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Número de pieza | FPF2148 | |
Descripción | Full Function Load Switch | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de FPF2148 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
No Preview Available ! FPF2148
Full Function Load Switch
Features
1.8 to 5.5V Input Voltage Range
Controlled Turn-On
200mA Current Limit Options
Undervoltage Lockout
Thermal Shutdown
<2µA Shutdown Current
Fast Current limit Response Time
5µs to Moderate Over Currents
30ns to Hard Shorts
Fault Blanking
Power Good Function
RoHS Compliant
Applications
PDAs
Cell Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Hot Swap Supplies
November 2008
tm
General Description
The FPF2148 is a load switch which provides full protection to
systems and loads which may encounter large current
conditions. These devices contain a 0.12Ω current-limited
P-channel MOSFET which can operate over an input voltage
range of 1.8-5.5V. Switch control is by a logic input (ONB)
capable of interfacing directly with low voltage control signals.
The part contains thermal shutdown protection which shuts off
the switch to prevent damage to the part when a continuous
over-current condition causes excessive heating.
When the switch current reaches the current limit, the part
operates in a constant-current mode to prohibit excessive
currents from causing damage. For the FPF2148, a current limit
condition will immediately pull the fault signal pin low and the
part will remain in the constant-current mode until the switch
current falls below the current limit. The minimum current limit is
200mA.
The part is available in a space-saving 6 pin 2X2 MLP package.
BOTTOM
Pin 1
TOP
Ordering Information
Part
FPF2148
Current Limit
[mA]
200/300/400
Current Limit
Blanking Time
[ms]
0
Auto-Restart
Time
[ms]
NA
ONB Pin
Activity
Active LO
©2008 Fairchild Semiconductor Corporation
FPF2148 Rev. H
1
www.fairchildsemi.com
1 page Typical Characteristics
90
85
80
75
70
65
60
1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
SUPPLY VOLTAGE (V)
Figure 1. Quiescent Current vs. Input Voltage
110
105
100
95
90
85
80
75
70
65
60
55
50
-40
VIN = 5.5V
VIN = 3.3V
VIN = 1.8V
-15 10 35 60
TJ, JUNCTION TEMPERATURE (°C)
85
Figure 2. Quiescent Current vs. Temperature
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
SUPPLY VOLTAGE (V)
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
SUPPLY VOLTAGE (V)
Figure 3. VONB High Voltage vs. Input Voltage
Figure 4. VONB Low Voltage vs. Input Voltage
200
190
180
170
160
150
140
130
120
110
100
90
80
1
234
VIN, SUPPLY VOLTAGE (V)
Figure 5. RON vs. VIN
5
240
220
200
180
160
140
120
100
80
60
6 -40
VIN= 1.8V
VIN= 3.3V
VIN= 5.5V
-15 10 35 60
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. RON vs. Temperature
85
FPF2148 Rev. H
5 www.fairchildsemi.com
5 Page Dimensional Outline and Pad Layout
FPF2148 Rev. H
11 www.fairchildsemi.com
11 Page |
Páginas | Total 13 Páginas | |
PDF Descargar | [ Datasheet FPF2148.PDF ] |
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