Datasheet

LTC3891
8
3891fa
TEMPERATURE (°C)
–75
INTV
CC
VOLTAGE (V)
3.7
3.8
3.9
4.1
–25
75
100
3891 G25
3.6
4.2
4.0
–50
0 25 50
125
150
FALLING
RISING
INPUT VOLTAGE (V)
344
OSCILLATOR FREQUENCY (kHz)
348
350
356
20 30 35 40 45 50 55 60 6515105 25
3891 G26
346
352
354
FREQ = GND
TEMPERATURE (°C)
8
SHUTDOWN CURRENT (µA)
12
14
22
20
25 50 75 100 125 150–25–75 –50 0
3891 G27
10
16
18
V
IN
= 12V
Undervoltage Lockout Threshold
vs Temperature
Oscillator Frequency vs Input
Voltage Shutdown Current vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
INPUT VOLTAGE (V)
0
SHUTDOWN CURRENT (µA)
10
15
30
25
20 30 35 40 45 50 55 60 6515105 25
3891 G23
5
20
TEMPERATURE (°C)
–75
FREQUENCY (kHz)
500
550
600
0 25 50 100
3891 G24
450
400
–50 –25
75 125 150
350
300
FREQ = GND
FREQ = INTV
CC
SENSE
–
Pin Input Bias Current
vs Temperature
Shutdown Current vs Input
Voltage
Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–75
SENSE
–
CURRENT (µA)
50250
3891 G22
400
300
–25–50 75
800
700
600
500
200
100
0
–100
125100 150
V
OUT
> INTV
CC
+ 0.5V
V
OUT
< INTV
CC
– 0.5V