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TPS51220ARTVR Datasheet(PDF) 5 Page - Texas Instruments |
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TPS51220ARTVR Datasheet(HTML) 5 Page - Texas Instruments |
5 / 51 page TPS51220A www.ti.com SLUS897E – DECEMBER 2008 – REVISED JANUARY 2013 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, VEN = 3.3 V, VVIN = 12 V, VV5SW = 5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOLTAGE TRANSCONDUCTANCE AMPLIFIER gMv Gain TA = 25°C 500 μS VID Differential Input Voltage Range –30 30 mV TA = 0 to 85°C 27 33 μA ICOMPSINK COMP Maximum Sink Current COMPx = 1.8 V TA = –40 to 85°C 22 33 μA ICOMPSRC COMP Maximum Source Current COMPx = 1.8 V –33 –43 μA VCOMP COMP Clamp Voltage 2.18 2.22 2.26 V VCOMPN COMP Negative Clamp Voltage 1.73 1.77 1.81 V CURRENT AMPLIFIER TRIP = 0V/2V, CSNx = 5V, TA = 25°C (2) 3.333 GC Gain TRIP = 3.3V/5V, CSNx = 5V, TA = 25°C (2) 1.667 VIC Common mode Input Voltage Range 0 13 V VID Differential Input Voltage Range TA = 25°C –75 75 mV POWERGOOD PG in from lower 92.5% 95% 97.5% VTHPG PG threshold PG in from higher 102.5% 105% 107.5% PG hysteresis 5% IPG PG sink current PGOOD = 0.5 V 5 mA IPG(LK) PG leak current PGOOD = 5 V 0 1 µA tPGDLY PGOOD delay Delay for PG in 0.8 1.0 1.2 ms SOFTSTART tSSDYL Soft Start Delay Delay for Soft Start, ENx = Hi to SS-ramp starts 200 μs tSS Soft Start Time Internal Soft Start 960 μs FREQUENCY AND DUTY CONTROL fSW Switching Frequency RF = 330 kΩ 273 303 333 kHz Lo to Hi 0.7 1.3 2 V VTHRF RF Threshold Hysteresis 0.2 V fSYNC Sync Input Frequency Range(2) 200 1000 kHz V(DRVH) = 90% to 10%, No Load, CCM/ OOA (2) 120 ns tON(min) Minimum On Time V(DRVH) = 90% to 10%, No Load, Auto-skip 160 250 ns tOFF(min) Minimum Off Time V(DRVH) = 10% to 90%, No Load 290 400 ns DRVH-off to DRVL-on 10 30 50 ns tD Dead time DRVL-off to DRVH-on 30 40 70 ns VDTH DRVH-off threshold DRVH to GND (2) 1 V VDTL DRVL-off threshold DRVL to GND(2) 1 V (2) Specified by design. Not production tested. Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links :TPS51220A |
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