Datasheet

4
LT3433
3433f
TEMPERATURE (°C)
–50
OSCILLATOR FREQUENCY (kHz)
210
205
200
195
190
050
3433 G06
100 125
V
FB
(V)
0
OSCILLATOR FREQUENCY (kHz)
100
150
0.8
3433 G07
50
0
0.2
0.4
0.6
1.0
200
T
A
= 25°C
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Error Amp Reference
vs Temperature
Switch Current Limit vs V
FB
TEMPERATURE (°C)
–50
1.228
1.229
ERROR AMP REFERENCE (V)
1.230
1.231
1.232
050
3433 G04
100 125
V
FB
(V)
0
SWITCH CURRENT LIMIT (mA)
500
600
0.8
3433 G05
400
300
0.2
0.4
0.6
1.0
700
T
A
= 25°C
Oscillator Frequency
vs Temperature
Oscillator Frequency vs V
FB
TEMPERATURE (°C)
50 –25
0.5
CURRENT LIMIT (A)
0.7
1.0
0
50
75
3433 G08
0.6
0.9
0.8
25
100
125
W/C LOW
W/C HIGH
TYPICAL
Current Limit vs Temperature
Maximum Boost Supply Switch
Drive Current vs Boost Supply
Voltage
V
BST
– V
SW_H
(V)
4
I
BST
/I
SW
(mA/A)
60
65
70
79 12
3433 G09
55
50
45
56
8
10 11
T
A
= 25°C
Maximum Output Supply Switch
Drive Current vs Output Supply
Voltage
V
OUT
(V)
4
I
VOUT
/I
SW
(mA/A)
60
65
70
79 12
3433 G10
55
50
45
56
8
10 11
T
A
= 25°C
Soft-Start Current vs Temperature
TEMPERATURE (°C)
I
SS
(µA)
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3433 G03
–50 0 50 100 125