參數(shù)資料
型號： TOP248FN-TL
廠商： POWER INTEGRATIONS INC
元件分類： 穩(wěn)壓器
英文描述： 7.2 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
封裝： LEAD FREE, PLASTIC, TO-262, 7/6 PIN
文件頁數(shù)： 35/52頁
文件大?。?/td> 2175K
代理商： TOP248FN-TL
TOP242-250
N
4/05
40
Figure 54a. Current Limit vs. X or M Pin Current (see Figures 55a and 56a for TOP245P and TOP246P).
The following precautions should be followed when testing
TOPSwitch-GX
by itself outside of a power supply. The
schematicshowninFigure53issuggestedforlaboratorytesting
of TOPSwitch-GX.
When the DRAIN pin supply is turned on, the part will be
in the auto-restart mode. The CONTROL pin voltage will be
oscillating at a low frequency between 4.8 V and 5.8 V and
the drain is turned on every eigth cycle of the CONTROL pin
oscillation. If the CONTROL pin power supply is turned on
while in this auto-restart mode, there is only a 12.5% chance
that the CONTROL pin oscillation will be in the correct state
(drainactivestate)sothatthecontinuousdrainvoltagewaveform
may be observed. It is recommended that the V
C power supply
be turned on rst and the DRAIN pin power supply second if
continuous drain voltage waveforms are to be observed. The
12.5% chance of being in the correct state is due to the divide-
by-8 counter. Temporarily shorting the CONTROL pin to the
SOURCE pin will reset TOPSwitch-GX, which then will come
up in the correct state.
BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS
Typical Performance Characteristics
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
60
40
80
100
120
140
160
180
200
-250
-200
-150
-100
-50
IX or IM (A)
Current
Limit
(A)
di/dt
(mA/
s)
PI-2653-031904
0
Scaling Factors:
TOP242 P/G/Y/R/F: .45
TOP243 P/G:
.75
TOP243 Y/R/F:
.90
TOP244 P/G:
1
TOP244 Y/R/F:
1.35
TOP245 Y/R/F:
1.80
TOP246 Y/R/F:
2.70
TOP247 Y/R/F:
3.60
TOP248 Y/R/F
4.50
TOP249 Y/R/F:
5.40
TOP250 Y/R/F:
6.32
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
60
40
80
100
120
140
160
180
200
0
5K
10K
15K
20K
25K
30K
35K
40K
External Current Limit Resistor RIL ()
Current
Limit
(A
)
di/dt
(mA/
s)
PI-2652-042303
45K
Maximum and minimum levels
are based on characterization.
Minimum
Typical
Maximum
Scaling Factors:
TOP242 P/G/Y/R/F: .45
TOP243 P/G:
.75
TOP243 Y/R/F:
.90
TOP244 P/G:
1
TOP244 Y/R/F:
1.35
TOP245 Y/R/F:
1.80
TOP246 Y/R/F:
2.70
TOP247 Y/R/F:
3.60
TOP248 Y/R/F
4.50
TOP249 Y/R/F:
5.40
TOP250 Y/R/F:
6.32
Figure 54b. Current Limit vs. External Current Limit Resistance (see Figures 55b and 56b for TOP245P and
TOP246P).
相關(guān)PDF資料
PDF描述
TOP250F-TL 10.08 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
TOP245F 2.88 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
TOP245FN-TL 2.88 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
TOP247F 5.76 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
TOP244GTL 2.16 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PDSO7
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TOP248F-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248G- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248GN- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248GN-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248G-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
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