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TPS51221 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS51221 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 40 page  ELECTRICAL CHARACTERISTICS TPS51221 www.ti.com............................................................................................................................................... SLVS786A – NOVEMBER 2007 – REVISED MARCH 2009 over operating free-air temperature range, EN=3.3V, VIN=12V, V5SW=5V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT VIN shutdown current, TA = 25°C, IVINSDN VIN shutdown current 7 15 µA No Load, EN = 0V, V5SW = 0 V VIN standby current, TA = 25°C, No Load, IVINSTBY1 VIN standby current 1 80 120 µA EN1=EN2=V5SW = 0 V Vbat standby current, TA = 25°C, No Load IVBATSTBY Vbat standby current 500 µA SKIPSEL2=2V, EN2=open, EN1=V5SW=0V(1) TRIP = 5 V 1.2 mA V5SW current, TA = 25°C, No Load, IV5SW V5SW supply current ENx=5V, VFBx=1.05 V TRIP = 0 V 1.4 mA VREF2 OUTPUT IVREF2 < ±10 µA, TA = 25°C 1.98 2.00 2.02 VVREF2 VREF2 output voltage V IVREF2 < ±100 µA, 4.5V < VIN < 25 V 1.97 2.00 2.03 VREG3 OUTPUT V5SW = 0 V, IVREG3 = 0 mA, TA = 25°C 3.279 3.313 3.347 VVREG3 VREG3 output voltage V V5SW = 0 V, 0 mA < IVREG3 <10 mA, 3.135 3.300 3.400 5.5 V <VIN<25 V IVREG3 VREG3 output current VREG3 = 3 V 10 15 20 mA VREG5 OUTPUT V5SW = 0 V, IVREG5 = 0 mA, TA = 25°C 4.99 5.04 5.09 V V5SW = 0 V, 0 mA < IVREG5 <100 mA, 4.90 5.03 5.15 VVREG5 VREG5 output voltage 6 V <VIN<25 V V5SW = 0 V, 0 mA < IVREG5 <100 mA, 4.50 5.03 5.15 V 5.5 V <VIN<25 V V5SW = 0 V, VREG5 = 4.5 V 100 150 200 IVREG5 VREG5 output current mA V5SW = 5 V, VREG5 = 4.5 V 200 300 400 Turning on 4.55 4.7 4.8 VTHV5SW Switchover threshold V Hysteresis 0.15 0.20 0.25 tdV5SW Switchover delay Turning on 7.7 ms RV5SW 5V SW On-resistance IVREG5 = 100 mA 0.5 Ω OUTPUT TA = 25°C, No Load 0.9925 1.000 1.0075 VFB regulation voltage VVFB V tolerance TA = –40°C to 85°C , No Load 0.990 1.000 1.010 IVFB VFB input current IVFB VFBx = 1.05 V, COMPx = 1.8 V, TA = 25°C –50 50 nA CSNx discharge RDischg ENx = 0 V, CSNx = 0.5 V, TA = 25°C 20 40 Ω resistance VOLTAGE TRANSCONDUCTANCE AMPLIFIER GmV Gain TA = 25°C 500 µS Differential input voltage Vind –30 30 mV range COMP maximum sink ICOMPSNK COMPx = 1.8 V 33 µA current COMP maximum source ICOMPSRC COMPx = 1.8 V –33 µA current (1) Specified by design. Detailed external condition follows the application circuit of Figure 51 Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): TPS51221 |
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