Datasheet

LTC2952
8
2952fb
TYPICAL PERFORMANCE CHARACTERISTICS
I
IN-OFF
vs Input Supply Voltage at
Different Temperatures
I
IN-ON
vs Input Supply Voltage at
Different Temperatures
V2 Preferential Threshold
vs Temperature
Worst Case Supply to Supply
Leakage vs Temperature
ONT/OFFT Pull-Up/Pull-Down
Current vs Temperature
INPUT SUPPLY VOLTAGE V
IN
(V)
05
10
I
IN_OFF
(μA)
20
50
10 20 25
2952 G01
40
30
15 30
130°C
90°C
25°C
–60°C
–45°C
V1 = V
IN
, V2 = 0, VS = OPEN OR
V2 = V
IN
, V1 = 0,VS = OPEN
M1 = OPEN, M2 = 0V
INPUT SUPPLY VOLTAGE V
IN
(V)
05
40
I
IN_ON
(μA)
60
110
10 20 25
2952 G02
90
80
50
100
70
15 30
130°C
90°C
–45°C
25°C
–60°C
V1 = VS = V
IN
, V2 = 0V OR
V2 = VS = V
IN
, V1 = 0V
TEMPERATURE (°C)
–50 –25
3.0
V2
PREF_TH
(V)
3.2
3.1
3.5
0 25 75 100
2952 G03
3.4
3.3
50 125
V1 = 28V, VS = OPEN
2952 G04
TEMPERATURE (°C)
–50
1
I
LEAK
(nA)
10
100
1000
–25 0 25 50 75 100 125
V2 = VS = 0V, V1 = 28V
V1 = VS = 0V, V2 = 28V
V1 = V2 = 0V, VS = 28V
PB Current vs PB Voltage
–10 –5
–120
–80
–60
–?40
–20
0
20
–100
01052025
2952 G05
15 30
V1 = V2 = VS = 28V
PB VOLTAGE (V)
I
PB
(μA)
–50 –25
1.6
1.8
2.0
2.2
2.4
25
0
75 100
2952 G06
50 125
TEMPERATURE (°C)
I
ONT, OFFT
(μA)
Total Turn-On/Turn-Off Time vs
ONT/OFFT Capacitors Value
C
ONT
/C
OFFT
(nF)
100
t
DB, ON/OFF
+ t
ONT,
OFFT
(ms)
1000
0.1 10 100 1000
2952 G07
10
1
10000
KILL, PFI, M1 and M2 Falling Input
Threshold Voltage vs Temperature
–50 –25
0.492
0.496
0.494
0.498
0.500
0.504
0.502
0.506
0.508
25
0
75 100
2952 G08
50 125
TEMPERATURE (°C)
V
TH
(V)
VM Input Reset Threshold Voltage
vs Temperature
–50 –25
0.492
0.496
0.494
0.498
0.500
0.504
0.502
0.506
0.508
25
0
75 100
2952 G09
50 125
TEMPERATURE (°C)
V
TH_VM
(V)
T
A
= 25°C, unless otherwise noted.