FP0100_10 Datasheet, PDF (3/6 Pages) Supertex, Inc – Fault Protection Switch with Current Fold-back

Figure 1. Typical I-V Characteristics
I_PEAK
90% I_PEAK
I_IN
I_OFF
V_IN - V_OUT
V_TRIP V_OFF
Figure 2. Test Circuit for I_PEAK vs R_SEN
I_PEAK
VIN
RSEN
+
V_IN
FP0100
-
VOUT
I_OFF = 300µA
100V
R_SEN
FP0100
The input peak current, I_PEAK, can be lowered by adding an
external resistor across the RSEN and VOUT pins as shown
in the test circuit in Figure 2. I_PEAK will decrease as the resis-
tor value of R_SEN increases. The typical I_PEAK vs R_SEN charac-
teristic is shown in Figure 3.
Figure 3. Typical I_PEAK vs R_SEN Characteristic
1000.0
I_PEAK vs R_SEN
100.0
10.0
1.0
0.1
1.0
10.0
100.0
1000.0
10000.0
R_SEN (Ω)
Doc.# DSFP-FP0100
C070113
Supertex inc.
3
www.supertex.com