LTC3608 Datasheet, PDF (6/24 Pages) Linear Technology – 18V, 8A Monolithic Synchronous Step-Down DC/DC Converter

LTC3608
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Valley Current Limit
vs Temperature
20
15
10
5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G16
Input Voltage
vs Maximum Valley Current
18
16
14
12
10
8
6
4
4
8
12
16
20
INPUT VOLTAGE (V)
3608 G17
Maximum Valley Current Limit
in Foldback
15
10
5
0
0 0.1 0.2 0.3 0.4 0.5 0.6
V_FB (V)
3608 G18
Feedback Reference Voltage
vs Temperature
0.62
0.61
0.60
0.59
0.58
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G19
Error Amplifier g_m vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G20
6
Input and Shutdown Currents
vs Input Voltage
1400
40
1200
1000
800
600
400
200
EXTV_CC OPEN
35
30
25
SHUTDOWN
20
15
10
EXTV_CC = 5V
5
0
0
0
5
10
15
20
INPUT VOLTAGE (V)
3608 G21
INTV_CC Load Regulation
0.30
0.20
0.10
0
–0.10
–0.20
–0.30
–0.40
0
10
20
30
40
50
INTVCC LOAD CURRENT (mA)
3608 G22
3608fa