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L4976D013TR Datasheet(PDF) 7 Page - STMicroelectronics |
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L4976D013TR Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 17 page  L4976 Electrical characteristics 7/17 Symbol Parameter Test condition Min Typ Max Unit DC Characteristics Iqop Total operating quiescent current 4 6 mA Iq Quiescent current Duty Cycle = 0; VFB = 3.8V 2.5 3.5 mA Error Amplifier VFB Voltage feedback input 3.33 3.36 3.39 V RL Line regulation VCC = 8 to 55V 510 mV Ref. voltage stability vs temperature (1) 0.4 mV/° C VoH High level output voltage VFB = 2.5V 10.3 V VoL Low level output voltage VFB = 3.8V 0.65 V IO source Source output current Vcomp = 6V; VFB = 2.5V 180 220 µA IO sink Sink output current Vcomp = 6V; VFB = 3.8V 200 300 µA Ib Source bias current 2 3 µA SVRR E/A Supply voltage ripple rejection Vcomp = Vfb; VCC = 8 to 55V 60 80 dB DC open loop gain RL = ∞ 50 57 dB gm Transconductance Icomp = -0.1 to 0.1mA Vcomp = 6V 2.5 ms Oscillator section Ramp valley 0.78 0.85 0.92 V Ramp peak VCC = 8V 22.15 2.3 V VCC = 55V 9 9.6 10.2 V Maximum duty cycle 95 97 % Maximum frequency Duty cycle = 0% Rosc = 13kW, Cosc = 820pF 300 kHz 1. Specification refered to Tj from 0 to 125°C Table 5. Electrical characteristics (continued) (TJ = 25°C, COSC = 2.7nF, ROSC = 20kΩ, VCC = 24V, unless otherwise specified.) |
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