Datasheet

13
LTC2900
2900f
V3
V1
CRT
RST
PBR
V2
V4
V
REF
V
PG
GND
5
MANUAL RESET
BUTTON
(NORMALLY OPEN)
*OPTIONAL RESISTOR RECOMMENDED
TO EXTEND ESD TOLERANCE
C
RT
R
L1
1k
R6
100k
1%
R5
2.15M
1%
3.3V
–5.2V
SYSTEM
RESET
R2
9.53k
1%
R4
121k
1%
R3
487k
1%
R1
93.1k
1%
4
6
7
8
9
10
3
2
1
5V
12V
LED
10k*
V
TRIP
= –4.87V
LTC2900-1
2900 TA05
V
TRIP
= 11.25V
5V, 3.3V, 12V, –5.2V Monitor with Manual Reset and LED Indication on RST
TYPICAL APPLICATIO S
U
Low Voltage Quad Supply Monitor 3.3V, 2.5V, 1V (ADJ), 0.9V (ADJ)
V3
V1
CRT
RST
PBR
V2
V4
V
REF
V
PG
GND
5
C
RT
SYSTEM
RESET
0.9V
V
TRIP
= 0.84V
V
TRIP
= 0.933V
2.5V
R3
68.1k
1%
R2
16.2k
1%
R4
100k
1%
R1
86.6k
1%
4
6
7
8
9
10
3
2
1
3.3V
1V
LTC2900
2900 TA04
R6
100k
1%
R5
86.6k
1%