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TPS51511 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS51511 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 30 page www.ti.com TPS51511 SLVS735A – FEBRUARY 2007 – REVISED APRIL 2007 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, V V5IN = 5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOSW OUTPUT TA = 25°C 740.2 750 759.8 VVSWFB VSWFB regulation voltage TA = 0 to 85°C (3) 738.7 750 761.3 mV TA = -40 to 85°C (3) 738.0 750 762.0 RVOSW Input impedance, VOSW 750 k Ω VSWFB = 0.78 V, COMP = open –0.04 µA IVSWFB Input current, VSWFB VSWFB = 0.78 V, COMP = 5 V –0.06 µA IVOSWDischg Discharge current, VOSW ENSW = 0 V, VOSW = 0.5 V 8 15 35 mA TRANSCONDUCTANCE AMPLIFIER gm Gain TA = 25°C 240 300 360 µS ENLDO=0 V, ENSW=5 V, VSWFB=0 V, VOSW=1.94 V, ICOMPSNK COMP maximum sink current 13 µA COMP=1.28 V ENLDO=0 V, ENSW=5 V, VSWFB=0 V, VOSW=1.66 V, ICOMPSRC COMP maximum source current –13 µA COMP=1.28 V VCOMPHI COMP high clamp voltage ENLDO=0 V, ENSW=5 V, VSWFB=0 V, CS=0 V, VOSW=1.66 V 1.31 1.34 1.37 V VCOMPLO COMP low clamp voltage ENLDO=0 V, ENSW=5 V, VSWFB=0V, CS=0 V, VOSW=1.94 V 1.18 1.21 1.24 V DUTY CONTROL TON Operation on time VIN = 12 V, VOSW = 1.8 V 400 ns TON0 Startup on time VIN = 12 V, VOSW = 0 V 125 ns TONMIN Minimum on time TA = 25°C 100 ns TOFFMIN Minimum off time TA = 25°C 350 ns OUTPUT DRIVERS Source, IDRVH = -100 mA 3 6 RDRVH DRVH resistance Ω Sink, IDRVH = 100 mA 0.9 3 Source, IDRVL = -100 mA 3 6 RDRVL DRVL resistance Ω Sink, IDRVL = 100 mA 0.9 3 DRVH-off to DRVL-on(3) 10 TD Dead time ns DRVL-off to DRVH-on(3) 30 INTERNAL BST DIODE VFBST Forward voltage VV5IN-VBST, IF = 10 mA, TA = 25°C 0.7 0.8 0.9 V VBST = 34 V, LL = 28 V, IVBSTLK VBST leakage current 0.1 1 µA VOSW = 1.87 V, TA = 25°C ZERO CURRNT COMPARATOR VZC Zero current comparator offset –10 0 10 mV (3) Ensured by design. Not production tested. 4 Submit Documentation Feedback |
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