Datasheet

EN
TPS54160A
3
SS/TR
4
PWRGD
6
EN
TPS54160A
3
SS/TR
4
PWRGD
6
EN1,EN2
VOUT1
VOUT2
TPS54160 , TPS54160A
SLVSB56C –MAY 2012–REVISED FEBRUARY 2014 www.ti.com
Feature Description (continued)
Figure 35. Schematic for Ratiometric Start-Up Figure 36. Ratio-Metric Startup using Coupled
Using Coupled SS/TR Pins SS/TR pins
Figure 35 shows a method for ratio-metric start up sequence by connecting the SS/TR pins together. The
regulator outputs ramp up to reach regulation at the same time. When calculating the slow start time the pull up
current source must be doubled in Equation 6. Figure 36 shows the results of Figure 35.
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