FDG901D
Slew Rate Control IC for P-Channel MOSFETs
Features
General Description
Three Programmable Slew Rates
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.
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
RoHS Compliant
Applications
Battery Load switch
Power management
Pin 1
SC70-5
Package Marking and Ordering Information
Device Marking
Device
Reel Size
Tape Width
Quantity
91
FDG901D
7”
8mm
3000 units
©2007 Fairchild Semiconductor Corporation
FDG901D Rev. E
1
www.fairchildsemi.com
FDG901D Slew Rate Control IC for P-Channel MOSFETs
February 2008
TA = 25°C unless otherwise noted
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
P-Channel Switching Times (VSUPPLY = 5.5V, VDD = 5.5V, Logic IN = 5.5V, CLOAD = 510pF, Test Circuit)
= Open
Delay On Time
8.3
s
Slew Pin = GND
tdON
0.6
ms
= VDD
VOUT Rise Time
ms
28
s
Slew Pin = GND
tR
2.2
= Open
1.8
ms
11
ms
= VDD
= Open
Output Slew Rate
162
V/ms
Slew Pin = GND
dv/dt
26
V/ms
0.3
V/ms
= VDD
VDD
SLEW
2
VSUPPLY
3
L O G IC IN
CLoad
10%
90%
1
LOGIC IN
4
O U TPUT
( In v e r te d )
5
10%
td O N
tR
Test Circuit
FDG901D Rev. E
Switching Waveform
3
www.fairchildsemi.com
FDG901D Slew Rate Control IC for P-Channel MOSFETs
Electrical Characteristics Cont.
