HT7704 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT7704 Datasheet PDF : 7 Pages
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Block Diagram
HT7704
Pad Coordinates
Pad No.
1
2
3
4
5
6
X
–563.75
–557.25
–563.75
–198.25
171.25
604.75
Unit: µm
Y
373
166
–91
–544
–544
–297
Pad No.
7
8
9
10
11
X
604.75
594.25
595.25
–308.25
–641.75
Y
–122
230.5
544.5
573.5
573.5
Pin Description
Pin No.
Pin Name
I/O
Internal
Connection
Description
1
OSC
I
∗
Oscillator input
2
ZC
I
CMOS Line frequency 50Hz or 60Hz input for zero crossing
3
VDD
I
—
Power supply (positive)
4
SENSE
I
∗
Touch sense input
5
FB
I
∗
Feedback signal to control the sink current of the
SENSE pin.
6
FSEL
For 50Hz or 60Hz AC signal selection input
It is connected to VSS when the AC line is 50Hz.
I
CMOS However, when the AC line is 60Hz, it is connected to
VDD. Refer to the application circuit for connection
details.
7
VSS
I
—
Power supply (negative)
Trigger output to drive the TRIAC
8
TRIG1
O
CMOS Low pulse output with a capacitor and resistors for
applications
2
27th Dec ’96
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