参数资料
| 型号： | FPF2108 |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC LOAD SWITCH ADVANCED SOT23-5 |
| 产品变化通告： | Mold Compound Change 12/Dec/2007 |
| 标准包装： | 3,000 |
| 系列： | IntelliMax™ |
| 类型： | 高端开关 |
| 输出数： | 1 |
| Rds（开）： | 160 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 400mA |
| 输入电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 带卷 (TR) |
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
constant 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.
FPF2108-FPF2110 Rev. E
9
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FPF2108_08 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:IntelliMAX⑩ Advanced Load Management Products |
| FPF2109 | 功能描述:功率驱动器IC INTELLIMAX ADV LOADM RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| FPF21-1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| FPF2110 | 功能描述:电源开关 IC - 配电 INTELLIMAX ADV L RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| FPF2116 | 功能描述:电源开关 IC - 配电 IntelliMAX Adv Load Management Products RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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