Datasheet

LTC3835-1
6
38351fc
TYPICAL PERFORMANCE CHARACTERISTICS
Foldback Current Limit
Quiescent Current
vs Temperature
SENSE Pins Total Input
Bias Current vs I
TH
TRACK/SS Pull-Up Current
vs Temperature
Shutdown (RUN) Threshold
vs Temperature
Regulated Feedback Voltage
vs Temperature
SENSE Pins Total Input Current
vs Temperature
Shutdown Current
vs Input Voltage
Oscillator Frequency
vs Temperature
T
A
= 25°C, unless otherwise noted.
FEEDBACK VOLTAGE (V)
0
0
MAXIMUM CURRENT SENSE VOLTAGE (V)
20
60
80
100
0.2
0.4
0.5 0.9
38351 G16
40
0.1 0.3
0.6
0.7
0.8
120
TRACK/SS = 1V
TEMPERATURE (°C)
–45
QUIESCENT CURRENT (μA)
80
85
90
75
38351 G17
75
70
60
–15
15
45
–30 90
0
30
60
65
100
95
PLLIN/MODE = 0V
I
TH
VOLTAGE (V)
0
INPUT CURRENT (μA)
2
4
6
8
12
38351 G18
0
0.2
0.4 0.6 0.8 1.0 1.2 1.4
10
V
SENSE
= 3.3V
TEMPERATURE (°C)
–45
TRACK/SS CURRENT (μA)
1.00
1.05
1.10
75
38351 G19
0.95
0.90
0.80
–15
15
45
–30 90
0
30
60
0.85
1.20
1.15
TEMPERATURE (°C)
–45
RUN PIN VOLTAGE (V)
0.80
0.85
0.90
75
38351 G20
0.75
0.65
0.50
–15
15
45
–30 90
0
30
60
0.55
0.70
0.60
1.00
0.95
TEMPERATURE (°C)
–45
REGULATED FEEDBACK VOLTAGE (mV)
800
802
804
75
38351 G21
798
796
792
–15
15
45
–30 90
0
30
60
794
808
806
TEMPERATURE (°C)
–45
–800
INPUT CURRENT (μA)
–700
–500
–400
–300
200
–100
–15
15
30 90
38351 G22
–600
0
100
–200
–30 0
45
60
75
V
OUT
= 0V
V
OUT
= 3.3V
V
OUT
= 10V
INPUT VOLTAGE (V)
510
0
INPUT CURRENT (μA)
10
25
15
25
30
38351 G23
5
20
15
20
35
TEMPERATURE (°C)
–45
0
FREQUENCY (kHz)
100
300
400
500
800
700
–5
35
55
38351 G24
200
600
–25
15
75
V
PLLLPF
= INTV
CC
V
PLLLPF
= FLOAT
V
PLLLPF
= GND