Datasheet

LTC3869/LTC3869-2
7
38692fa
For more information www.linear.com/LTC3869
TK/SS Pull-Up Current
vs Temperature
TK/SS CURRENT (µA)
1.6
1.2
1.4
1.0
TEMPERATURE (°C)
–50 500 100
3869 G17
12525–25 75
Typical perForMance characTerisTics
Undervoltage Lockout Threshold
(INTV
CC
) vs Temperature
Oscillator Frequency
vs Input Voltage
Shutdown (RUN) Threshold
vs Temperature
Regulated Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–50
900
800
700
500
600
0
100
200
300
400
25 75
3869 G20
–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
3869 G21
–20 0
40 10080
UVLO THRESHOLD (V)
FALLING
RISING
INPUT VOLTAGE (V)
5
520
510
500
490
480
25 35
3869 G22
10 15 20 4030
FREQUENCY (kHz)
T
A
= 25°C, unless otherwise noted.
TEMPERATURE (°C)
–50
1.24
1.22
1.20
1.18
1.12
1.16
1.14
1.10
1.08
25 75
3869 G18
–25 0
50 125100
RUN PIN THRESHOLD (V)
OFF
ON
TEMPERATURE (°C)
–40
604
602
600
598
590
592
594
596
35 85
3869 G19
–15 10
60 125110
REGULATED FEEDBACK VOLTAGE (mV)