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42R05-3143-150 Datasheet(PDF) 5 Page - Texas Instruments |
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42R05-3143-150 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 20 page TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER SOES040 – OCTOBER 1997 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating junction temperature range, VCC = 17 V, RT = 3.9 kΩ, CT = 1 nF (unless otherwise noted) voltage reference/error amplifier PARAMETER TEST CONDITIONS MIN TYP MAX UNIT V f Reference voltage TA = 25°C, VO(COMP) = VI(FB) TIL5942 2.48 2.5 2.52 V Vref Reference voltage O(COMP) I(FB) II(LED) = 10 mA, See Figure 2 TIL5942A 2.49 2.5 2.51 V Vref(dev) Deviation of reference voltage over temperature TA = 25°C to 100°C, VO(COMP) = VI(FB) II(LED) = 10 mA, See Figure 2 25 mV Ratio of reference voltage change to change in input light-emitting-diode voltage ∆VI(LED) = 4 V to 37 V, II(LED) = 10 mA 1.1 2 mV/V II(FB) Feedback input current II(LED) = 10 mA, See Figure 4 R3 = 10 k Ω 1.5 3 µA Iref(dev) Deviation of reference input current over full temperature range II(LED) = 10 mA, TA = 25°C to 100°C R3 = 10 k Ω, See Figure 4 0.5 µA IDRV(min) Minimum drive current TA = 25°C, VO(COMP) = VI(FB) 0.4 1 mA II(off) Off-state input light-emitting diode current VI(LED) = 37 V, See Figure 5 VI(FB) = 0 0.18 0.5 µA Zka† Regulator output impedance VO(COMP) = VI(FB) IO(COMP) = 1 mA to 50 mA f ≤ 1 kHz 0.1 † This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology. LED PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VF Forward voltage TA = 25°C, VO(COMP) = VI(FB), II(LED) = 10 mA, See Figure 2 1.2 1.4 V IR LED reverse current VO = 6 V 10 µA PWM Section voltage reference PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Vref Reference voltage IO = 1 mA, TJ = 25°C 4.95 5 5.05 V Vref(line reg) Reference line regulation VCC = 11 V to 30 V 50 mV Vref(load reg) Reference load regulation IO = 0 mA to 20 mA 25 mV V f(t ) Reference temperature regulation TA = 25°C to 100°C –4 mV Vref(temp reg) Reference temperature regulation TA = 25°C to –40°C –4 mV oscillator PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fosc Frequency R = 3.9 k Ω, C = 1 nF 225 250 275 kHz t(off) Dead time, (minimum off time) 100 148 200 ns Minimum timing ramp voltage 0.5 V Peak timing ramp voltage 3.2 V DV ref DV I(LED) |
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