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TOP254PN Datasheet(PDF) 37 Page - Power Integrations, Inc.

Part No. TOP254PN
Description  Enhanced EcoSmart®, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
Download  48 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TOP254PN Datasheet(HTML) 37 Page - Power Integrations, Inc.

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Rev. F 01/09
37
TOP252-262
www.powerint.com
NOTES:
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.
Guaranteed by characterization. Not tested in production.
For externally adjusted current limit values, please refer to Figures 55a and 55b (Current Limit vs. External Current Limit Resis-
tance) in the Typical Performance Characteristics section. The tolerance specified is only valid at full current limit.
I2f calculation is based on typical values of I
LIMIT and fOSC, i.e. ILIMIT(TYP)
2 × f
OSC, where fOSC = 66 kHz or 132 kHz depending on package
/ F pin connection. See f
OSC specification for detail.
The TOPSwitch-HX will start up at 18 V
DC drain voltage. The capacitance of electrolytic capacitors drops significantly at tempera-
tures below 0 °C. For reliable start up at 18 V in sub zero temperatures, designers must ensure that circuit capacitors meet
recommended capacitance values.
Breakdown voltage may be checked against minimum BV
DSS specification by ramping the DRAIN pin voltage up to but not
exceeding minimum BV
DSS.
A.
B.
C.
D.
E.
F.
Parameter
Symbol
Conditions
SOURCE = 0 V; T
J = -40 to 125 °C
(Unless Otherwise Specified)
Min
Typ
Max
Units
Output (cont.)
ON-State
Resistance
R
DS(ON)
TOP259
I
D = 600 mA
T
J = 25 °C
1.45
1.70
Ω
T
J = 100 °C
2.25
2.60
TOP260
I
D = 700 mA
T
J = 25 °C
1.20
1.40
T
J = 100 °C
1.80
2.10
TOP261
I
D = 800 mA
T
J = 25 °C
1.05
1.20
T
J = 100 °C
1.55
1.80
TOP262
I
D = 900 mA
T
J = 25 °C
0.90
1.05
T
J = 100 °C
1.35
1.55
DRAIN Supply Voltage
T
J ≤ 85 °C, See Note E
18
V
36
OFF-State Drain
Leakage Current
I
DSS
V
V, VM = Floating, IC = 4 mA,
V
DS = 560 V, TJ = 125 °C
470
μA
Breakdown
Voltage
BV
DSS
V
V, VM = Floating, IC = 4 mA,
T
J = 25 °C
See Note F
700
V
Rise Time
t
R
Measured in a Typical Flyback
Converter Application
100
ns
Fall Time
t
F
50
ns
Supply Voltage Characteristics
Control Supply/
Discharge Current
I
CD1
Output
MOSFET
Enabled
V
X, VV, VM =
0 V
66 kHz
Operation
TOP252-255
0.6
1.2
2.0
mA
TOP256-258
0.9
1.4
2.3
TOP259-262
1.1
1.6
2.5
132 kHz
Operation
TOP252-255
0.8
1.3
2.2
TOP256-258
1.1
1.6
2.5
TOP259-262
1.5
2.2
2.9
I
CD2
Output MOSFET Disabled
V
X, VV, VM = 0 V
0.3
0.6
1.3


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