LTC4090
3
9.
Test of the H VIN input overvoltage protection: In-
crease the H VIN input voltage slow ly and note that
as the voltage exceeds 38V… 45V the input current
w ill drop to zero indicating that the buck regulator
shut dow n due to overvoltage. The System Load is
now pow ered from the battery (and from U SB if
available). Decrease the H VIN voltage and observe
that the buckregulator w ill resume normal operation.
10.
Increase the battery voltage and note that the
charge current falls to zero w hen the voltage ex-
ceeds 4.167V… 4.215V.
Figure 1. Proper M easurement Equipment Setup
Содержание DC1210A
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