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TPS51120RHBR Datasheet(PDF) 5 Page - Texas Instruments |
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TPS51120RHBR Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 10 page  www.ti.com TPS51120 SLUS670A–JULY 2005–REVISED AUGUST 2005 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, VVIN =12V,VVREG5 =VV5FILT = 5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VREG3 VOLTAGE VVREG3 VREG3 Output Regulation Voltage IVREG3 =20mA, 6V<VIN <28V,TA=25°C 3.25 3.30 3.35 IVREG3 =1-50mA,6V<VIN <28V,TA=0to 85°C 3.21 3.37 V VVREG3T VREG3 Output Voltage Tolerance IVREG3 =1-100 mA ,6V<VIN <28V,TA=-40 to 3.16 3.39 85°C IVREG3 VREG3 Output Current TA =25°C, VREG3=3.14V (1) 170 mA Rising edge of VO2, VREG3 drops to VO2 voltage 2.85 3.10 V VREG3 Bootstrap Switch VLDO3SW Threshold Hysteresis 120 mV VREG3 Bootstrap Switch Resist- RLDO3SW 1.3 3.0 Ω ance VREG5 VOLTAGE VVREG5 VREG5 Output Regulation Voltage IVREG5 =20mA, 6V<VIN <28V,TA= 25°C 4.925 5.00 5.075 VVREG5T VREG5 Output Voltage Tolerance IVREG5 =1-50mA,6V<VIN <28V,TA=0to 85°C 4.89 5.11 V IVREG5 =1-100 mA ,6V<VIN <28V,TA=-40 to 4.80 5.15 85°C IVREG5 VREG5 Output Current TA =25°C, VREG5=4.75 V(1) 200 mA Rising edge of VO1, VREG5 drops to VO1 voltage 4.30 4.85 V VREG5 Bootstrap Switch VLDO5SW Threshold Hysteresis 140 mV VREG5 Bootstrap Switch Resist- RLDO5SW 1.3 3.0 Ω ance TRANSCONDUCTANCE AMPLIFIER Gm Gain TA =25°C 280 µS ICOMPSINK COMP Maximum Sink Current VFBx=1.05V, COMPx=1.28V 8 12 16 µA ICOMPSRC COMP Maximum Source Current VFBx=0.95V, COMPx=1.28V -15 -11 -7 VCOMPHI COMP High Clamp Voltage CSx=0V, VFBx=0.95V 1.26 1.34 1.42 V VCOMPLO COMP Low Clamp Voltage CSx=0V, VFBx=1.05V 1.08 1.12 1.20 OUTPUT DRIVER Source, VVBST-DRVH =1V 3.5 7 RDRVH DRVH resistance Sink, VDRVH-LL =1V 1.5 3 Ω Source, VVREG5-DRVL =1V 3.5 7 RDRVL DRVL resistance Sink, VDRVL-PGND =1V 1.5 3 DRVH-off to DRVL-on, TA=25°C20 TD Dead time ns DRVL-off to DRVH-on, TA=25°C30 60 VDTH DRVH-off threshold LL to GND(1) 2 V VDTL DRVL-off threshold DRVL to GND (1) 1.1 INTERNAL BST DIODE VFBST Forward Voltage VVREG5-VBST,IF = 10 mA, TA=25°C 0.7 0.8 0.9 V IRBST Reverse Current VBST = 34 V, VREG5=5V 0.1 1.0 µA IBST(LEAK) VBST Leakage current VBST=34V, LL=28V, EN3=EN5=EN1=EN2=0V 0.1 1.0 (1) Ensured by design. Not production tested. 5 |
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