LT3470
TYPICAL PERFOR A CE CHARACTERISTICS
Top and Bottom Switch Current
Limits (V
FB
= 0V) vs Temperature
400
350
40
50
CURRENT LIMIT (mA)
300
V
IN
CURRENT (µA)
BIAS CURRENT (µA)
250
200
150
100
50
0
– 50 – 25
0
50
75
25
TEMPERATURE (°C)
100
125
SHDN Bias Current
vs Temperature
9
8
V
SHDN
= 36V
7
40
50
SHDN CURRENT (µA)
FB CURRENT (nA)
6
5
4
3
2
1
0
–50
–25
V
SHDN
= 2.5V
FB CURRENT (µA)
0
25
50
75
TEMPERATURE (°C)
Switch V
CESAT
(I
SW
= 100mA)
vs Temperature
300
250
SWITCH V
CESAT
(mV)
SCHOTTKY V
F
(V)
200
150
100
50
0
–50 –25
0.5
0.4
0.3
0.2
0.1
SCHOTTKY V
F
(V)
50
25
75
0
TEMPERATURE (°C)
4
U W
3470 G04
V
IN
Quiescent Current
vs Temperature
30
25
BIAS < 3V
30
BIAS Quiescent Current
(Bias > 3V) vs Temperature
20
15
10
5
0
–50 –25
20
BIAS > 3V
10
0
–50 –25
50
25
0
75
TEMPERATURE (°C)
100
125
50
25
75
0
TEMPERATURE (°C)
100
125
3470 G05
3470 G06
FB Bias Current (V
FB
= 1V)
vs Temperature
120
100
80
60
40
20
FB Bias Current (V
FB
= 0V)
vs Temperature
30
20
10
100
125
0
–50 –25
50
25
0
75
TEMPERATURE (°C)
100
125
0
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
3470 G07
3470 G08
3470 G09
Boost Diode V
F
(I
F
= 50mA)
vs Temperature
0.8
0.7
0.6
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Catch Diode V
F
(I
F
= 100mA)
vs Temperature
100
125
0
– 50 – 25
0
50
75
25
TEMPERATURE (°C)
100
125
0
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
3470 G10
3470 G11
3470 G12
3470f
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
