TOP252-262
Parameter
Multi-Function (M), Voltage Monitor (V) and External Current Limit (X) Inputs
Output Overvoltage
Latching Shutdown
Threshold Current
V or M Pin Reset Voltage
Remote ON/OFF
Negative Threshold
Current and Hysteresis
(M or X Pin)
V or M Pin Short Circuit
Current
X or M Pin Short Circuit
Current
V or M Pin Voltage
(Positive Current)
V or M Pin Voltage
Hysteresis (Positive
Current)
X or M Pin Voltage
(Negative Current)
Maximum Duty Cycle
Reduction Onset
Threshold Current
Maximum Duty Cycle
Reduction Slope
Remote OFF DRAIN
Supply Current
Remote ON Delay
Remote OFF
Setup Time
Frequency Input
FREQUENCY Pin
Threshold Voltage
FREQUENCY Pin
Input Current
34
Rev. J 08/16
Conditions
SOURCE = 0 V; T
Symbol
(Unless Otherwise Specified)
I
T
OV(LS)
V
or
T
V(TH)
V
M(TH)
I
T
= 25 °C
REM (N)
J
I
or
T
= 25 °C
V(SC)
I
J
M(SC)
I
or
X(SC)
V
, V
= 0 V
I
X
M
M(SC)
V
or V
V
M
I
or I
= I
V
M
OV
V
or
V(hyst)
V
M(hyst)
V
or V
X
M
I
or
I
≥ I
V(DC)
I
C
M(DC)
T
= 25 °C
J
I
V
= 150 V
D(RMT)
DRAIN
From Remote ON to Drain
t
Turn-On
R(ON)
See Note B
Minimum Time Before Drain
t
Turn-On to Disable Cycle
R(OFF)
See Note B
V
See Note B
F
I
T
= 25 °C
F
J
= -40 to 125 °C
J
= 25 °C
J
= 25 °C
J
Threshold
Hysteresis
V
, V
= V
V
M
C
Normal Mode
Auto-Restart Mode
I
or I
= I
V
M
UV
TOP252-TOP257
TOP258-TOP262
I
or I
= I
V
M
OV
= -50 mA
I
or I
X
M
I
or I
= -150 mA
X
M
, T
= 25 °C
B
J
I
< I
<48 mA or
V(DC)
V
I
< I
<48 mA
M(DC)
M
≥48 mA
I
or I
V
M
X, V or M Pin
Floating
V or M Pin Shorted to
CONTROL
66 kHz
132 kHz
66 kHz
132 kHz
V
= V
F
C
Min
Typ
Max
269
336
403
0.8
1.0
1.6
-35
-27
-20
5
300
400
500
-260
-200
-140
-95
-75
-55
2.10
2.8
3.20
2.79
3.0
3.21
2.83
3.0
3.25
0.2
0.5
1.23
1.30
1.37
1.15
1.22
1.29
18.9
22.0
24.2
-1.0
-0.25
0.6
1.0
1.0
1.6
3.0
1.5
3.0
1.5
2.9
10
55
90
Units
mA
V
mA
mA
mA
V
V
V
mA
%/mA
mA
ms
ms
V
mA
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