AN6780 查看數據表（PDF） - Panasonic Corporation
零件编号
产品描述 (功能)
比赛名单
AN6780 Datasheet PDF : 4 Pages
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s Application Circuit
1) Superlow frequency oscillator
AN6780, AN6780S
(2) (4) (6) (8) (9) (11) (12)
12345 67
+
RT
1 to 10µF–
CT
VCC
RL
Pins numbers in ( )
are for the AN6780S
VCR
TO
Output
T1= 32768TO
Oscillation interval TO (S) 0.69RT (Ω) · CT (F)
Output interval TI (S) 22RT (kΩ) · CT (µF)
2) Timer
AN6780, AN6780S
(2) (4) (6) (8) (9) (11) (12)
12345 67
+
RT
1 to 10µF–
CT
RL
VCC
VCR
Reset
Pin numbers in ( ) are for the AN6780S
Reset
(Timer control)
TO
Output
Tt
Tt
=16384TO
Timer interval Tt (S) 11RT (kΩ) · CT (µF)
3) Integrating timer
AN6780, AN6780S
(2) (4) (6) (8) (9) (11) (12)
12345 67
VCC
1 to +
10µF –
RT
CT
RL
VCR
TO
Reset
Stop
Output
T1
T2
TS = T1 + T2 + 16384TO
Integrating timer interval
TS (s) 11RT (kΩ) · CT (µF) + (T1 + T2 + ···)
s Supplementary Descriptions
• Precautions on Use
Obeserve the following in order to prevent destruction
and reliability of the IC during its use.
1) For distribution of the oscillation frequency, take about
17% (IC alone) into account at the time of designing.
When accuracy is requested, use a variable resistor as a
timed resistor to make adjustment.
2) For the timed resistor, use a polyester capacitor with low
tanδ, whose resistance is 1kΩ to 1MΩ and timed capacity
of 0.1µF.
3) The values obtained from the timer interval calcuation
expression, etc. in Application Circuit change depending
on accuracy of the timed capacity in the actual set, etc.
4) Attach a capacity (1 to 10µF) to the Pin1 (2) in order to
protect the IC against noises and stabilize its operation.
5) During normal operation, when you turn on the power
after extremely short period of power-off, note that auto
reset may not be applied due to residual potential of
external capacity.
6) Take a proper countermeasure noises in order to prevent
malfunctioning from being caused by external noises.
Particularly, when setting a long interval, pay attention to
the external noises.
7) When a plunger or relay is connected to the output circuit,
connect diodes to both ends of the coil in order to protect
the IC against counter electromotive power generated
after power-off
(11) 6
Pin numbers in ( ) are for the AN6780S
Integration input
The pin numbers in ( ) are for the AN6780S
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