Datasheet

LTC3728L/LTC3728LX
9
3728lxff
Typical perForMance characTerisTics
Current Sense Pin Input Current
vs Temperature
EXTV
CC
Switch Resistance
vs Temperature
Oscillator Frequency
vs Temperature
Undervoltage Lockout
vs Temperature
Shutdown Latch Thresholds
vs Temperature
TEMPERATURE (°C)
–50 –25
25
CURRENT SENSE INPUT CURRENT (µA)
29
35
0
50
75
3728L G26
27
33
31
25
100
125
V
OUT
= 5V
TEMPERATURE (°C)
–50 –25
0
EXTV
CC
SWITCH RESISTANCE (Ω)
4
10
0
50
75
3728L G27
2
8
6
25
100
125
TEMPERATURE (°C)
–50
400
500
700
25 75
3728L G28
300
200
–25 0
50 100 125
100
0
600
FREQUENCY (kHz)
V
PLLFLTR
= 2.4V
V
PLLFLTR
= 1.2V
V
PLLFLTR
= 0V
TEMPERATURE (°C)
–50
UNDERVOLTAGE LOCKOUT (V)
3.40
3.45
3.50
25 75
3728L G29
3.35
3.30
–25 0
50 100 125
3.25
3.20
TEMPERATURE (°C)
–50 –25
0
SHUTDOWN LATCH THRESHOLDS (V)
0.5
1.5
2.0
2.5
75 10050
4.5
3728L G30
1.0
0 25 125
3.0
3.5
4.0
LATCH ARMING
LATCHOFF
THRESHOLD