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参数资料
| 型号： | FPF2174 |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC LOAD SWITCH ADVANCED 6MLP 3X3 |
| 标准包装： | 1 |
| 系列： | IntelliMax™ |
| 类型： | 高端开关 |
| 输出数： | 1 |
| Rds（开）： | 125 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 200mA |
| 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： | 6-MLP，Power33 |
| 供应商设备封装： | MicroFET 3x3mm |
| 包装： | 标准包装 |
| 其它名称： | FPF2174DKR |
Description of Operation
The FPF2174 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
Thermal Shutdown
The thermal shutdown protects the die from internally or
externally generated excessive temperatures. During an over-
temperature condition the FLAGB is activated and the switch is
P-channel MOSFET and a controller capable of functioning over
turned-off.
The
switch
automatically
turns-on
again
if
a wide input operating range of 1.8-5.5V paired with a low
forward voltage drop Schottky diode for reverse blocking and a
16V zener diode for output clamp. The controller protects
against system malfunctions through current limiting, under-
voltage lockout and thermal shutdown. The current limit is
preset for 200mA.
On/Off Control
The ON pin controls the state of the switch. Activating ON
continuously holds the switch in the on state so long as there is
no under-voltage on V IN or a junction temperature in excess of
150°C. ON is active HI and has a low threshold making it
capable of interfacing with low voltage signals. When the
MOSFET is off, the Schottky diode acts as a barrier so that no
reverse current can flow when V OUT is greater than V IN .
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. The FLAGB goes LO at the end of the
blanking time and is latched LO and ON must be toggled to
release it. 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 guarantees that the current through the switch
doesn't exceed a maximum value while not limiting at less than
a minimum value. The minimum current is 200mA and the
maximum current is 400mA. The device 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.
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.
temperature of the die drops below the threshold temperature.
Transient Safe Operating Area of Zener Diode
Integrated zener diode is designed to protect systems from a
transient over voltage stress resulting from a flyback voltage
(L*di/dt) such as connecting the output of switch to an active
rails.
When the transient voltage exceed the zener threshold (Vz) the
zener starts conducting and prevents the output of loadswitch
from experiencing those transient over voltages and protects
any reverse current from flowing through the switch. For reliable
operation, user should not exceed the SOA curve shown in
Figure 13.
FPF2174 Rev. F
9
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FPF2174_08 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:IntelliMAX⑩ Advanced Load Management Products |
| FPF2180 | 功能描述:电源开关 IC - 配电 Full Funct Load w/Rev Curr Blocking 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 |
| FPF2182 | 功能描述:电源开关 IC - 配电 Full Funct Load w/Rev Curr Blocking 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 |
| FPF2183 | 功能描述:电源开关 IC - 配电 Full Funct Load w/Rev Curr Blocking 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 |
| FPF2183 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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