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參數(shù)資料
| 型號： | FPF2007 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | IntelliMAX⑩ Advanced Load Management Products |
| 中文描述： | 0.15 A BUF OR INV BASED PRPHL DRVR, PDSO5 |
| 封裝： | SC-70, 5 PIN |
| 文件頁數(shù)： | 8/10頁 |
| 文件大小： | 516K |
| 代理商： | FPF2007 |
8
www.fairchildsemi.com
FPF2000-FPF2007 Rev. C1
F
Application Information
Typical Application
Input Capacitor
To limit the voltage drop on the input supply caused by transient
in-rush currents when the switch turns-on into a discharged load
capacitor or a short-circuit, a capacitor needs to be placed
between V
IN
and GND. A 0.1μF ceramic capacitor, C
close to the pins is usually sufficient. Higher values of C
be used to further reduce the voltage drop.
IN
, placed
can
IN
Output Capacitor
A 0.1μF capacitor COUT, should be placed between V
GND. This capacitor will prevent parasitic board inductances
from forcing V
OUT
below GND when the switch turns-off. For the
FPF2000-FPF2002 and the FPF2004-FPF2006, the total output
capacitance needs to be kept below a maximum value,
COUT(max), to prevent the part from registering an over-current
condition and turning-off the switch. The maximum output
capacitance can be determined from the following formula,
OUT
and
Due to the integral body diode in the PMOS switch, a C
greater than C
OUT
is highly recommended. A C
C
IN
can cause V
OUT
to exceed V
removed. This could result in current flow through the body
diode from V
OUT
to V
IN
.
Power Dissipation
IN
OUT
greater than
IN
when the system supply is
During normal operation as a switch, the power dissipation is
small and has little effect on the operating temperature of the
part. The parts with the higher current limits will dissipate the
most power and that will only be,
If the part goes into current limit the maximum power dissipation
will occur when the output is shorted to ground. For the
FPF2000, FPF2001, FPF2004 and FPF2005, the power dissi-
pation will scale by the Auto-Restart Time, t
RESTART
, and the
Over Current Blanking Time, t
power dissipated is,
BLANK
, so that the maximum
When using the FPF2002 and FPF2006 attention must be given
to the manual resetting of the part. Continuously resetting the
part at a high duty cycle when a short on the output is present
can cause the temperature of the part to increase. The junction
temperature will only be allowed to increase to the thermal shut-
down threshold. Once this temperature has been reached, tog-
gling ON will not turn-on the switch until the junction
temperature drops. For the FPF2003 and FPF2007, a short on
the output will cause the part to operate in a constant current
state dissipating a worst case power as calculated in (3) until
the thermal shutdown activates. It will then cycle in and out of
thermal shutdown so long as the ON pin is active and the short
is present.
Board Layout
For best performance, all traces should be as short as possible.
To be most effective, the input and output capacitors should be
placed close to the device to minimize the effects that parasitic
trace inductances may have on normal and short-circuit opera-
tion. Using wide traces for V
IN
, V
mize parasitic electrical effects along with minimizing the case
to ambient thermal impedance.
OUT
and GND will help mini-
V
OUT
To Load
ON
GND
FPF2000-FPF2007
FLAGB
OFF ON
C
OUT
I
max
----------------------------V
(
)
t
min
IN
(
)
×
=
(1)
P
I
LIM
(
)
2
R
DS
×
0.2
(
)
2
0.7
×
28mW
=
=
=
(2)
P max
)
t
RESTART
t
BLANK
+
t
V
IN max
)
×
I
LIM max
)
×
=
=
+
80
10
-----10
5.5
×
0.2
×
1.22mW
=
(3)
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FPF2007_SB5S011 | 功能描述:電源開關(guān) IC - 配電 Full Function Load Switches RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FPF2024 | 功能描述:開關(guān) IC - 各種 100mA Curr. Lmt Full Functional Load RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
| FPF2025 | 功能描述:開關(guān) IC - 各種 100mA Curr. Lmt Full Functional Load RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
| FPF2026 | 功能描述:開關(guān) IC - 各種 100mA Curr. Lmt Full Functional Load RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
| FPF2026CSP_AAB3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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