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LS7339 Datasheet(PDF) 2 Page - LSI Computer Systems

Part # LS7339
Description  AUTO SHUT-OFF AC POWER SWITCH WITH PROGRAMMABLE TIMER
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7339 Datasheet(HTML) 2 Page - LSI Computer Systems

  LS7339_03 Datasheet HTML 1Page - LSI Computer Systems LS7339_03 Datasheet HTML 2Page - LSI Computer Systems LS7339_03 Datasheet HTML 3Page - LSI Computer Systems LS7339_03 Datasheet HTML 4Page - LSI Computer Systems  
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CAP (Pin 7)
The CAP input is for external component connection for the PLL fil-
ter capacitor. (See Figure 5.)
SYNC (Pin 8)
The AC Line Frequency (50/60Hz) is applied to this input. The
Phase-Lock Loop synchronizes all internal timings to the AC signal
at the SYNC input. (See Figure 5.)
NOTE 1: ON will function as described if OFF is at logic 1.
If OFF is held at logic 0, the transitions at ON will
not cause the output to turn On.
NOTE 2: OFF will function as described if ON is at logic 1.
If ON is held at logic 0, the transitions at OFF
will not cause the the output to turn Off.
Tw
Tw
ø
FIGURE 2. OUTPUT CONDUCTION ANGLE, Ø
SYNC
TRIG
7339-012703-2
ON
OFF
Ø
OFF
TS1
TD1
TS1
TS1
TS1
TS1
TD1
<TD1
OFF
OFF
159˚/STATE 1
159˚/STATE 1
159˚/STATE 1
TD1 RESTART
OFF/STATE 0
FIGURE 3. OUTPUT PHASE ANGLE Ø VS ON AND OFF
DIGITAL
COMPARATOR
ø DECODE
SYNC
PHASE-ANGLE
POINTER
PHASE-
LOCK
LOOP
CONTROL
LOGIC
BUF
BUF
BUF
SYNC
CAP
ON
OFF
V SS
V DD
FIGURE 4. LS7339/7340 BLOCK DIAGRAM
TRIG
OSC/TIMER
OSC
(+V)
(-V)
DRIVER
4
8
7
1
2
6
5
3
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.


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