TOP232-234
IREM(N)
IUV
IOV
(Enabled)
Output
MOSFET
Switching
(Disabled)
Disabled when supply
output goes out of
regulation
IM
ILIMIT (Default)
Current
Limit
IM
DCMAX (78.5%)
Maximum
Duty Cycle
IM
VBG + VTP
MULTI-
FUNCTION
Pin Voltage
VBG
IM
-250
-200
-150
-100
-50
0
50
100
150
200
250
300
350
400
MULTI-FUNCTION Pin Current (µA)
Note: This figure provides idealized functional characteristics of the MULTI-FUNCTION pin with typical performance values.
Please refer to the parametric table and typical performance characteristics sections of the data sheet for measured data.
PI-2524-081999
Figure 8. MULTI-FUNCTION Pin Characteristics.
CONTROL Pin
TOPSwitch-FX
240 µA
(Negative Current Sense - ON/OFF,
Current Limit Adjustment)
VBG + VT
MULTI-FUNCTION Pin
VBG
(Positive Current Sense - Under-Voltage,
Over-Voltage, Maximum Duty
Cycle Reduction)
400 µA
PI-2548-092399
Figure 9. MULTI-FUNCTION Pin Input Simplified Schematic.
B
7/01
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PAM [ POWER ANALOG MICOELECTRONICS ]
