- 您现在的位置：买卖IC网 > PDF目录1793 > FPF1038UCX (Fairchild Semiconductor)IC LOAD MGMT SWITCH ADV 6-WLCSP PDF资料下载
参数资料
| 型号： | FPF1038UCX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC LOAD MGMT SWITCH ADV 6-WLCSP |
| 标准包装： | 3,000 |
| 系列： | IntelliMax™ |
| 类型： | 高端开关 |
| 输出数： | 1 |
| Rds（开）： | 21 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 2A |
| 输入电压： | 1.2 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-UFBGA，WLCSP |
| 供应商设备封装： | 6-WLCSP |
| 包装： | 带卷 (TR) |
Application Information
Input Capacitor
This IntelliMAX? switch doesn’t require an input
capacitor. To reduce device inrush current, a 0.1 μF
ceramic capacitor, C IN , is recommended close to the
VIN pin. A higher value of C IN can be used to reduce the
At maximum operational voltage (V IN =5.5 V), device
inrush current might be higher than expected. Spike
current should be taken into account if V IN >5 V and the
output capacitor is much larger than the input capacitor.
Input current can be calculated as:
voltage drop experienced as the switch is turned on into
a large capacitive load.
I IN ( t ) ≈
V OUT ( t )
R LOAD
+ ( C LOAD ? C IN )
dV OUT ( t )
dt
(3)
Output Capacitor
While this switch works without an output capacitor: if
parasitic board inductance forces V OUT below GND
when switching off; a 0.1 μF capacitor, C OUT , should be
placed between V OUT and GND.
where switch and wire resistances are neglected and
capacitors are assumed ideal.
Estimating V OUT (t)=V IN /10 and using experimental
formula for slew rate (dV OUT (t)/dt), spike current can be
written as:
Fall Time
Device output fall time can be calculated based on RC
max ( I IN ) =
V IN
10 R LOAD
? ? ? ?
+ ( C LOAD ? C IN ) ? 0 . 05 V IN ? 0 . 255 ?
(4)
constant of the external components as follows:
t F = R L × C L × 2 . 2 (1)
where t F is 90% to 10% fall time, R L is output load,
where supply voltage V IN is in volts, capacitances are
in micro farads, and resistance is in ohms.
Example: If V IN =5.5 V, C LOAD =100 μF, C IN =10 μF, and
R LOAD =50 ? ; calculate the spike current by:
and C L is output capacitor.
The same equation works for a device with a pull-down
max( I IN ) =
5 . 5
10 ? 50
+ ( 100 ? 10 )( 0 . 05 ? 5 . 5 ? 0 . 255 ) A = 1 . 8 A
(5)
output resistor. R L is replaced by a parallel connected
pull-down and an external output resistor combination as:
Maximum spike current is 1.8 A, while average ramp-
up current is:
t F =
R L × R PD
R L + R PD
× C L × 2 . 2
(2)
I IN ( t ) ≈
V OUT ( t )
R LOAD
+ ( C LOAD ? C IN )
dV IN ( t )
dt
(6)
where t F is 90% to 10% fall time, R L is output load,
R PD =65 ? is output pull-down resistor, and C L is the
output capacitor.
Resistive Output Load
If resistive output load is missing, the IntelliMAX switch
without a pull-down output resistor does not discharge
the output voltage. Output voltage drop depends, in that
case, mainly on external device leaks.
Application Specifics
≈ 2 . 75 / 50 + 100 ? 0 . 0022 = 0 . 275 A
Recommended Layout
For best thermal performance and minimal inductance
and parasitic effects, it is recommended to keep input
and output traces short and capacitors as close to the
device as possible. Figure 29 is a recommended layout
for this device to achieve optimum performance.
Vin
Vout
+
VIN
CIN
OFF ON
ON
FPF1038
CLOAD
RLOAD
GND
Figure 28.
Device Setup
? 2010 Fairchild Semiconductor Corporation
Figure 29.
Recommended Land Pattern, Layout
www.fairchildsemi.com
FPF1038 ? Rev. 1.0.6
10
相关PDF资料 |
PDF描述 |
|---|---|
| FPF1048BUCX | IC LOAD MGMT SWITCH ADV 6-WLCSP |
| FPF1104 | IC LOAD MGMT SWITCH P-CH 4-WLCSP |
| FPF1108 | IC LOAD MGMT SWITCH P-CH 4-WLCSP |
| FPF1204UCX | IC LOAD SWITCH INTELLIMAX 4WLCSP |
| FPF1206UCX | IC LOAD SWITCH ADV 4-WLCSP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FPF1039 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low On-Resistance, Slew-Rate-Controlled Load Switch |
| FPF1039_13 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low On-Resistance, Slew-Rate-Controlled Load Switch |
| FPF1039BUCX | 功能描述:电源开关 IC - 配电 Advanced Load management Switch 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 |
| FPF1039UCX | 功能描述:电源开关 IC - 配电 Low On-Res SlewRate Cntrlld Load Switch 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 |
| FPF1048 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:IntelliMAXa?￠ 3A-Capable, Slew-Rate-Controlled Load Switch with True Reverse Current Blocking |
发布紧急采购，3分钟左右您将得到回复。