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UCC28780RTER Datasheet(PDF) 9 Page - Texas Instruments |
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UCC28780RTER Datasheet(HTML) 9 Page - Texas Instruments |
9 / 49 page 9 UCC28780 www.ti.com SLUSD12 – OCTOBER 2017 Product Folder Links: UCC28780 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Electrical Characteristics (continued) Over operating free-air temperature range, VVDD = 15V, RRDM = 115 kΩ, RRTZ = 140 kΩ, VBUR= 1.2 V, VSET = 0 V, RNTC = 50 k Ω, VVS = 4 V, VSWS = 0 V, IFB = 0 μA, IHVG = 25 μA, and -40 ⁰C < TJ = TA < 125 ⁰C (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNIT SWS INPUT VTH(SWS) SWS zero voltage threshold VSET = 5 V 9 V VSET = 0 V 4 V tD(SWS- PWML) Time between SWS low to PWML high VSWS step from 5 V to 0 V 10 ns FB INPUT IFB(SBP) Maximum control FB current IFB increasing 68 95 µA VFB(REG) Regulated FB voltage level IFB = 0 A 4 V RFB FB input resistance 5 k Ω REF OUTPUT VREF REF voltage level IREF = 0 A 4.9 5 5.1 V IS(REF) Short current of REF pin Short REF pin 9 mA VR(LINE) Line regulation of VREF VVDD = 12 V to 35 V 0 mV VR(LOAD) Load regulation of VREF IREF = 0 mA to 1 mA, change in VREF 0 mV HVG OUTPUT VHVG HVG voltage level IHVG= +/-200 μA 9.8 11 12 V ISE(HVG) HVG max sink current during startup VHVG = 13 V 80 µA IS(HVG) Short current of HVG pin Short HVG pin 0.6 mA VHR(LINE) Line regulation of VHVG VVDD =12 V to 35 V 0 mV RDM INPUT tDM(max) Maximum PWMH width with maximum tuning 6.76 µs tDM(min) Minimum PWMH width with minimum tuning 3.52 µs |
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