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DVD-3910
TOP245Y (AP: IC901)
RN5VD15AA (IE: IC203)
BD4730G (SY: IC201, 235) RN5VD30AA (IE: IC206)
Tab Internally
Connected to
SOURCE Pin
1 C
3 X
2 L
5 F
4 S
7 D
SHUTDOWN/
AUTO-RESTART
PWM
COMPARATOR
CLOCK
SAW
HALF
FREQ.
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
5.8 V
4.8 V
SOURCE (S)
S
R
Q
DMAX
STOP SOFT-
START
-
+
CONTROL (C)
LINE-SENSE (L)
EXTERNAL
CURRENT LIMIT (X)
FREQUENCY (F)
-
+
5.8 V
1 V
IFB
RE
ZC
VC
+
-
LEADING
EDGE
BLANKING
÷
8
1
HYSTERETIC
THERMAL
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN (D)
ON/OFF
SOFT
START
DCMAX
VBG
DCMAX
VBG + VT
0
OV/UV
VI (LIMIT)
CURRENT
LIMIT
ADJUST
LINE
SENSE
SOFT START
LIGHT LOAD
FREQUENCY
REDUCTION
STOP LOGIC
OSCILLATOR WITH JITTER
(mark side)
5
4
3
2
1
Vref
2
1
3
5
V
DD
C
D
GND
OUT
R
D
Block Diagram
GND
V
DD
OUT
NC
C
D
5
4
1
2
3
TOP
VIEW
µ
COM RESET
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