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參數資料
| 型號： | FPF2108 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 外設及接口 |
| 英文描述： | IntelliMAX Advanced Load Management Products |
| 中文描述： | 0.6 A BUF OR INV BASED PRPHL DRVR, PDSO5 |
| 封裝： | 1.60 MM, ROHS COMPLIANT, MO-178AA, SOT-23, 5 PIN |
| 文件頁數： | 9/12頁 |
| 文件大小： | 423K |
| 代理商： | FPF2108 |
9
www.fairchildsemi.com
FPF2108-FPF2110 Rev. B
F
Description of Operation
The FPF2108-FPF2110 is a current limited switch that protects
systems and loads which can be damaged or disrupted by the
application of high currents. The core of the device is a 0.125
P-channel MOSFET and a controller capable of functioning over
a wide input operating range of 1.8-5.5V. The controller
protects against system malfunctions through current limiting,
under-voltage lockout and thermal shutdown. The current limit
is preset for either 200mA or 400mA.
On/OffControl
The ON pin controls the state of the switch. Active HI and LO
versions are available. Refer to the Ordering Information for
details. Activating ON continuously holds the switch in the on
state so long as there is no fault. For all versions, an
under-voltage on V
IN
or a junction temperature in excess of
150°C overrides the ON control to turn off the switch. For
FPF2108, the ON pin must be toggled to turn on the switch
again. The FPF2109 and FPF2110 do not turn off in response
to a over current condition but instead remain operating in a
constant current mode so long as ON is active and the thermal
shutdown or under-voltage lockout have not activated. When
the MOSFET is off, the body diode is disabled so no current
can flow through it.
Fault Reporting
Upon the detection of an over-current, an input under-voltage,
or an over-temperature condition, the FLAGB signals the fault
mode by activating LO. For the FPF2108, the FLAGB goes LO
at the end of the blanking time while FLAGB goes LO immedi-
ately for the FPF2109 and FPF2110. For the FPF2108, FLAGB
is latched LO and ON must be toggled to release it.With the
FPF2109 and FPF2110, FLAGB is LO during the faults and
immediately returns HI at the end of the fault condition. FLAGB
is an open-drain MOSFET which requires a pull-up resistor
between V
IN
and FLAGB. During shutdown, the pull-down on
FLAGB is disabled to reduce current draw from the supply.
Current Limiting
The current limit ensures that the current through the switch
doesn't exceed a maximum value while not limiting at less than
a minimum value. For the FPF2109 the minimum current is
200mA and the maximum current is 400mA and for the
FPF2108 and FPF2110 the minimum current is 400mA and the
maximum current is 800mA. The FPF2108 has a blanking time
of 10ms, nominally, during which the switch will act as a con-
stant current source. At the end of the blanking time, the switch
will be turned-off and the FLAGB pin will activate to indicate that
current limiting has occurred. The FPF2109 and FPF2110 have
no current limit blanking period so immediately upon a current
limit condition FLAGB is activated. These parts will remain in a
constant current state until the ON pin is deactivated or the
thermal shutdown turns-off the switch.
Under-Voltage Lockout
The under-voltage lockout turns-off the switch if the input
voltage drops below the under-voltage lockout threshold. With
the ON pin active the input voltage rising above the
under-voltage lockout threshold will cause a controlled turn on
of the switch which limits current over-shoots.
Thermal Shutdown
The thermal shutdown protects the part from internally or
externally generated excessive temperatures. During an
over-temperature condition the FLAGB is activated and the
switch is turned-off. The switch automatically turns-on again if
the temperature of the die drops below the threshold
temperature.
Ordering Information
Part
Current Limit
[mA]
Current Limit
Blanking Time
[ms]
Auto-Restart
Time
[ms]
ON Pin
Activity
Top Mark
FPF2108
400
10
NA
Active LO
2108
FPF2109
200
0
NA
Active HI
2109
FPF2110
400
0
NA
Active HI
2110
相關PDF資料 |
PDF描述 |
|---|---|
| FPF2109 | IntelliMAX Advanced Load Management Products |
| FPF2110 | IntelliMAX Advanced Load Management Products |
| FPF2123 | IntelliMAX Advanced Load Management Products |
| FPF2124 | IntelliMAX Advanced Load Management Products |
| FPF2125 | IntelliMAX Advanced Load Management Products |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FPF2108_08 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:IntelliMAX⑩ Advanced Load Management Products |
| FPF2109 | 功能描述:功率驅動器IC INTELLIMAX ADV LOADM RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FPF21-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| FPF2110 | 功能描述:電源開關 IC - 配電 INTELLIMAX ADV L RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FPF2116 | 功能描述:電源開關 IC - 配電 IntelliMAX Adv Load Management Products RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
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