LT3493EDCB View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3493EDCB Datasheet PDF : 20 Pages
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LT3493
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
SHDN Pin Current
50
45
40
35
30
25
20
15
10
5
0
0 2 4 6 8 10 12 14 16 18 20
VSHDN (V)
3493 G14
Typical Minimum Input Voltage
(VOUT = 5V)
7.5
TO START
7.0
6.5
6.0
TO RUN
5.5
5.0
1
10
100
IOUT (mA)
1000
3493 G15
Typical Minimum Input Voltage
(VOUT = 3.3V)
5.5
5.3
5.1
4.9
TO START
4.7
4.5
4.3
4.1
TO RUN
3.9
3.7
3.5
1
10
100
IOUT (mA)
1000
3493 G16
Switch Current Limit
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3493 G17
Operating Waveforms
Switch Current Limit
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
20
40
60
DUTY CYCLE (%)
80 100
3493 G18
Operating Waveforms,
Discontinuous Mode
VSW
5V/DIV
IL
0.5A/DIV
0
VOUT
20mV/DIV
VIN = 12V
VOUT = 3.3V
IOUT = 0.5A
L = 10μH
COUT = 10μF
1μs/DIV
3493 G19
VSW
5V/DIV
IL
0.5A/DIV
0
VOUT
20mV/DIV
VIN = 12V
VOUT = 3.3V
IOUT = 50mA
L = 10μH
COUT = 10μF
1μs/DIV
3493 G20
3493fb
5
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