Preliminary Information
MH89626C
MH80626C
TOUT
5
6
K1A
D1
D3
1
4
3
2
D2
D4
C1
to other
circuit
Heat sink 9
o
C/W
MH89626C
24
TIP
TF
RF
RING
Do
Di
GS
SDi
21
28
19
F1i
VRef
C2i
20
22
23
Test
Out
Test
In
1
T
TF
RF
R
14
12
7
Tip
K3A
K2A
TIN
8
ROUT
20
RIN
RF2
RF1
18
16
K1B
R1
R2
-48V
Q1
8
7
30
31
32
38
+5V
K1 RELAY
36
K2 RELAY
PTC
371
K3 RELAY
34
RF2
RF1
SD7
SD6
SD5
RD1
RD2
Ring
CS
17
LED
SHK
VAC
LGND
5
6
VBat
18
LCA
16
15
K3B
K2B
13
90
VRMS
25Hz
-48V
Components
D1,D2,D3,D4 IN4004
Q1 = FET BUZ 22 or equivalent
R1 = 10k
Ω
+5%
1
/
4
W
R2 = 1k
Ω
+ 5%
1
/
4
W
C1 = 0.01µF + 10% 100V
PTC = 55Ω, 50mA
290V
TISP
-48V
RD3
VRLY
VDD
31
VEE
9
AGND
30
RGND
18
+5V
-5V
Figure 3 - Application Circuit
C2i
F1i
t
PHZ
t
ES
t
ES
Do
t
PZH
t
PZL
t
PLH
t
PHL
Di
t
ISL
t
IH
t
ISH
Figure 4a - Control Timing Diagram
2-295
MITEL [ MITEL NETWORKS CORPORATION ]
