U6046B-MFPG3 Atmel, U6046B-MFPG3 Datasheet - Page 4

• Manufacturer Part Number: U6046B-MFPG3
• Description: IC TIMER DELAY REAR WINDOW 8SOIC
• Manufacturer: Atmel
• Type: Timer Controlr

Specifications of U6046B-MFPG3

• Frequency: Adjustable/Selectable
• Voltage - Supply: 6 V ~ 24 V
• Current - Supply: 1.3mA
• Operating Temperature: -40°C ~ 125°C
• Package / Case: SO-8
• Function: Heating Timer
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Package Type: SOIC
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Count: -
• Lead Free Status / Rohs Status: Not Compliant

3.2
3.3
3.4
3.5
4
Oscillator (Pin 6)
Relay Control Output (OUT)
Interference Voltages and Load-dump
Power-on Reset
U6046B
The external components R
charged by R
A stable oscillator frequency with minimal influence of the temperature coefficient of the inte-
grated resistor is achieved with R
Oscillator frequency, f, is calculated as follows:
where
t
t
α
α
α
The debounce time, t
Table 6-1 on page 9
kHz.
The relay control output is an open-collector Darlington circuit with an integrated 23-V Z-diode to
limit the inductive cut-off pulse of the relay coil. The maximum static collector current must not
exceed 300 mA and saturation voltage is typically 1.1V at 200 mA.
The lC supply is protected by R
by a series resistor, integrated Z-diode and RF capacitor (see
The relay control output is protected via the integrated 23-V Z-diode in the case of short interfer-
ence peaks. It is switched to a conductive condition for a battery voltage of greater than
approximate 40V in the case of a load-dump. The output transistor is dimensioned so that it can
withstand the current produced.
When the operating voltage is switched on, an internal power-on reset pulse (POR) is generated
which sets the logic of the circuits to a defined initial condition. The relay output is disabled.
f
t
t
1
2
3
d
1
1
1
=
= charge time = α
= discharge time = α
and α
= 0.833 and α
= 0.746 and α
=
=
-------------- -
t
1
6
73728
1
+
×
t
2
2
1
-- -
f
are constants as such
×
1
-- -
f
2
and discharged by an integrated 2-kΩ resistor.
2
2
= 1.284 when C
= 1.551 when C
1
shows relationships between t
× R
3
, and the delay time, t
2
× 2 kΩ × C
2
× C
2
and C
2
1
, C
2
2
2
>> 2 kΩ.
= 10 nF to 4700 nF
2
= 470 pF to 10 nF
1
, and an integrated Z-diode, while the inputs are protected
2
determine the oscillator frequency. The capacitor C
d
, depend on the oscillator frequency, f, as follows:
3
, t
d
, C
2
, R
2
Figure 3-6 on page
and frequencies from 1 Hz to 20
4674B–AUTO–09/05
7).
2
is