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TPS53819ARGTT Datasheet(PDF) 4 Page - Texas Instruments |
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TPS53819ARGTT Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 43 page  TPS53819A SLUSB56 – NOVEMBER 2012 www.ti.com ELECTRICAL CHARACTERISTICS over operating free-air temperature range, VVREG= 5 V, VEN= 5 V (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNIT SUPPLY CURRENT TA = 25°C, no load, power conversion IVDD VDD bias current 920 μA enabled (no switching) TA = 25°C, no load, power conversion IVDDSTBY VDD standby current 610 μA disabled INTERNAL REFERENCE AND FEEDBACK REGULATION VOLTAGE VFB Feedback regulation voltage FB w/r/t GND, CCM condition 600 mV VFBTOL Feedback voltage tolerance FB w/r/t GND, 0°C ≤ TJ ≤ 85°C 597 600 603 mV FB w/r/t GND, 0°C ≤ TA ≤ 85°C, all settings VDACTOL1 DAC voltage tolerance 1 –4.8 4.8 mV with VOUT_ADJUSTMENT only FB w/r/t GND, 0°C ≤ TA ≤ 85°C, all settings VDACTOL2 DAC voltage tolerance 2 –4.8 4.8 mV with VOUT_MARGIN only FB w/r/t GND, 0°C ≤ TA ≤ 85°C, with VDACTOL3 DAC voltage tolerance 3 VOUT_ADJUSTMENT=0Dh and –4.8 4.8 mV VOUT_MARGIN=70h for +5% FB w/r/t GND, 0°C ≤ TA ≤ 85°C, with VDACTOL4 DAC voltage tolerance 4 VOUT_ADJUSTMENT=13h and –4.8 4.8 mV VOUT_MARGIN=07h for -5% VIOS_LPCMP Loop comparator input offset voltage VREF to VFB, TA = 25°C –2.5 2.5 mV IFB FB pin input current VFB = 600 mV –1 1 μA OUTPUT VOLTAGE IVODIS VO discharge current VVO = 0.5 V, power conversion disabled 10 12 mA FREQUENCY CONTROL VIN = 12 V, VVO = 3.3 V, FS <2:0> =000 275 VIN = 12 V, VVO = 3.3 V, FS <2:0> =001 325 VIN = 12 V, VVO = 3.3 V, FS <2:0> =010 425 VIN = 12 V, VVO = 3.3 V, FS <2:0> =011 525 fSW VO switching frequency kHz VIN = 12 V, VVO = 3.3 V, FS <2:0> =100 625 VIN = 12 V, VVO = 3.3 V, FS <2:0> =101 750 VIN = 12 V, VVO = 3.3 V, FS <2:0> =110 850 VIN = 12 V, VVO = 3.3 V, FS <2:0> =111 1000 tON(min) Minimum on-time(1) DRVH rising to falling 60 ns tOFF(min) Minimum off-time DRVH falling to rising 320 ns DRIVER Source, IDRVH = 50 mA 1.6 RDRVH DRVH resistance Sink, IDRVH = 50 mA 0.6 Ω Source, IDRVL = 50 mA 0.9 RDRVL DRVL resistance Sink, IDRVL = 50 mA 0.5 DRVH-off to DRVL-on 10 tDEAD Dead time ns DRVL-off to DRVH-on 20 INTERNAL BOOT STRAP SWITCH VF Forward voltage VVREG-VBST, TA = 25°C, IF = 10 mA 0.1 0.2 V IVBST VBST leakage current TA = 25°C, VVBST = 33 V, VSW = 28 V 0.01 1.5 μA ENABLE LOGIC THRESHOLD VL EN low-level voltage 0.5 V VH EN high-level voltage 1.8 V VHYST EN hysteresis voltage 0.22 V ILEAK EN input leakage current -1 0 1 μA (1) Specified by design. Not production tested. 4 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Links :TPS53819A |
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