Specifications

CS CS
CS
CS out
V V K
R
I I
u
5 mA
0 A
dK/K = ±80%
25 mA dK/K = ±10%
50 mA dK/K = ±7%
100 mA dK/K = ±5%
1 A dK/K = ±3%
4 A
TPS1H100-Q1
www.ti.com SLVSCM2A –OCTOBER 2014–REVISED JANUARY 2014
Feature Description (continued)
Figure 29. Current Sense Accuracy
Ensure the CS voltage is in the linear region (0 to 4 V) during normal operation. Calculate the R
CS
with
Equation 1.
(1)
Also, when a fault condition happens, CS works as a diagnostics report pin. When open load/short to battery
happens in the on-state, V
CS
almost equals 0. When current limit, thermal shutdown/swing, open load/short to
battery in the off-state happens, the voltage is pulled up to V
CS,h
. Figure 30 shows a typical current sense voltage
according to the operating conditions, including fault conditions.
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