LD2985 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'LD2985' PDF : 18 Pages View PDF
LD2985
Application notes
6.6
Reverse current
The power transistor used in the LD2985 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 VREV voltage is applied on
the output, the reverse current measured flows to the GND across the two feedback
resistors. This current typical value is 160 µA. R1 and R2 resistors are implanted type;
typical values are, respectively, 42.6 kΩ and 51.150 kΩ.
Figure 17. Reverse current test circuit
DocID8189 Rev 13
13/18
Share Link: 
