Datasheet

LTC2919
14
2919f
V
CC
ADJ1
LTC2919-2.5
REF
ADJ2
RST
SEL
R
PU1
10k
R
PU2
10k
R
PU5
10k
R
PU3
10k
R
PU4
10k
R
N2A
137k
15V
5V
–5V
–15V
3.3V
2.5V
R
N1A
13.3k
R
N2B
309k
R
N1B
10.7k
R
P2A
115k
R
P1A
13.7k
R
P2B
309k
R
P1B
11.5k
C
TMR2
2.2nF
C
BYP1
100nF
C
TMR1
2.2nF
C
BYP2
100nF
OUT1
GND
V
CC
ADJ1
LTC2919-3.3
REF
ADJ2
2919 TA02
OUT1
–5V_OK
–15V_OK
5V_OK
15V_OK
TMR OUT2 TMROUT2
GND
SYSTEM
SYSTEM_OK
RST
SEL
Six Supply Undervoltage Monitor with 2.5V Reset Output and 20ms Timeout
TYPICAL APPLICATIO S
U
±12V UV Monitor Powered from
12V, 20ms Timeout (1.8V Logic Out)
48V Telecom UV/OV Monitor with Hysteresis
V
CC
ADJ1
LTC2919-2.5
1.8V
REF
ADJ2
RST
OUT1
R
N1
10.7k
R
PU3
10k
C
TMR
2.2nF
2919 TA01b
R
P2
1.07M
R
PU1
10k
R
PU2
10k
12V
–12V
R
P1
49.9k
*OPTIONAL FOR ESD
MANUAL
RESET
PUSHBUTTON
C
BYP
100nF
R
N2
249k
10k*
R
CC
10k
OUT2
SEL TMR
GND
–12V_OK
12V_OK
V
CC
ADJ1
LTC2919-2.5
SEL
R
P1B2
681k
ADJ2
RST
OUT1
TMR
REF
OUT2
M1
GND
R
P1B
13.7k
R
P1A
18.7k
R
P2A2
169k
V
UV(RISING)
: 43.3V
V
UV(FALLING)
: 38.7V
V
OV(RISING)
: 71.6V
V
OV(FALLING)
: 70.2V
R
P2A
1.43M
V
IN
36V TO 72V
R
P2B
1.91M
R
CC
27k
0.25W
C
BYP
100nF
5V
R
PU3
10k
2919 TA03
M1, M2: FDG6301N OR SIMILAR
M2
R
PU1
10k
R
PU2
10k
SYSTEM
OV
UV
PWRGD