LTC3452
TYPICAL PERFOR A CE CHARACTERISTICS
Undervoltage Lockout Threshold
Shutdown Current vs Temperature
Shutdown Current vs V IN
vs Temperature
20
12
T A = 25 ° C
2.5
18
16
14
10
8
2.3
12
10
8
6
V IN = 5.5V
V IN = 4.2V
6
4
2.1
1.9
V IN FALLING
V IN RISING
4
2
V IN = 2.7V
V IN = 3.6V
2
1.7
0
–55 –35 –15
5
25
45
65
85 105 125
0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
1.5
–55 –35 –15
5
25
45
65
85 105 125
TEMPERATURE ( ° C)
3452 G01
Enable Thresholds vs Temperature
V IN (V)
Enable Thresholds vs V IN
3452 G02
TEMPERATURE ( ° C)
I SETL,H Servo Voltage
vs Temperature
3452 G03
1200
1100
1000
900
V IN = 3.6V
1000
900
800
T A = 25 ° C
812
808
804
V IN = 3.6V
R ISETL = 10.2k
R ISETH = 4.99k
800
700
800
700
600
V IH
796
600
500
400
V IL
V IH
500
400
V IL
792
788
300
300
784
200
–55 –35 –15
5
25
45
65
85 105 125
200
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
780
–55 –35 –15
5
25
45
65
85 105 125
TEMPERATURE ( ° C)
3452 G04
I SETL,H Servo Voltage vs V IN
V IN (V)
3452 G05
Maximum Regulated V OUT
vs Temperature
TEMPERATURE ( ° C)
3452 G06
812
808
804
T A = 25 ° C
4.60
4.58
4.56
V IN = 3.6V
4.54
800
796
792
4.52
4.50
4.48
4.46
788
4.44
784
780
4.42
4.40
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
–55 –35 –15
5
25
45
65
85 105 125
V IN (V)
3452 G07
TEMPERATURE ( ° C)
3452 G08
3452f
4
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