Datasheet

LTC3835
7
3835fd
TYPICAL PERFORMANCE CHARACTERISTICS
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
Undervoltage Lockout Threshold
vs Temperature
Oscillator Frequency
vs Input Voltage
Shutdown Current
vs Temperature
TEMPERATURE (°C)
–45
TRACK/SS CURRENT (µA)
1.00
1.05
1.10
75
3835 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
3835 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
3835 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
3835 G22
–600
0
100
–200
–30 0
45
60
75
V
OUT
= OV
V
OUT
= 3.3V
V
OUT
= 10V
INPUT VOLTAGE (V)
5 10
0
INPUT CURRENT (µA)
10
25
15
25
30
3835 G23
5
20
15
20
35
TEMPERATURE (°C)
–45
0
FREQUENCY (kHz)
100
300
400
500
800
700
–5
35
55
3835 G24
200
600
–25
15
75 95
V
PLLLPF
= INTV
CC
V
PLLLPF
= FLOAT
V
PLLLPF
= GND
TEMPERATURE (°C)
–45
3.2
INTV
CC
VOLTAGE (V)
3.3
3.5
3.6
3.7
4.2
3.9
–15
15
30
3835 G25
3.4
4.0
4.1
3.8
–30
0
60
45
75 90
FALLING
RISING
INPUT VOLTAGE (V)
5 10
FREQUENCY (kHz)
15
25
30
3835 G26
20
35
392
394
398
400
402
396
404
TEMPERATURE (°C)
–45
SHUTDOWN CURRENT (µA)
75
3835 G27
–15
15
45
–30 90
0
30
60
0
2
6
8
10
4
12
T
A
= 25ºC, unless otherwise noted.