Application notes LD2980
16/22 DocID6280 Rev 18
and below the specified thresholds listed in the electrical characteristics section under V
IH
V
IL
. Any slew rate can be used to drive the inhibit.
7.6 Reverse current
The power transistor used in the LD2980 has not an inherent diode connected between the
regulator input and output. If the output is forced above the input, no current will flow from
the output to the input across the series pass transistor. When a V
REV
voltage is applied on
the output, the reverse current measured, according to the test circuit in Figure 22, flows to
the GND across the two feedback resistors. This current typical value is 160 μA. R
1
and R
2
resistors are implanted type; typical values are, respectively, 42.6 kΩ and 51.150 kΩ.
Figure 22. Reverse current test circuit
