Read Sharp 15FS-25H (serv.man15) Service Manual online
15JF-25H
24
TEA1507 (IC701)
Block Diagram
Block Diagram
th
SUPPLY
MANAGEMENT
internal
supply
UVLO
start
M-level
VCC
1
2
3
GND
S1
CTRL
FREQUENCY
CONTROL
VOLTAGE
CONTROLLED
OSCILLATOR
LOGIC
LOGIC
OVER-
VOLTAGE
PROTECTION
OVERPOWER
PROTECTION
PROTECTION
short
winding
soft
start
S2
OVER-
TEMPERATURE
PROTECTION
S
Q
R
UVLO
Q
MAXIMUM
ON-TIME
PROTECTION
POWER-ON
RESET
−
1
VALLEY
TEA1507
100 mV
clamp
DRIVER
START-UP
CURRENT SOURCE
0.75 V
0.5 V
5
Isense
6
DRIVER
4
DEM
8
DRAIN
7
HVS
n.c.
n.c.
OCP
LEB
blank
Iss
2.5 V
burst
detect
detect
SYMBOL PIN
DESCRIPTION
V
CC
1
supply voltage
GND
2
ground
CTRL
3
control input
DEM
4
input from auxiliary winding for
demagnetization timing, OVP and OPP
demagnetization timing, OVP and OPP
I
sense
5
programmable current sense input
DRIVER
6
gate driver output
HVS
7
high voltage safety spacer, not
connected
connected
DRAIN
8
drain of external MOS switch, input for
start-up current and valley sensing
start-up current and valley sensing
handbook, halfpage
MGU231
TEA1507
1
2
3
4
VCC
GND
CTRL
DEM
DRAIN
HVS
DRIVER
Isense
8
7
6
5
Pin configuration.
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