LT3468 Ver la hoja de datos (PDF) - Linear Technology
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LT3468 Datasheet PDF : 12 Pages
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LT3468/LT3468-1/LT3468-2
TYPICAL PERFOR A CE CHARACTERISTICS LT3468 curves use the circuit of Figure 6, LT3468-1
curves use the circuit of Figure 7 and LT3468-2 use the circuit of Figure 8 unless otherwise noted.
LT3468 Efficiency
90 TA = 25°C
80
VIN = 4.2V
VIN = 2.8V
70
VIN = 3.6V
LT3468-1 Efficiency
90 TA = 25°C
80
VIN = 4.2V
VIN = 2.8V
70
VIN = 3.6V
LT3468-2 Efficiency
90
TA = 25°C
80
VIN = 4.2V
VIN = 2.8V
70
VIN = 3.6V
60
60
60
50
50
50
40
50
100 150 200 250 300
VOUT (V)
3468 G10
40
50
100 150 200 250 300
VOUT (V)
3468 G11
40
50
100 150 200 250 300
VOUT (V)
3468 G12
LT3468 Output Voltage
324
323
TA = –40°C
322
321 TA = 25°C
320
TA = 85°C
319
318
2
3
4
5
6
7
8
VIN (V)
3468 G13
LT3468-1 Output Voltage
324
323
TA = –40°C
322
TA = 25°C
321
TA = 85°C
320
319
318
2
3
4
5
6
7
8
VIN (V)
3468 G14
LT3468-2 Output Voltage
319
318
317
TA = 25°C
316
TA = 85°C
315
TA = –40°C
314
313
312
234
5
6
VIN (V)
78
3468 G15
LT3468 Switch Current Limit
1.5
VIN = 3V
VOUT = 0V
1.4
1.3
1.2
1.1
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
3468 G16
LT3468-1 Switch Current Limit
0.700
0.660
VIN = 3V
VOUT = 0V
0.620
0.580
0.540
0.500
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
3468 G17
LT3468-2 Switch Current Limit
1.00
VIN = 3V
VOUT = 0V
0.96
0.92
0.88
0.84
0.80
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
34682 G18
346812f
4
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