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TPS51640ARSLR Datasheet(PDF) 6 Page - Texas Instruments |
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TPS51640ARSLR Datasheet(HTML) 6 Page - Texas Instruments |
6 / 54 page TPS51640A, TPS59640, TPS59641 SLUSAQ2 – JANUARY 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over recommended free-air temperature range, VV5 = VV5DRV = 5.0 V; VV3R3 = 3.3 V; VxGFB = VPGND = VGND, VxVFB = VCORE (Unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TIMERS: SLEW RATE, ISLEW, ADDR, ON-TIME AND I/O TIMING VBOOT > 0 V, SLEWRATE = 12 mV/µs, no faults, tSTARTUP1 Start-up time time from VR_ON until the controller responds to 5 ms SVID commands SLEWRATE = 12mV/ µs, VR_ON goes ‘HI’, SLSTRTSTP xVFB slew soft-start / soft-stop 1.25 1.50 1.75 mV/ µs VR_ON goes ‘LO = ‘Soft-stop’ VSLEWA ≤ 0.30V (Also disables SVID CLK timer) 10.0 12.0 14.5 VSLEWA = 0.4 V 3.5 4.0 5.0 VSLEWA = 0.6 V 7.5 8.5 9.5 0.75 V ≤ VSLEWA ≤ 0.85 V 10.0 12.0 14.5 SLSET Slew rate setting VSLEWA = 1.0 V 16 mV/ µs VSLEWA = 1.2 V 20 VSLEWA = 1.4 V 23 VSLEWA = 1.6 V 26 VSLEWA ≥ 2.50 V 26 Time from xVFB out of +220 mV VDAC boundary tPGDDGLTO xPGOOD deglitch time 5 100 µs to xPGOOD low. Time from xVFB out of –315 mV VDAC boundary tPGDDGLTU xPGOOD deglitch time 150 500 µs to xPGOOD low. TPS51640A 270 327 375 RCF=20 kΩ, VBAT=12 V, VDAC=1.1 V TPS59640 (250 kHz) 265 327 380 TPS59641 TPS51640A 225 272 320 RCF=24 kΩ, VBAT=12 V, VDAC=1.1 V TPS59640 (300 kHz) 220 272 325 TPS59641 TPS51640A 185 235 280 RCF=30 kΩ, VBAT=12 V, VDAC=1.1 V TPS59640 (350 kHz) 180 235 285 TPS59641 TPS51640A 160 207 252 tTON_CPU CPU on-time RCF=39 kΩ, VBAT=12 V, VDAC=1.1 V ns TPS59640 (400 kHz) 155 207 262 TPS59641 TPS51640A 140 185 231 RCF=56 kΩ, VBAT=12 V, VDAC=1.1 V TPS59640 (450 kHz) 134 185 241 TPS59641 TPS51640A 120 167 212 RCF=75 kΩ, VBAT=12 V, VDAC=1.1 V TPS59640 (500 kHz) 115 167 217 TPS59641 RCF=100 kΩ, VBAT=12 V, VDAC=1.1 V (550 kHz) 109 152 198 RCF=150 kΩ, VBAT=12 V, VDAC=1.1 V (600 kHz) 105 140 177 6 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated |
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