參數(shù)資料
型號(hào)： TOP242G-TL
廠商： POWER INTEGRATIONS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.72 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PDSO7
封裝： PLASTIC, SMD-8/7
文件頁(yè)數(shù)： 4/52頁(yè)
文件大?。?/td> 2175K
代理商： TOP242G-TL
TOP242-250
N
4/05
12
be used as a remote ON/OFF and a synchronization input in
both modes. Please refer to Table 3 for possible combinations
of the functions with example circuits shown in Figure 30
through Figure 40. A description of specic functions in terms
of the MULTI-FUNCTION pin I/V characteristic is shown in
Figure 11. The horizontal axis represents MULTI-FUNCTION
pincurrentwithpositivepolarityindicatingcurrentsowinginto
the pin. The meaning of the vertical axes varies with functions.
For those that control the ON/OFF states of the output such
as UV, OV and remote ON/OFF, the vertical axis represents
the enable/disable states of the output. UV triggers at I
UV
(+50 A typical) and OV triggers at I
OV (+225 A typical with
30 A hysteresis). Between the UV and OV thresholds, the
output is enabled. For external current limit and line feed-
forward with DC
MAX reduction, the vertical axis represents the
magnitude of the I
LIMIT and DCMAX. Line feed-forward with
DC
MAX reduction lowers maximum duty cycle from 78% at IM(DC)
(+60 A typical) to 38% at I
OV (+225 A). External current
limit is available only with negative MULTI-FUNCTION
pin current. Please see graphs in the Typical Performance
Characteristics section for the current limit programming
range and the selection of appropriate resistor value.
-250
-200
-150
-100
-50
0
50
100
150
200
250
300
350
400
PI-2636-010802
Output
MOSFET
Switching
(Enabled)
(Disabled)
ILIMIT (Default)
DCMAX (78.5%)
Current
Limit
M Pin
L Pin
X Pin
Maximum
Duty Cycle
VBG
-22
A
-27
A
VBG + VTP
I
IUV
IREM(N)
IOV
Pin Voltage
Note: This figure provides idealized functional characteristics with typical performance values. Please refer to the parametric
table and typical performance characteristics sections of the data sheet for measured data.
X and L Pins (Y, R or F Package) and M Pin (P or G Package) Current (
A)
Disabled when supply
output goes out of
regulation
Figure 11. MULTI-FUNCTION (P or G package), LINSE-SENSE, and EXTERNAL CURRENT LIMIT (Y, R or F package) Pin Characteristics.
相關(guān)PDF資料
PDF描述
TOP246F 4.32 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
TOP249F 8.64 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
TOP244P 2.16 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PDIP7
TOP249FN-TL 8.64 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
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