Datasheet

LT3467/LT3467A
4
3467afe
TYPICAL PERFORMANCE CHARACTERISTICS
Current Limit vs Duty Cycle
Switch Saturation Voltage
vs Switch Current
Oscillator Frequency
vs Temperature
Soft-Start Current
vs Soft-Start Voltage
Peak Switch Current
vs Soft-Start Voltage
Start-Up Waveform
(Figure 2 Circuit)
Quiescent Current vs Temperature FB Pin Voltage vs Temperature SHDN Current vs SHDN Voltage
I
Q
(mA)
TEMPERATURE (°C)
–40 95 110
3467 G01
5–10 50
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–25 3520 65 80 125
V
FB
(V)
TEMPERATURE (°C)
–40 95 110
3467 G02
5–10 50
1.26
1.25
1.24
1.23
1.22
1.21
1.20
–25 3520 65 80 125
V
SHDN
(V)
0
I
SHDN
(μA)
8
140
120
100
80
60
40
20
0
3467 G03
41612
2
10
61814
T
A
= 25°C
DC (%)
10
I
LIM
(A)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
30
50
60
3467 G04
20 40
70
80
90
TYPICAL
GUARANTEED
T
A
= 25°C
V
CESAT
100mV/DIV
SW CURRENT 200mA/DIV
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
3467 G05
TEMPERATURE (°C)
–50
OSCILLATOR FREQUENCY (MHz)
100
3467 G06
050–25 25 75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
LT3467A
LT3467
V
SS
(mV)
0 50 150 250 350 450
I
SS
(μA)
6
5
4
3
2
1
0
100 200 300 400
3467 G07
500
T
A
= 25°C
V
SS
(mV)
0 50 150 250 350 450
SWITCH CURRENT (A)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
100 200 300 400
3467 G08
500
T
A
= 25°C
V
SHDN
2V/DIV
V
OUT
1V/DIV
I
SUPPLY
0.5A/DIV
0.5ms/DIV
3467 G09