter Conditions Min. Typ. Max. Units Supply VIN Input Supply Voltage (DC loading only) Note 1 5.4 24 V Input Quiescent Current H/LSD Open 1.4 3 mA Stand-by 300 400 µA Shut-down <1 5 µA Input UVLO Threshold Rising Vbat 4.3 4.7 5.1 V hysteresis 500 mV 5V and 3.3V Main Regulators Output Voltage Precision 0.1 to 5.5A, 5.4 to 24V -2 +2 % Oscillator Frequency, fosc 255 300 345 kHz HSD On-Resistance, pull up 7 12 Ω HSD On Resistance pull down 4 10 Ω LSD On-Resistance, pull up 6 9 Ω LSD On Resistance pull down 5 8 Ω HSD On Output, VCPUMP-VGS I = 10µA 100 mV HSD Off Output, VGS I = 10µA 100 mV LSD On Output, V5V-Always-VGS I = 10µA 100 mV LSD Off Output, VGS I = 10µA 100 mV Ramp Amplitude, pk-pk VIN = 16V 2 V Ramp Offset 0.5 V Ramp Gain from VIN 125 mV/V Error Amplifier GBW 3 MHz Current Limit Threshold R2, R8 = 1K Ω 90 135 180 µA Over Voltage Threshold 2µs delay 110 115 120 %VO Under Voltage Threshold 2µs delay 70 75 80 %VO SDN/SS Full On Voltage Min. (End of Soft Start) 4.2 V SDN/SS Full Off Voltage Max. 800 mV Max Duty Cycle 94 % Min PWM Time 200 nsec VFB3.3 Input Leakage Current 40 55 70 µA 12V Regulator Output Voltage Precision V_5 =4.9 to 5.1V and Io=0 to 150mA -2 +2 % VFB12 2.472 V VFB12 Input Current Note 2 100 200 nA Oscillator Frequency (fosc/3) 85 100 115 kHz Gate Drive On-Resistance High or Low 6 12 Ω |
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