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LM5176PWPR Datasheet(PDF) 7 Page - Texas Instruments |
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LM5176PWPR Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 37 page  7 LM5176 www.ti.com SNVSAI1 – JUNE 2017 Product Folder Links: LM5176 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Electrical Characteristics (continued) Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over the –40°C to 125°C junction temperature range unless otherwise stated. VIN = 24 V unless otherwise stated. (1) PARAMETER TEST CONDITION MIN TYP MAX UNIT DITHER IDITHER Dither source/sink current 11 µA VDITHER Dither high threshold 1.27 V Dither low threshold 1.16 SYNC VSYNC Sync input high threshold 2.1 V Sync input low threshold 1.2 PWSYNC Minimum sync input pulse width 50 ns CURRENT LIMIT VCS(BUCK) Buck current limit threshold (Valley) VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V 66 80 94 mV VCS(BOOST) Boost current limit threshold (Peak) VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V 100 120 140 IBIAS(CS/CSG) CS/CSG pin bias current VCS = VCSG = 0 V -80 µA IOFFSET(CS/CS G) CSG pin bias current VCS = VCSG = 0 V 19 CONSTANT CURRENT LOOP VSNS Average current loop regulation target VISNS(-) = 24 V, sweep ISNS(+), VSS = 0.8 V 43 50 57 mV ISNS ISNS(+)/ISNS(–) pin bias currents VISNS(+) = VISNS(–) = VIN = 24 V 3 µA Gm gm of soft-start pull down amplifier VISNS(+)–VISNS(–) = 55 mV, VSS = 0.5 V 1 mS SLOPE ISLOPE Buck adaptive slope current VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V 24 30 35 µA Boost adaptive slope current VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V 13 17 21 gmSLOPE Slope compensation amplifier gm 2 µS MODE IMODE Source current out of MODE pin 17 20 23 µA VCCM_HIC CCM with hiccup threshold 1.18 1.28 1.38 V VCCM CCM no hiccup threshold 2.22 2.4 2.6 V |
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