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부품번호 | FDG901 기능 |
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기능 | Slew Rate Control Driver IC for P-Channel MOSFETs | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 6 페이지수
April 2002
FDG901D
Slew Rate Control Driver IC for P-Channel MOSFETs
General Description
The FDG901D is specifically designed to control the
turn on of a P-Channel MOSFET in order to limit the
inrush current in battery switching applications with high
capacitance loads. During turn-on the FDG901D drives
the MOSFET’s gate low with a regulated current
source, thereby controlling the MOSFET’s turn on. For
turn-off, the IC pulls the MOSFET gate up quickly, for
efficient turn off.
Applications
• Power management
• Battery Load switch
Features
• Three Programmable slew rates
• Reduces inrush current
• Minimizes EMI
• Normal turn-off speed
• Low-Power CMOS operates over wide voltage range
• Compact industry standard SC70-5 surface mount
package
pin 1
GATE 1
SLEW 2
VDD 3
5 GND
4 LOGIC IN
Absolute Maximum Ratings TA=25oC unless otherwise noted
Symbol
Parameter
VDD
VIN
PD
TJ, TSTG
Supply Voltage
DC Input Voltage (Logic Inputs)
Power Dissipation for Single Operation @ 85°C
Operating and Storage Junction Temperature Range
Recommended Operating Range
VDD Supply Voltage
TJ Operating Temperature
Thermal Characteristics
RθJA Thermal Resistance, Junction-to-Ambient
(Note 1)
Package Marking and Ordering Information
Device Marking
Device
Reel Size
91
FDG901D
7’’
Ratings
-0.5 to 10
-0.7 to 6
150
-65 to +150
2.7 to 6.0
-40 to +125
425
Tape width
8mm
Units
V
V
mW
°C
V
°C
°C/W
Quantity
3000 units
2002 Fairchild Semiconductor Corporation
FDG901D rev. E (W)
Source
I
Drain
Gate
Logic
Signal
Slew Rate
Control
VDD
3
4
2
5
1
Ig
Load
Application Circuit
Typical Application
Battery powered systems make extensive usage of load switching, turning the power to
subsystems off, in order to extend battery life. Power MOSFETs are used to accomplish this
task. In PDA’s and Cell phones, these MOSFETs are usually low threshold P-Channels. Since
the loads typically include bypass capacitor components (high capacitive component), a high
inrush current can occur when the load is switched on. This inrush current can cause transients
on the main power supply disturbing circuitry supplied by it.
The simplest method of limiting the inrush current is to control the slew rate of the MOSFET
switch. This can be done with external R/C circuits, but this approach can occupy significant PCB
area, and involves other compromises in performance. The slew rate control driver IC FDG901D
is specifically designed to interface low voltage digital circuitry with power MOSFETs and reduce
the rapid inrush current in load switch applications. The IC limits inrush current by controlling the
current, which drives the gate of the P-Channel MOSFET switch.
The control input is a CMOS compatible input with a minimum high input voltage of 2.55V with a
power rail voltage of 6V. Therefore, it is compatible with any CMOS logic voltages between
2.55V and 5V and under these conditions there is no additional configuration required.
FDG901D rev. D (W)
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부품번호 | 상세설명 및 기능 | 제조사 |
FDG901 | Slew Rate Control Driver IC for P-Channel MOSFETs | Fairchild Semiconductor |
FDG901D | Slew Rate Control Driver IC for P-Channel MOSFETs | Fairchild Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |