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TPS51220RHBTG4 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS51220RHBTG4 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 43 page TPS51220 www.ti.com SLVS785C – OCTOBER 2007 – REVISED JULY 2009 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, EN = 3.3V, VIN = 12V, V5SW = 5V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT UVP, OVP AND UVLO V(OVP) OVP Trip Threshold OVP detect 110% 115% 120% t(OVPDLY) OVP Prop Delay 1.5 μs V(UVP) UVP Trip Threshold UVP detect 65% 70% 73% t(UVPDLY) UVP Delay 0.8 1 1.2 ms Wake up 1.7 1.8 1.9 V V(UVREF2) VREF2 UVLO Threshold Hysteresis 75 100 125 mV Wake up 3 3.1 3.2 V(UVREG3) VREG3 UVLO Threshold V Hysteresis 0.10 0.15 0.20 Wake up 4.1 4.2 4.3 V V(UVREG5) VREG5 UVLO Threshold Hysteresis 0.35 0.40 0.44 V INTERFACE AND LOGIC THRESHOLD Wake up 0.8 1 1.2 V(EN) EN Threshold V Hysteresis 0.1 0.2 0.3 Wake up 0.45 0.50 0.55 V(EN12) EN1/EN2 Threshold V Hysteresis 0.1 0.2 0.3 EN1/EN2 SS Start V(EN12SS) SS-ramp start threshold at external soft start 1 V Threshold EN1/EN2 SS End V(EN12SSEND) SS-End threshold at external soft start (3) 2 V Threshold I(EN12) EN1/EN2 Source Current VEN1/EN2 = 0V 1.5 2 2.6 μA Continuous 1.5 Auto Skip 1.9 2.1 SKIPSEL1/SKIPSEL2 V(SKIPSEL) V Setting Voltage OOA Skip (min 1/8 Fsw) 3.2 3.4 OOA Skip (min 1/16 Fsw) 3.8 V(OCL-ULV), Discharge ON 1.5 V(OCL-ULV), Discharge OFF 1.9 2.1 V(TRIP) TRIP Setting Voltage V V(OCL-LV), Discharge OFF 3.2 3.4 V(OCL-LV), Discharge ON 3.8 Current mode, OVP enable 1.5 D-CAP mode, OVP disable 1.9 2.1 V(FUNC) FUNC Setting Voltage V D-CAP mode, OVP enable 3.2 3.4 Current mode, OVP disable 3.8 TRIP = 0 V –1 1 I(TRIP) TRIP Input Current μA TRIP =5 V –1 1 SKIPSELx = 0 V –0.5 0.5 I(SKIPSEL) SKIPSEL Input Current μA SKIPSELx = 5 V –0.5 0.5 BOOT STRAP SW V(FBST) Forward Voltage VVREG5-VBST, IF = 10 mA, TA = 25°C 0.10 0.20 V I(BSTLK) VBST Leakage Current VBST = 30 V, SW = 25 V 0.01 1.5 μA THERMAL SHUTDOWN Shutdown temperature(3) 150 T(SDN) Thermal SDN Threshold °C Hysteresis(3) 10 (3) Specified by design. Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links :TPS51220 |
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