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TPS2480 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS2480 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 54 page TPS2480 TPS2481 SLUS939A – APRIL 2010 – REVISED JUNE 2010 www.ti.com ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Supply Current (VCC) Enabled VEN = Hi VSENSE = VOUT = VVCC 450 1000 IVCC mA Disabled VEN = Lo VSENSE = VVCC = VOUT = 0 90 250 Quiescent current operating 0.7 1.0 mA IVS Quiescent current Power down mode 6 15 mA VPOR Power On reset threshold 2 V Current Sense Input (SENSE) ISENSE Input bias current VSENSE = VVCC VOUT = VVCC 7.5 20 mA Reference Voltage Output (VREF) VREF Reference voltage 0 < IVREF < 1 mA 3.9 4 4.1 V Power Limiting Input (PROG) Input bias current; device IPROG 0 < VPROG < 4 V VEN = 48 V 5 mA enabled; sourcing or sinking Pulldown resistance; device RPROG IPROG = 200 mA; VEN = 0 V 375 600 Ω disabled Power Limiting and Current Limiting (SENSE) Current sense threshold VPROG = 2.4 V; VOUT = 0 V or VPROG = 0.9 V; VOUT VCL V(VCC-SENSE) with power 17 25 33 = 30 V; VVCC = 48 V limiting trip mV Current sense threshold VSENSE V(VCC-sense) without power VPROG = 4 V; VSENSE = VOUT 45 50 55 limiting trip VPROG = 4 V; VOUT = VSENSE; V(VCC-SENSE): 0 Large overload response time tF_TRIP rising to 200 mV; C(GATE-OUT) = 2 nF; V(GATE-OUT) = 1.2 ms to GATE low 1 V Timer Operation (TIMER) VTIMER = 0 V 15.0 25.0 34.0 ISOURCE Charge current (sourcing) VTIMER = 0 V; TJ = 25°C 20.0 25.0 30.0 mA VTIMER = 5 V 1.50 2.5 3.70 ISINK Discharge current (sinking) VTIMER = 5 V; TJ = 25°C 2.10 2.5 3.10 TIMER upper threshold 3.9 4.0 4.1 voltage V TIMER lower reset threshold TPS2481 only 0.96 1.0 1.04 voltage DRETRY Fault retry duty cycle TPS2481 only 0.5% 0.75% 1.0% Gate Drive Output (GATE) IGATE GATE sourcing current VSENSE = VVCC; V(GATE-OUT) = 7 V; VEN = Hi 15 22 35 mA VEN = Lo; VGATE = VVCC 1.8 2.4 2.8 GATE sinking current mA VEN = Hi; VGATE = VVCC; V(VCC-SENSE)³ 200 mV 75 125 250 VGATE-OUT GATE output voltage 12 16 V Propagation delay: EN going VEN = 0 → 2.5 V, 50% of VEN to 50% of VGATE, tD_ON 25 40 true to GATE output high VOUT = VVCC, R(GATE-OUT) = 1 MOhm Propagation delay: EN going VEN = 2.5 V → 0 V, 50% of VEN to 50% of VGATE, tD_OFF false (0 V) to GATE output 0.5 1 ms VOUT = VVCC, R(GATE-OUT) = 1 MΩ, tFALL < 0.1 ms low Propagation delay: TIMER VTIMER: 0 → 5 V, tRISE < 0.1 ms. 50% of VTIMER to 0.8 1 expires to GATE output low 50% of VGATE, VOUT = VCC , R(GATE-OUT) = 1 MΩ, 4 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): TPS2480 TPS2481 |
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