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参数资料
| 型号： | FPF2103 |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH LOAD FULL FUNC SOT23-5 |
| 产品变化通告： | Mold Compound Change 12/Dec/2007 |
| 标准包装： | 1 |
| 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： | 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： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1217 (CN2011-ZH PDF) |
| 其它名称： | FPF2103DKR |
Application Information
Typical Application
Battery
1.8V-5.5V
OFF ON
V IN V OUT
FPF2100 - FPF2107
ON FLAGB
R1 = 100K ?
LOAD
R2 = 499 ?
Input Capacitor
C1 = 4.7μF
GND
C2 = 0.1μF
I LIM ( max ) × t BLANK ( min )
C OUT ( max ) = --------------------------------------------------------------------
P ( max ) = --------------------------------------------------- x V IN ( max ) x I LIM ( max )
= ----------------------- × 5.5 × 0.8 = 260mW
10 + 160
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 4.7μF ceramic capacitor, C IN , must be
placed close to the V IN pin. A higher value of C IN can be used to
further reduce the voltage drop experienced as the switch is
turned on into a large capacitive load.
Output Capacitor
A 0.1uF capacitor C OUT , should be placed between V OUT and
GND. This capacitor will prevent parasitic board inductances
from forcing V OUT below GND when the switch turns-off. For the
FPF2100-FPF2102 and the FPF2104-FPF2106, the total output
capacitance needs to be kept below a maximum value,
C OUT (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,
(1)
V IN
Due to the integral body diode in the PMOS switch, a C IN
greater than C OUT is highly recommended. A C OUT greater than
C IN can cause V OUT to exceed V IN when the system supply is
removed. This could result in current flow through the body
diode from V OUT to V IN .
Power Dissipation
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 typically be,
If the part goes into current limit the maximum power dissipation
will occur when the output is shorted to ground. For the
FPF2100, FPF2101, FPF2104 and FPF2105, the power
dissipation will scale by the Auto-Restart Time, t RSTRT , and the
Over Current Blanking Time, t BLANK , so that the maximum
power dissipated is typically,
t BLANK
t RESTART + t BLANK
10
(3)
When using the FPF2102 and FPF2106 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
shutdown threshold. Once this temperature has been reached,
toggling ON will not turn on the switch until the junction
temperature drops. For the FPF2103 and FPF2107, 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
operation. Using wide traces for V IN , V OUT and GND will help
minimize parasitic electrical effects along with minimizing the
case to ambient thermal impedance.
P = ( I LIM ) × R DS = ( 0.2 ) × 0.125 = 80mW
2 2
(2)
FPF2100-FPF2107 Rev. H
10
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FPF2104 | 功能描述:功率驱动器IC INTELLIMAX ADV L 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 |
| FPF2105 | 功能描述:电源开关 IC - 配电 INTELLIMAX ADV 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 |
| FPF2106 | 功能描述:功率驱动器IC INTELLIMAX ADV L 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 |
| FPF2107 | 功能描述:功率驱动器IC INTELLIMAX ADV 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 |
| FPF2107-CUT TAPE | 制造商:FAIRCHILD 功能描述:FPF2107 Series 5.5 V 400 mA 160 mOhm P-channel Load Switch - SOT-23-5 |
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