Datasheet

TOP242-250
39
I
4/03
Conditions
(Unless Otherwise Specified)
See Figure 53
SOURCE = 0 V
; T
J
= -40 to 125 °C
Min Typ Max
Parameter
Symbol
Units
SUPPLY VOLTAGE CHARACTERISTICS
36
5.60 5.85 6.10
±50
1.0 1.6 2.5
1.2 2.2 3.2
1.3 2.4 3.65
0.3 0.6 1.3
V
V
ppm/°C
mA
V
C(SHUNT)
l
CD1
l
CD2
See Note E
I
C
= 4 mA
Output
MOSFET Disabled
V
X
, V
L
, V
M
= 0 V
NOTES:
A. For specifications with negative values, a negative temperature coefficient corresponds to an increase in
magnitude with increasing temperature, and a positive temperature coefficient corresponds to a decrease in
magnitude with increasing temperature.
B. Guaranteed by characterization. Not tested in production.
C. For externally adjusted current limit values, please refer to Figure 55 (Current Limit vs. External Current Limit
Resistance) in the Typical Performance Characteristics section.
D. Breakdown voltage may be checked against minimum BV
DSS
specification by ramping the DRAIN pin voltage up to
but not exceeding minimum BV
DSS
.
E. It is possible to start up and operate TOPSwitch-GX at DRAIN voltages well below 36 V. However, the
CONTROL pin charging current is reduced, which affects start-up time, auto-restart frequency, and auto-restart
duty cycle. Refer to Figure 67, the characteristic graph on CONTROL pin charge current (I
C
) vs. DRAIN voltage
for low voltage operation characteristics.
DRAIN Supply
Voltage
Shunt Regulator
Voltage
Shunt Regulator
Temperature Drift
Control Supply/
Discharge Current
Output
MOSFET Enabled
V
X
, V
L
, V
M
= 0 V
TOP242-245
TOP246-249
TOP250
OUTPUT
Rise Time
Fall Time
t
R
t
F
Measured in a Typical
Flyback Converter Application
100 ns
50 ns
Off-State Drain
Leakage Current
Breakdown
Voltage
R
DS(ON)
470 µA
700 V
V
L
, V
M
= Floating; I
C
= 4 mA
V
DS
= 560 V; T
J
= 125 °C
V
L
, V
M
= Floating; I
C
= 4mA
See Note D, T
J
= 25 °C
TOP250
I
D
= 700 mA
T
J
= 25 °C
T
J
= 100 °C
1.10 1.28
1.85 2.15
Ω
ON-State
Resistance
BV
DSS
I
DSS