U6813B ATMEL Corporation, U6813B Datasheet - Page 14

• Manufacturer Part Number: U6813B
• Description: U6813b Fail-safe Ic With High-side And Relay Driver
• Manufacturer: ATMEL Corporation

Figure 9-5.
14
U6813B
Application Circuit
V
Batt
3.3 V
V
CC
Figure 9-4.
RELO
FETO
P-EN
N-EN
N-RES
P-RES
V
CC
V
V
47n
5 V
0 V
5 V
0 V
0 V
0 V
5 V
0 V
5 V
0 V
5 V
0 V
Batt
Batt
Undervoltage Condition
Reset debounce time
3.3V
RELO
<4.5 V
16
1
Sense ground
SGND
GND
15
1st Reset delay
2
Undervoltage condition
VCC
P-RES
14
3
U6813B
Relay in
RELI
N-RES
13
4
To C
From C
> 120 µs
FET in
FETI
P-EN
12
5
Watchdog in
WDI
N-EN
11
6
2nd Reset delay
WDC
10
3 good WDI pulses
VS
7
<120 µs
36k
1k
FETO
CAPI
9
8
<4.5 V
1k
100n
47n
6.8n
2.7M
Don't care
V
Batt
4543B–AUTO–10/05