LTC3788 Datasheet, PDF (6/32 Pages) Linear Technology – 2-Phase, Dual Output Synchronous Boost Controller

LTC3788
TYPICAL PERFORMANCE CHARACTERISTICS
Inductor Current at Light Load
Soft Start-Up
FORCED
CONTINUOUS MODE
Burst Mode
OPERATION
5A/DIV
PULSE-SKIPPING
MODE
V_IN = 12V
5μs/DIV
V_OUT = 24V
I_LOAD = 200μA
FIGURE 9 CIRCUIT
3788 G07
Regulated Feedback Voltage
vs Temperature
1.212
1.209
1.206
1.203
1.200
1.197
1.194
1.191
1.188
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
3788 G09
6
Shutdown Current vs Temperature
11.0
10.5 ^{VIN = 12V}
10.0
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
–45 –20
5 30 55 80 105 130
TEMPERATURE (°C)
3788 G11
V_OUT
5V/DIV
0V
V_IN = 12V
20ms/DIV
V_OUT = 24V
FIGURE 9 CIRCUIT
3788 G08
Soft-Start Pull-Up Current
vs Temperature
11.0
10.5
10.0
9.5
9.0
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
3788 G10
Shutdown Current
vs Input Voltage
20
15
10
5
0
0 5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3788 G12
3788f