dpa422 Power Integrations, Inc., dpa422 Datasheet - Page 10

• Manufacturer Part Number: dpa422
• Description: Highly Integrated Dc-dc Converter Ics For Power Over Ethernet & Telecom Applications
• Manufacturer: Power Integrations, Inc.

Figure 7.
Figure 8.
Rev. S 12/07
X Pin Voltage
10
Switching
MOSFET
EXTERNAL CURRENT LIMIT (X)
Current
Note: These figures provide idealized functional characteristics with typical performance values. Please refer to the
Output
Limit
LINE-SENSE and EXTERNAL CURRENT LIMIT Pin Characteristics.
LINE-SENSE (L), and EXTERNAL CURRENT LIMIT (X) Pin Input Simplifi ed Schematic
parametric table and typical performance characteristics sections of the data sheet for measured data.
DPA422-426
-250
(Enabled)
(Disabled)
I
LIMIT
X Pin Current (μA)
LINE-SENSE (L)
-200
(Default)
CONTROL (C)
-150
V
BG
-100
-25.5 μA
-21.5 μA
-50
I
REM(U)
0
230 μA
V
BG
+ V
L Pin Voltage
Duty Cycle
V
MOSFET
Switching
Maximum
T
240 μA
(Negative Current Sense - ON/OFF,
Output
BG
DPA-Switch
Current Limit Adjustment)
1 V
(Positive Current Sense - Under-Voltage,
Overvoltage, ON/OFF Maximum Duty
0
(Voltage Sense)
I
UV(U)
L Pin Current (μA)
50
Cycle Reduction)
(Enabled)
(Disabled)
47 μA
100
I
OV(U)
150
V
DC
BG
131 μA
135 μA
+ V
MAX
200
TP
(75%)
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250
PI-2778-080801
PI-2765-061704