Datasheet

LTC3855
8
3855f
Typical perForMance characTerisTics
Undervoltage Lockout Threshold
(INTV
CC
) vs Temperature
Oscillator Frequency
vs Input Voltage
Shutdown Current
vs Input Voltage
Shutdown Current
vs Temperature
Quiescent Current
vs Input Voltage without EXTV
CC
Shutdown (RUN) Threshold
vs Temperature
Regulated Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–50
1.26
1.24
1.22
1.20
1.14
1.18
1.16
1.12
1.10
25 75
3855 G15
–25 0
50 125100
RUN PIN THRESHOLD (V)
OFF
ON
TEMPERATURE (°C)
–50
612
610
608
606
604
602
600
592
594
596
598
25 75
3855 G16
–25 0
50 125100
REGULATED FEEDBACK VOLTAGE (mV)
TEMPERATURE (°C)
–50
900
800
700
500
600
0
100
200
300
400
25 75
3855 G17
–25 0
50 125100
FREQUENCY (kHz)
V
FREQ
= GND
V
FREQ
= 1.2V
V
FREQ
= INTV
CC
TEMPERATURE (°C)
–40
4.1
3.9
2.9
3.7
2.7
3.1
3.5
2.5
3.3
20 60
3855 G18
–20 0
40 10080
UVLO THRESHOLD (V)
FALLING
RISING
INPUT VOLTAGE (V)
5
520
510
500
490
480
25 35
3855 G19
10 15 20 4030
FREQUENCY (kHz)
INPUT VOLTAGE (V)
5
60
50
40
30
20
10
0
25 35
3855 G20
10 15 20 4030
SHUTDOWN INPUT CURRENT (µA)
60
50
40
30
20
10
0
3855 G21
SHUTDOWN CURRENT (µA)
TEMPERATURE (°C)
–50 25 75
–25 0
50 125100
INPUT VOLTAGE (V)
5
4.5
4.3
4.1
3.3
3.1
2.5
2.7
2.9
3.5
3.7
3.9
25 35
3855 G22
10 15 20 4030
SUPPLY CURRENT (mA)