Datasheet

LTC3861
7
3861fa
For more information www.linear.com/LTC3861
Typical perFormance characTerisTics
FREQ Pin Current vs Temperature
600kHz Preset Frequency
vs Temperature
1MHz Preset Frequency
vs Temperature
Quiescent Current vs Temperature
Shutdown Quiescent Current
vs Temperature
Shutdown Quiescent Current
vs Supply Voltage
Oscillator Frequency vs R
FREQ
Overcurrent Threshold
vs Temperature I
LIM
Pin Current vs Temperature
R
FREQ
(kΩ)
0
OSCILLATOR FREQUENCY (MHz)
40
80
100
3861 G19
0.9
2.1
2.3
2.5
0.5
1.7
1.3
0.7
1.9
0.1
0.3
1.5
1.1
20
60
120
TEMPERATURE (°C)
–50
CURRENT SENSE VOLTAGE (mV)
25
30
35
20
15
50
0
100 150
10
5
40
3861 G20
I
LIM
= 1.2V
I
LIM
= 800mV
TEMPERATURE (°C)
–50
I
LIM
PIN CURRENT (µA)
20.0
20.2
20.4
100
19.8
19.6
0 50 150
19.4
19.2
20.6
3861 G21
TEMPERATURE (°C)
–50
FREQ PIN CURRENT (µA)
20.0
20.2
20.4
100
19.8
19.6
0 50 150
19.4
19.0
19.2
20.6
3861 G22
TEMPERATURE (°C)
–50
OSCILLATOR FREQUENCY (kHz)
585
590
595
50 100
3861 G23
580
575
0 150
570
565
600
TEMPERATURE (°C)
–50
980
990
970
960
50
0
100 150
950
940
1000
OSCILLATOR FREQUENCY (kHz)
3861 G24
TEMPERATURE (°C)
–50
QUIESCENT CURRENT (mA)
26
125
24
22
0
50
–25
25
75 100 150
20
18
28
3861 G25
V
IN
= 6V
V
CC
= 5V
RUN1 = RUN2 = 5V
TEMPERATURE (°C)
–50
SHUTDOWN CURRENT (µA)
32
33
125
31
30
0
50
–25
25
75 100 150
29
28
34
3861 G26
V
IN
= 6V
V
CC
= 5V
SUPPLY VOLTAGE (V)
0
0
SHUTDOWN CURRENT (µA)
10
20
30
1 2 3 4
40
5
15
25
35
65
3861 G27