Datasheet

LTC2930
10
2930fa
APPLICATIONS INFORMATION
Figure 5. OR-ed System Reset
LTC2930
1V
0.9V
–5.2V
1.8V
3.3V
5V
C
RT
47nF
MR
RST
VREF
VPG
GND CRT
V1
V2
V3
V4
V5
V6
121k
1%
R1A
16.2k
1%
R2A
86.6k
1%
100k
1%
10k**
10k
100k
1%
487k
1%
86.6k
1%
68.1k
1%
0.1μF
LTC2930
6V
8V
12V
3V
5V
2930 F05
C
RT
47nF
MANUAL RESET
PUSHBUTTON
t
RST
= 94ms
**OPTIONAL FOR EXTENDED ESD TOLERANCE
MR
RST RESET
VREF
VPG
GND CRT
V1
V2
V3
V4
V5
V6
100k
1%
R1B
40.2k
1%
R2B
59k
1%
100k
1%
100k
1%
2150k
1%
1400k
1%
1020k
1%
0.1μF
Figure 6. Using a Pushbutton On/Off Controller with the LTC2930
SYSTEM RESET
LTC2930
12V (9.6V THRESHOLD)
2.5V
–5.2V
1.8V
3.3V
5V
2930 F06
365k
1%
487k
1%
5V
t
RST
= 9.4ms
4.7nF
0.1μF
RST
MR
VPG GNDCRT
V1
V2
V3
V4
V5
V6
VREF
SYSTEM
LOGIC
LT3028
V
IN
3.3V
V
OUT
SHDN
LTM4600
V
IN
V
OUT
RUN
LT3028
V
IN
1.8V
V
OUT
SHDN
LTC3704
V
IN
–5.2V
V
OUT
RUN/UVLO
LT3028
V
IN
2.5V
V
OUT
SHDN
10k
100k
1%
121k
1%
1500k
1%
100k
1%
R1
16.2k
1%
R2
86.6k
1%
LTC2950-1
V
IN
INT
PB
KILL
EN
10k