Datasheet

LTC3828
5
3828fc
Oscillator Frequency vs
Temperature
TRCKSS Current vs Temperature
Current Sense Pin Input Current vs
Temperature
Maximum Current Sense
Threshold vs Temperature
INTV
CC
Voltage vs Temperature Load Regulation
Supply Current vs Input Voltage
(Figure 14)
Internal 5V LDO Line Regulation
Undervoltage Lockout
vs Temperature
INPUT VOLTAGE (V)
0
SUPPLY CURRENT (µA)
1200
1000
800
600
400
200
0
5101520
3828 G04
25 30
BOTH CONTROLLERS ON
SHUTDOWN
INTV
CC
VOLTAGE (V)
3828 G05
5.2
5.0
4.8
4.6
4.4
4.2
4.0
INPUT VOLTAGE (V)
0 5 10 15 20 25 30
I
LOAD
= 1mA
TEMPERATURE (°C)
–50
3.8
3.6
3.4
3.2
3.0
100
3828 G06
–25 0 25 50 75 125
UNDERVOLTAGE LOCKOUT (V)
TEMPERATURE (°C)
–50
700
600
500
400
300
200
100
0
25 75
3828 G07
–25 0
50 100 125
FREQUENCY (kHz)
V
PLLFLTR
= 2.4V
V
PLLFLTR
= 1.2V
V
PLLFLTR
= 0V
TEMPERATURE (°C)
–50 25 75
–25 0
50 100 125
TRCKSS CURRENT (µA)
1.5
1.3
1.1
0.9
0.7
0.5
3828 G08
TEMPERATURE (°C)
–50 25 75
–25 0
50 100 125
37
35
33
31
29
3828 G09
CURRENT SENSE INPUT CURRENT (µA)
TEMPERATURE (°C)
–50 25 75
–25 0
50 100 125
V
SENSE
(mV)
80
78
76
74
72
70
3828 G10
V
OUT
= 5V
TEMPERATURE (°C)
–50 25 75
–25 0
50 100 125
5.1
5.0
4.9
4.8
4.7
3828 G11
INTV
CC
VOLTAGE (V)
LOAD CURRENT (A)
0
NORMALIZED V
OUT
(%)
–0.2
–0.1
4
3828 G12
–0.3
–0.4
1
2
3
5
0
FCB = 0V
V
IN
= 15V
FIGURE 14
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C unless otherwise noted.