Physio Control LIFEPAK 9 - Page 179

LIFEPAK 9 shock advisory adapter Service Manual
TYPE IC NUMBER LOCATION REF. DES.
Pulse-Width Modulator 3525 Main (Al) U2
PIN CONFIGURATION BLOCK DIAGRAM
V REF 16
INV
INPUT
ea]
1
V
REF
GES
NI
INPUT
em)
2
VNN
VNN
15
VOLTAGE
13VC
ROUND
1
1
SYNC
3
OUTPUT
B
GROU
2
LOCKOUT
OUTPUT
A
CT
as
GND
SYNC
3
RT
6
RT
omy
6
OUTPUTA
DISCHARGE
7
14
DISCHARGE
«=
7
SHUTDOWN
CT
5
OUTPUT
B
SOFT
START
==
8
COMPENSATION
=
mu
OUTPUT
COMPENSATION
9
STAGE
INV. INPUT 1
V REF
NA. INPUT 2
SOFT-START 8
SHUTDOWN 10 5.0k
Figure 6-4 Pulse-Width Modulator
©
November
1994
Physio-Control
Corporati
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Reserved