FSD176MRT Fairchild Semiconductor, FSD176MRT Datasheet - Page 2
FSD176MRT
Manufacturer Part Number
FSD176MRT
Description
The FSD176MRT is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components
Manufacturer
Fairchild Semiconductor
Datasheet
1.FSD176MRT.pdf
(17 pages)
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© 2011 Fairchild Semiconductor Corporation
FSD176MRT • Rev. 1.0.0
Application Circuit
Internal Block Diagram
N.C.
FB
4
5
24.5V
0.30V / 0.45V
7.0V
V
V
V
SD
CC
OVP
V
V
OSP
V
burst
CC
2.0uA
I
t
DELAY
ON
<t
OSP
AC
IN
V
(1.0μs)
ref
90uA
I
FB
LPF
3R
Soft Start
Soft Burst
R
Figure 1.
FB
Figure 2.
TSD
V
CC
Typical Application Circuit
V
PWM
Internal Block Diagram
STR
Random
V
OSC
CC
GND
Drain
good
2
LEB(300ns)
V
6
STR
S
R
S
R
V
ref
Q
Q
Q
Q
I
CH
V
CC
good
Driver
Gate
V
V
3
CC
O
7.5V / 12V
V
AOCP
Drain
1
www.fairchildsemi.com
2
GND
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