LTC3811_15 Datasheet, PDF (7/48 Pages) Linear Technology – High Speed Dual, Multiphase Step-Down DC/DC Controller

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3811
FB Voltage vs Temperature
0.6030
0.6025
0.6020
0.6015
0.6010
0.6005
0.6000
0.5995
0.5990
0.5985
0.5980
0.5975
0.5970
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
3811 G10
Oscillator Frequency vs
Temperature
800
700
V_PLL/LPF = INTV_CC
600
V_PLL/LPF = FLOATING
500
400
300
V_PLL/LPF = 0V
200
100
0
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
3811 G13
Supply Current vs Supply Voltage
15
14
13
–40°C
12
25°C
11
85°C
10
9
8
7
6
5
0 4 8 12 16 20 24 28 32 36
SUPPLY VOLTAGE (V)
3811 G16
FB Voltage Line Regulation
600.5
600.4
600.3
600.2
600.1
600.0
599.9
599.8
599.7
599.6
599.5
0 4 8 12 16 20 24 28 32 36
SUPPLY VOLTAGE (V)
3811 G11
Oscillator Frequency vs
Supply Voltage
800
700
V_PLL/LPF = INTV_CC
600
V_PLL/LPF = FLOATING
500
400
300
V_PLL/LPF = 0V
200
100
0
0 5 10 15 20 25 30 35 40
SUPPLY VOLTAGE (V)
3811 G14
SS/TRACK Pin Current vs
Common Mode Voltage
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
0
100 200 300 400 500 600 700
COMMON MODE VOLTAGE (mV)
3811 G17
Differential Amplifier Gain vs
Temperature
1.010
1.008
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
3811 G12
Shutdown Mode Supply Current
vs Supply Voltage
40
85°C
35
25°C
30
–40°C
25
20
15
10
5
0
0 4 8 12 16 20 24 28 32 36
SUPPLY VOLTAGE (V)
3811 G15
SS/TRACK Pin Current vs
Temperature
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
3811 G18
3811f
7