LTC3826-1 Datasheet, PDF (6/32 Pages) Linear Technology – 30μA IQ, Dual, 2-Phase Synchronous Step-Down Controller

LTC3826-1
TYPICAL PERFORMANCE CHARACTERISTICS
Foldback Current Limit
120
TRACK/SS = 1V
100
80
60
40
20
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
FEEDBACK VOLTAGE (V)
38261 G16
TRACK/SS Pull-Up Current
vs Temperature
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38261 G19
Sense Pins Total Input Current
vs Temperature
60
30
0
–30
V_OUT = 10V
–60
V_OUT = 3.3V
–90
–120
–150
–180
–210
V_OUT = 0V
–240
–270
–300
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38261 G22
Quiescent Current vs Temperature
44
PLLIN/MODE = 0V
42
40
38
36
34
32
30
28
26
24
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38261 G17
Shutdown (RUN) Threshold
vs Temperature
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38261 G20
Shutdown Current
vs Input Voltage
6
5
4
3
2
1
0
5 10 15 20 25 30 35
INPUT VOLTAGE (V)
38261 G23
6
Sense Pins Total Input
Bias Current vs I_TH
4 _{VSENSE = 3.3V}
3
2
1
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
I_TH VOLTAGE (V)
38261 G18
Regulated Feedback Voltage
vs Temperature
808
806
804
802
800
798
796
794
792
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38261 G21
Oscillator Frequency
vs Temperature
800
700
600
V_PLLLPF = INTV_CC
500
V_PLLLPF = FLOAT
400
300
V_PLLLPF = GND
200
100
0
–45 –25
–5 15 35 55
TEMPERATURE (°C)
75 95
38261 G24
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