TOP242-250
Y, R and F Package
CONTROL (C)
TOPSwitch-GX
240 µA
(Negative Current Sense - ON/OFF,
Current Limit Adjustment)
VBG + VT
EXTERNAL CURRENT LIMIT (X)
LINE-SENSE (L)
(Voltage Sense)
1 V
VBG
(Positive Current Sense - Under-Voltage,
Overvoltage, ON/OFF Maximum Duty
Cycle Reduction)
400 µA
PI-2634-022604
Figure 12a. LINE-SENSE (L), and EXTERNAL CURRENT LIMIT (X) Pin Input Simplified Schematic.
P and G Package
CONTROL (C)
TOPSwitch-GX
240 µA
(Negative Current Sense - ON/OFF,
Current Limit Adjustment)
VBG + VT
MULTI-FUNCTION (M)
VBG
(Positive Current Sense - Under-Voltage,
Overvoltage, Maximum Duty
Cycle Reduction)
400 µA
PI-2548-022604
Figure 12b. MULTI-FUNCTION (M) Pin Input Simplified Schematic.
M
12/04
13