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LS7340

Features: • Phase-Lock Loop Synchronization allows use in Wall Switch Applications.• PLL accuracy delivers Pure AC Power.• Timer programmable with external R-C.• ONinput switches AC Power On and starts Timer.• OFF input switches AC Power Off.• 50/60Hz Line Frequ...

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SeekIC No. : 004399983 Detail

LS7340: Features: • Phase-Lock Loop Synchronization allows use in Wall Switch Applications.• PLL accuracy delivers Pure AC Power.• Timer programmable with external R-C.• ONinput swit...

LS7340 Data Sheet

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Part Number:
LS7340
Supply Ability:
5000

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  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Phase-Lock Loop Synchronization allows use in Wall Switch Applications.
• PLL accuracy delivers Pure AC Power.
• Timer programmable with external R-C.
• ONinput switches AC Power On and starts Timer.
• OFF input switches AC Power Off.
• 50/60Hz Line Frequency.
• +12V to +18V Operation (VSS - VDD).
• LS7339, LS7340 ( DIP) - See Figure 1 LS7339-S, LS7340-S (SOIC)


Application

• AUTO SHUT-OFF TIMER for appliances such as coffee pots, curling irons, hair curlers, electric blankets, hand dryers.
• TIMED-ON WALL SWITCH for incandescent lighting and heat lamps.


Pinout

Connection Diagram


Specifications

PARAMETER

SYMBOL

VALUE

UNIT

DC supply voltage

Vss - VDD

+20

V

Any input voltage

VIN

VSS-20 to VSS + .5

V

Operating temperature

TA

0 to +85

Storage temperature

TSTG

-65 to +150




Description

The LS7339 and LS7340 are monolithic MOS integrated circuits designed to turn a triac On and Off in a Power Switch for AC loads. Activation OFFthe ON input will always turn the triac On and start a Timer.

The triac remains On for the duration of the Timer which is controlled by an external R-C connected to the OSCILLATOR input. Activation of the OFF input will always turn the triac OFF. The two ICs differ only in the width of theTRIGpulse used to trigger the triac. (See I/O Description, Pin 4.)


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