DPA422-426
IUV(U)
(Enabled)
IOV(U)
IREM(U)
(Enabled)
Output
MOSFET
Switching
Output
MOSFET
Switching
(Disabled)
(Disabled)
I
LIMIT (Default)
DCMAX (75%)
Current
Limit
Maximum
Duty Cycle
-21.5 µA
-25.5 µA
V
BG + VTP
131 µA
135 µA
VBG
47 µA
X Pin Voltage
L Pin Voltage
0
-250
-200
-150
-100
-50
0
50
100
150
200
250
X Pin Current (µA)
L Pin Current (µA)
Note: These ꢀgures provide idealized functional characteristics with typical performance values. Please refer to the
parametric table and typical performance characteristics sections of the data sheet for measured data.
PI-2778-080801
Figure 7. LINE-SENSE and EXTERNAL CURRENT LIMIT Pin Characteristics.
CONTROL (C)
DPA-Switch
230 ∝A
(Negative Current Sense - ON/OFF,
Current Limit Adjustment)
VBG + VT
EXTERNAL CURRENT LIMIT (X)
(Voltage Sense)
LINE-SENSE (L)
1 V
VBG
(Positive Current Sense - Under-Voltage,
Overvoltage, ON/OFF Maximum Duty
Cycle Reduction)
240 ∝A
PI-2765-061704
Figure 8. LINE-SENSE (L), and EXTERNAL CURRENT LIMIT (X) Pin Input Simplified Schematic
10
Rev. T 12/12
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