Thick Film Hybrid IC
INCHANGE
STK73902
Self-excitation Type Feedback Control
Switching Regulator
Features
﹒Power
MOSFET devices
﹒Feedback
control for high output voltage precision
﹒Driver
circuit on-chip
﹒Overcurrent
protection circuit on-chip
﹒Pin
compatible with all other devices in the same
series of devices with 110 to 280W power ratings
﹒Higher
oscillator frequency allows the use of
smaller pulse transformers
Package Dimensions
unit:mm
Applications
﹒CRT/CTV
power supplies
﹒Office
automation equipment power supplies
Block Diagram
Pin Functions
(1)
(2)
(3)
(4)
(5)
(6)
Amplifier circuit control
Ground
TR1 gate
Drive voltage input
Starting voltage input
OCP setting level input
(7) OCP input-voltage dependency
detection input
(8) TR1 source
(9) TR1 source
(11) TR1 drain
(12) TR1 drain
Thick Film Hybrid IC
Specifications
INCHANGE
Maximum Ratings
at Ta=25℃, Tc=25℃ unless otherwise specified
Parameter
Operating substrate temperature
AC input voltage
Operating temperature
Storage temperature
Maximum output power
(TR1)
Drain current
Pulse drain current
Drain reverse current
Gate-source voltage
Allowable power dissipation
Chip junction temperature
(ZD1)
Allowable power dissipation
Chip junction temperature
P
ZD1
Tj(ZD1)max
500
125
mW
℃
Symbol
T
C
max
V
AC
Topr
Tstg
Wo max
Specified test circuit V
O
=135V
Conditions
Recommended value is 105℃
Specified test circuit
Ratings
115
140
-10 to+85
-30 to+115
180
UNIT
℃
Vrms
℃
℃
W
I
D
I
D(Pulse)
I
DR
V
GSS
P
D
Tj max
10
35
10
±30
100
150
A
A
A
V
W
℃
Recommended operating ranges
at Ta=25℃
Parameter
Pin 4 input voltage
Oscillator frequency
Symbol
V
4
f
OSC
Conditions
Ratings
±8
to±24
20 to 100
UNIT
V
kHz
Operating characteristics
at Ta=25℃,Tc=25℃
( unless otherwise specified,specified test circuits)
Parameter
(TR1)
Drain-source breakdown voltage
Gate-source cutoff voltage
ON resistance
Input capacitance
(ZD1)
Zener voltage
V
Z
I
Z
=5mA
23.7
26.3
V
V
(BR)DSS
V
GS(off)
R
DS(on)
Ciss
I
D
=1mA,V
GS
=0V
I
D
=1mA,V
DS
=10V
I
D
=5A,V
GS
=10V
V
DS
=25V,V
GS
=0V,f=1MHz
500
2.5
3.5
0.6
1400
5.0
0.9
V
V
Ω
pF
Symbol
Conditions
min
Typ
max
UNIT
Thick Film Hybrid IC
Series organization
These devices form a series with varying output power ratings
Type No.
STK73902
STK73903
STK73904
STK73905
STK73906
STK73907
STK73908
STK73909
900
-30 to
+115
+115
+150
500
V
DSS
[V]
Tstg
[℃]
Maximum ratings
T
C
max Tj max
[℃]
[℃]
I
D
[A]
6.0
10.0
12.0
15.0
3.0
5.0
6.0
8.0
170 to 264
85 to 132
INCHANGE
Operating characteristics
ON resistance
Input voltage Output power
[V]
[W]
[Ω]
110
180
210
280
110
180
210
280
1.4
0.6
0.55
0.3
5.0
3.0
2.0
1.2
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