LTC3609 Datasheet, PDF (6/24 Pages) Linear Technology – 32V, 6A Monolithic Synchronous Step-Down DC/DC Converter

LTC3609
TYPICAL PERFORMANCE CHARACTERISTICS
On-Time vs Temperature
300
I_ION = 30μA
V_VON = 0V
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3609 G13
Maximum Valley Current Limit vs
Temperature
15
Maximum Valley Current Limit vs
V_RNG Voltage
15
FIGURE 6 CIRCUIT
12
9
6
3
0
0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
V_RNG VOLTAGE (V)
3609 G14
Maximum Valley Current vs Input
Voltage
10
Maximum Valley Current Limit vs
RUN/SS Voltage
15
FIGURE 6 CIRCUIT
12
9
6
3
0
1.65 1.90 2.15 2.40 2.65 2.90 3.15 3.40
RUN/SS VOLTAGE (V)
3609 G15
Maximum Valley Current Limit
in Foldback
10
12
8
8
9
6
6
6
4
4
3
2
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3609 G16
0
4
12
20
28
36
INPUT VOLTAGE (V)
3609 G17
0
0 0.1 0.2 0.3 0.4 0.5 0.6
V_FB (V)
3609 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
3609 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
3609 G20
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 25 30
INPUT VOLTAGE (V)
3609 G21
3609f
6