LT3493E-3 Ver la hoja de datos (PDF) - Linear Technology
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LT3493E-3 Datasheet PDF : 20 Pages
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LT3493-3
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise noted.
Maximum Load Current,
VOUT = 5V, L = 8.2µH
1.60
1.50
TYPICAL
1.40
1.30
1.20
MINIMUM
1.10
1.00
0.90
8
12 16 20 24 28
VIN (V)
3493-3 G04
Maximum Load Current,
VOUT = 3.3V, L = 10µH
1.60
1.50
TYPICAL
1.40
1.30
MINIMUM
1.20
1.10
1.00
0.90
5
10
15
20
25
30
VIN (V)
3493-3 G21
Maximum Load Current,
VOUT = 5V, L = 33µH
1.60
1.50
TYPICAL
1.40
1.30
1.20
MINIMUM
1.10
1.00
0.90
8
12 16 20 24 28
VIN (V)
3493-3 G22
Maximum Load Current,
VOUT = 3.3V, L = 4.7µH
1.60
1.50
TYPICAL
1.40
1.30
1.20
MINIMUM
1.10
1.00
0.90
5
10
15
20
25
30
VIN (V)
3493-3 G05
Switch Voltage Drop
550
500
450
TA = 85°C
400
TA = 25°C
350
300
250
TA = –40°C
200
150
100
50
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
SWITCH CURRENT (A)
3493-3 G06
Undervoltage Lockout
7.0
6.9
6.8
6.7
6.6
6.5
6.4
6.3
6.2
6.1
6.0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
3493-3 G07
Switching Frequency
800
780
760
740
720
700
680
660
640
620
600
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
3493-3 G09
4
Frequency Foldback
800
700
600
500
400
300
200
100
0
0 100 200 300 400 500 600 700 800
FEEDBACK VOLTAGE (mV)
3493-3 G11
Soft-Start
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 0.25 0.50 0.75 1 1.25 1.50 1.75 2
SHDN PIN VOLTAGE (V)
3493-3 G13
3493-3f
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