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TPS2482 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS2482 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 56 page  TPS2482 TPS2483 SLUSAW1 A – DECEMBER 2012 – REVISED MARCH 2013 www.ti.com ELECTRICAL CHARACTERISTICS (Hotswap Section) Unless otherwise noted, minimum and maximum limits apply across the recommended operating junction temperature and voltage ranges, typical specifications are at TJ = 25°C, VVCC = 48 V, VPROG = 2 V, VTIMER = 0 V, all outputs unloaded. Voltages are with respect to GND and positive currents are into pins. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Hotswap Supply (VCC) Hotswap section enabled VEN = Hi, VSENSE = VVCC, VOUT = VVCC 450 1000 IVCC μA Hotswap section disabled VEN = Lo, VSENSE = VVCC, VOUT = 0 V 90 250 UVLO turn-on threshold VCC rising 8.4 8.8 V UVLO turn-off threshold VCC falling 7.2 8.3 UVLO threshold hysteresis 75 mV Current Sense Input (SENSE) ISENSE Input bias current VSENSE = VVCC, VOUT = VVCC 7.5 20 μA Reference Voltage Output (VREF) VVREF Reference voltage 0 mA < IVREF < 1 mA 3.9 4 4.1 V Power Limiting Input (PROG) Input bias current; device IPROG 0 V < VPROG < 4 V, VEN = 48 V 5 μA enabled; sourcing or sinking Pulldown resistance; device RPROG IPROG = 200 μA, VEN = 0 V 375 600 Ω disabled Power Limiting and Current Limiting (SENSE) Current-sense threshold [VPROG = 2.4 V and VOUT = 0 V] or VCL_PL V(VCC-SENSE), with power-limit 17 25 33 [VPROG = 0.9 V and VOUT = 30 V] active mV Current-sense threshold VCL V(VCC-SENSE), with power-limit VPROG = 4 V, VOUT = VSENSE 45 50 55 inactive Response time, from large VPROG = 4 V, VOUT = VSENSE, C(GATE-OUT) = 2 nF, tF_TRIP 1.2 μs overload to GATE low V(VCC-SENSE) = 0 V → 200 mV, V(GATE-OUT) = 1 V Timer Operation (TIMER) VTIMER = 0 V 15 25 34 ISOURCE Charge current (sourcing) VTIMER = 0 V, TJ = 25°C 20 25 30 μA VTIMER = 5 V 1.5 2.5 3.7 ISINK Discharge current (sinking) VTIMER = 5 V, TJ = 25°C 2.1 2.5 3.1 TIMER upper threshold VTMRHI 3.9 4.0 4.1 voltage V TIMER lower threshold VTMRLO TPS2483 only 0.96 1.0 1.04 voltage DRETRY Fault retry duty-cycle TPS2483 only 0.5% 0.75% 1% Gate Drive Output (GATE) IGATE GATE sourcing current VEN = Hi, VSENSE = VVCC, V(GATE-OUT) = 7 V 15 22 35 μA VEN = Lo, VGATE = VVCC 1.8 2.4 2.8 GATE sinking current mA VEN = Hi, VGATE = VVCC, V(VCC-SENSE) = 200 mV 75 125 250 VGATE-OUT GATE output voltage VGATE with respect to VOUT 12 16 V Propagation delay: EN going VEN = 0 V → 2.5 V (tRISE < 0.1 μs), 50% of VEN to tD_ON 25 40 true to GATE output high 50% of VGATE, VOUT = VVCC, R(GATE-OUT) = 1 MΩ Propagation delay: EN going VEN = 2.5 V → 0 V (tFALL < 0.1 μs), 50% of VEN to tD_OFF 0.5 1 false to GATE output low 50% of VGATE, VOUT = VVCC, R(GATE-OUT) = 1 MΩ μs VTIMER = 0 V → 5 V (tRISE < 0.1 μs), 50% of Propagation delay: TIMER VTIMER to 50% of VGATE, VOUT = VVCC, R(GATE-OUT) 0.8 1 expires to GATE output low = 1 M Ω 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: TPS2482 TPS2483 |
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