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4-7-4 Pins description
pin
1
Overcurrent / feedback
2
3
4
5
4-7-5 Control part electrical characteristics
description
Operation start voltage
Operation stop voltage
Circuit current in operation
Circuit current in non-operation
Maximum OFF time
Minimum time for input of quaxi
resonant signals
Minimum off time
O.C.P./F.B. terminal threshold
voltage 1
O.C.P./F.B. terminal threshold
voltage 2
O.C.P./F.B. terminal extraction
current
O.V.P. operation voltage
Latch circuit sustaining voltage
Latch circuit release voltage
Thermal shutdown operating
temperature
4-7-6 MOSFET electrical characteristics
description
Drain-to-source breakdown voltage
Drain leakage current
On-resistance
Switching time
Thermal resistance
name
O.C.P./ F.B.
Source
Drain
Supply
Ground
IC pins
number
4-5
4-5
4-5
4-5
-
1-5
-
1-5
1-5
1-2
4-5
4-5
4-5
-
IC pins
number
3-2
3-2
3-2
3-2
-
Service manual CP-785A
symbol
description
Input of overcurrent detection signal and
feedback signal
S
MOSFET source
D
MOSFET drain
V
Input of power supply for control circuit
IN
GND
Ground
symbol
min.
V
(on)
14.4
IN
V
(off)
9
IN
I
(on)
-
IN
I
(off)
-
IN
45
max)
T
(
OFF
T
(2)
-
TH
T
(min)
-
OFF
V
(1)
0.68
TH
V
(2)
1.3
TH
I
1.2
OCP/FB
V
(OVP)
20.5
IN
I
(H)
-
IN
V
(La.off)
6.6
IN
T
(TSD)
140
J
symbol
min.
V
650
DSS
I
-
DSS
R
(on)
-
DS
tf
-
θ
-
CH -F
- 28 -
rating
typ.
max.
16
17.6
10
11
-
30
-
100
-
55
-
1.0
-
1.5
0.73
0.78
1.45
1.6
1.35
1.5
22.5
24.5
-
400
-
8.4
-
-
rating
typ.
max.
-
-
-
300
-
1.15
-
250
-
0.95
unit
V
V
mA
µA
µsec
µsec
µsec
V
V
mA
V
µA
V
0
C
unit
V
µA
Ω
nsec
0
C/W
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