LTC3114-1_15 Datasheet, PDF (6/34 Pages) Linear Technology – 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current

LTC3114-1
TYPICAL PERFORMANCE CHARACTERISTICS (T_A = 25°C unless otherwise specified)
LDO Voltage vs Temperature
4.490
4.480
4.470
V_IN = 40V
4.460
4.450
4.440
4.430
4.420
V_IN = 5V
4.410
4.400
–60 –30
0 30 60 90 120 150
TEMPERATURE (°C)
31141 G16
RUN Pin Threshold
vs Temperature
1.230
V_IN = 24V
1.228
1.226
1.224
1.222
1.220
1.218
1.216
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G19
Power Switch Resistance
vs Temperature
0.41
0.39 ^{VIN = 24V}
0.37
0.35
0.33
0.31
0.29
0.27
0.25
0.23
0.21
0.19
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G22
6
LDO Dropout Voltage
vs Temperature
80
I_LDO = 5mA
70
60
50
40
30
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G17
RUN Pin Current vs RUN Pin
Voltage
8
V_IN = 12V
7
6
5
4
3
2
1
0
0 5 10 15 20 25 30 35 40
RUN PIN VOLTAGE (V)
31141 G20
Inductor Current Limit Threshold
vs Temperature
1.800
V_IN = 24V
1.775
1.750
1.725
1.700
1.675
1.650
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G23
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Oscillator Frequency
vs Temperature
1.160
1.140
1.120
1.100
1.080
1.060
–60 –30
V_IN = 3V
V_IN = 24V
V_IN = 40V
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G18
FB Voltage vs Temperature
0.24
V_IN = 24V
0.16
0.08
0
–0.08
–0.16
–0.24
–0.32
–0.40
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G21
Inductor Overload Current Limit
Threshold vs Temperature
2.70
V_IN = 24V
2.65
2.60
2.55
2.50
2.45
2.40
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G24
31141fa