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L5971D Datasheet(PDF) 4 Page - STMicroelectronics |
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L5971D Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 11 page Symbol Parameter Test Condition Min. Typ. Max. Unit DC Characteristics Iqop Total operating quiescent current Pin 5 (Pin 11) 3 4.5 mA Iq Quiescent current Duty Cycle = 0; VFB = 1.7V 2.8 3.5 mA Iqst-by Total stand-by quiescent current Vinh <0.9V 100 200 µA Vcc = 25V; Vinh <0.9V 150 300 µA Error Amplifier VFB Voltage Feedback Input 1.247 1.26 1.273 V RL Line regulation Vcc = 6.5 to 25V 5 10 mV Ref. voltage stability vs temperature * 0.4 mV/ °C VoH High level output voltage VFB = 0.8V 8.7 V VoL Low level output voltage VFB = 1.7V 0.65 V Io source Source output current Vcomp = 3V; VFB = 0.8V 180 250 µA Io sink Sink output current Vcomp = 3V; VFB = 1.7V 200 300 µA Ib Source bias current 2 3 µA SVRR E/A Supply voltage ripple rejection Vcomp =Vfb; Vcc = 6.5 to 25V 60 80 dB DC open loop gain RL = ∞ 50 57 dB gm Transconductance Icomp = -0.1 to 0.1mA Vcomp =6V 4.3 mS Oscillator Section Ramp Valley 0.74 0.81 0.88 V Ramp peak Vcc = 6.5V 1.80 1.87 1.94 V Vcc = 25V 4.72 4.79 4.86 V Maximum duty cycle 95 97 % Maximum Frequency Duty Cycle = 0% Rosc = 13k Ω,Cosc = 820pF 500 kHz ELECTRICAL CHARACTERISTICS (continued) L5971 4/11 |
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