LT3484-0 Datasheet, PDF (4/12 Pages) Linear Technology – Photoflash Capacitor Chargers

LT3484-0/LT3484-1/LT3484-2
TYPICAL PERFOR A CE CHARACTERISTICS LT3484-0 curves use the circuit of Figure 6,
LT3484-1 curves use the circuit of Figure 7 and LT3484-2 use the circuit of Figure 8, T_A = 25°C unless otherwise noted.
LT3484-0 Switch Current Limit
1.5
LT3484-1 Switch Current Limit
0.70
LT3484-2 Switch Current Limit
1.00
0.66
0.96
1.4
0.62
0.92
1.3
0.58
0.88
1.2
0.54
0.84
1.1
– 40 – 20
0 20 40 60
TEMPERATURE (°C)
80 100
3484 G10
0.50
– 40 – 20
0 20 40 60
TEMPERATURE (°C)
80 100
3484 G11
0.80
– 40 – 20
0 20 40 60
TEMPERATURE (°C)
80 100
3484 G12
LT3484-0 Input Current
800
V_IN = 2.4
V_IN = 3.6
V_IN = 4.2
600
LT3484-1 Input Current
400
V_IN = 2.4
V_IN = 3.6
V_IN = 4.2
300
LT3484-2 Input Current
600
V_IN = 2.4
V_IN = 3.6
V_IN = 4.2
450
400
200
300
200
100
150
0
0 50 100 150 200 250 300
V_OUT (V)
3484 G13
LT3484-0 Efficiency
90
85
80
75
70
65
60
55
50
45
40
50 100 150 200
V_OUT (V)
V_IN = 2.4
V_IN = 3.6
V_IN = 4.2
250 300
3484 G16
4
0
0 50 100 150 200 250 300
V_OUT (V)
3484 G14
LT3484-1 Efficiency
90
85
80
75
70
65
60
55
50
45
40
50
100 150 200
V_OUT (V)
V_IN = 2.4
V_IN = 3.6
V_IN = 4.2
250 300
3484 G17
0
0 50 100 150 200 250 300
V_OUT (V)
3484 G15
LT3484-2 Efficiency
90
85
80
75
70
65
60
55
50
45
40
50
100 150 200
V_OUT (V)
V_IN = 2.4
V_IN = 3.6
V_IN = 4.2
250 300
3484 G18
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