U6032B_05 ATMEL [ATMEL Corporation], U6032B_05 Datasheet - Page 5

• Manufacturer Part Number: U6032B_05
• Description: Automotive Toggle Switch IC
• Manufacturer: ATMEL [ATMEL Corporation]

4.3
4.4
4.5
4.6
4.7
4771B–AUTO–11/05
Relay-control Output
Interference Voltages and Load Dump
Power-on Reset
Relay-control Output Behavior, Pin 2
Toggle Input, Pin 5
The relay-control output is an open-collector Darlington circuit with an integrated 23-V Z-diode
for limiting the inductive cut-off pulse of the relay coil. The maximum static collector current must
not exceed 300 mA and the saturation voltage is typically 1.1 V at 200 mA.
The lC supply is protected by R
by a series resistor, integrated Z-diode and RF capacitor (refer to
The relay-control output is protected by the integrated 23 V Z-diode in case of short interference
peaks. It is switched to conductive condition for a battery voltage greater than 40 V in case of
load dump. The output transistor is dimensioned so that it can withstand the generated current.
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.
The time functions (relay output) can be started or interrupted by the three inputs ON, OFF or
TOGGLE (pins 3, 4 and 5, input circuit of these pins see
The relay becomes active if the time function is triggered, and the relay contact is interrupted
after the elapse of the delay time, t
When the push-button (TOGGLE) switch, S
active after the debounce time, t
Repeated operation of S
Each operation of the toggle switch, S
the debounce time, td, is exceeded, i.e., the TOGGLE function.
If the relay output is not disabled by pressing the switch S
Figure 4-3.
TOGGLE Function
1
V
causes the interruption of the relay contact, thus disabling the relay.
Batt
1
3
, C
, i.e., the relay output, pin 2, is active.
d
. There are two input possibilities.
1
47 µF/
16 V
, and an integrated Z-diode, while the inputs are protected
C
1
1
R
, changes (alters) the condition of the relay output when
1
1
8
510
1
, is pressed for the first time, the relay becomes
7
U6032B
2
R
C
2
2
6
3
Figure 4-4 on page
1
, the output stays active.
5
4
S
20 k
1
Figure 4-4 on page
6).
U6032B
6).
5