LTC3853 Datasheet, PDF (7/36 Pages) Linear Technology – Triple Output, Multiphase Synchronous Step-Down Controller

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3853
TK/SS Pull-Up Current
vs Temperature
1.75
1.65
1.55
1.45
1.35
1.25
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3853 G17
Oscillator Frequency
vs Temperature
900
V_FREQ = INTV_CC
800
700
600
V_FREQ = 1.2V
500
400
300
200
–50 –25
V_FREQ = 0V
0 25 50 75
TEMPERATURE (°C)
100 125
3853 G20
Shutdown Current
vs Input Voltage
60
50
40
30
20
5
10
15
20
INPUT VOLTAGE (V)
25
3853 G23
Shutdown (RUN) Threshold
vs Temperature
1.4
1.3
ON
1.2
OFF
1.1
1.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3853 G18
Undervoltage Lockout Threshold
(INTV_CC) vs Temperature
4.25
4.00
RISING
3.75
3.50
FALLING
3.25
3.00
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3853 G21
Shutdown Current
vs Temperature
70
V_IN = 12V
60
50
40
30
20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3853 G24
Regulated Feedback Voltage
vs Temperature
806
804
802
800
798
796
794
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
3853 G19
Oscillator Frequency
vs Input Voltage
500
450
400
350
300
5
10
15
20
INPUT VOLTAGE (V)
25
3853 G22
Quiescent Current
vs Temperature Without EXTV_CC
6
5
4
3
–50 –25
0 25 50 75
TEMPERATURE (˚C)
100 125
3853 G25
3853f
7