LTC3853_15 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
1.60
1.55
1.50
1.45
1.40
1.35
1.30
–60 –40 –20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
3853 G17
Oscillator Frequency
vs Temperature
900
800
V_FREQ = INTV_CC
700
600
V_FREQ = 1.2V
500
400
300
V_FREQ = 0V
200
–60 –40 –20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
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
0.9
–60 –40 –20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
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
60
55
50
45
40
35
30
25
20
–60 –40 –20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
3853 G24
For more information www.linear.com/LTC3853
Regulated Feedback Voltage
vs Temperature
806
804
802
800
798
796
794
–60 –40 –20 0 20 40 60 80 100 120 140 160
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
6.0
5.5
5.0
4.5
4.0
3.5
3.0
–60 –40 –20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
3853 G25
3853fc
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