Datasheet

LT3500
5
3500fc
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown Input Currents
vs Temperature
Shutdown Quiescent Current
vs Temperature Error Amplifi er g
m
vs Temperature
Soft-Start Source Current
vs Temperature
Soft-Start Feedback Offset
vs Temperature
VC Switching Threshold
vs Temperature
TEMPERATURE (°C)
–50
0
CURRENT (µA)
1
2
3
4
050
100
150
3500 G04
5
6
–25 25
75
125
V
SHDN
= 0.7V
V
SHDN
= 0.9V
TEMPERATURE (°C)
–50
0
CURRENT (µA)
2.5
5.0
7.5
10.0
050
100
150
3500 G05
12.5
15.0
–25 25
75
125
TEMPERATURE (°C)
–50
100
TRANSCONDUCTANCE (µmhos)
150
200
250
300
050
100
150
3500 G06
350
400
–25 25
75
125
TEMPERATURE (°C)
–50
1.5
CURRENT (µA)
1.7
2.1
2.3
2.5
3.5
2.9
0
50
75
3500 G07
1.9
3.1
3.3
2.7
–25 25
100
125
150
TEMPERATURE (°C)
–50
50
VOLTAGE (mV)
75
100
125
150
LFB
FB
–25 0 25 50
3500 G08
75 100 125 150
TEMPERATURE (°C)
–50
0.50
VOLTAGE (V)
0.55
0.65
0.70
0.75
50
0.95
3500 G09
0.60
0
–25
75 100
25 150125
0.80
0.85
0.90
Power Good Thresholds
vs Temperature
Power Good Sink Currents
vs Temperature Frequency vs Temperature
TEMPERATURE (°C)
–50
0.65
VOLTAGE (V)
0.66
0.68
0.69
0.70
0.75
0.72
0
50
75
3500 G10
0.67
0.73
0.74
0.71
–25
25
100
150125
RISING EDGE
FALLING EDGE
TEMPERATURE (°C)
–50
0
CURRENT (µA)
100
300
400
500
1000
700
0
50
75
3500 G11
200
800
900
600
PG
PG
–25
25
100
150125
TEMPERATURE (°C)
–50
400
FREQUENCY (kHz)
420
460
480
500
600
540
0
50
75
3500 G12
440
560
580
520
–25
25
100
150125
R
RT/SYNC
= 90.9k