U6032B-FP ATMEL Corporation, U6032B-FP Datasheet - Page 5

• Manufacturer Part Number: U6032B-FP
• Description: AUTOMOTIVE TOGGLE SWITCH IC
• Manufacturer: ATMEL Corporation

Relay-control Output
Interference Voltages
and Load Dump
Power-on Reset
Relay-control Output
Behavior, Pin 2
Toggle Input, Pin 5
4771A–AUTO–11/03
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
protected by a series resistor, integrated Z-diode and RF capacitor (refer to Figure 6 on
page 6).
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 with-
stand 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 out-
put 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 Figure 6 on page 6).
The relay becomes active if the time function is triggered, and the relay contact is inter-
rupted after the elapse of the delay time, t
When the push-button (TOGGLE) switch, S
becomes active after the debounce time, t
Repeated operation of S
relay. Each operation of the toggle switch, S
output when the debounce time, td, is exceeded, i.e., the TOGGLE function.
If the relay output is not disabled by pressing the switch S
Figure 5. TOGGLE Function
V
Batt
1
causes the interruption of the relay contact, thus disabling the
47 µF/
16 V
1
C
, C
1
R
1
1
, and an integrated Z-diode, while the inputs are
1
8
510
d
3
. There are two input possibilities.
, i.e., the relay output, pin 2, is active.
1
7
U6032B
2
, changes (alters) the condition of the relay
1
, is pressed for the first time, the relay
R
C
2
2
6
3
5
4
1
, the output stays active.
S
20 k
1
U6032B
5