LTC3862 Datasheet, PDF (7/40 Pages) Linear Technology – Multi-Phase Current Mode Step-Up DC/DC Controller

TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Current Sense
Threshold vs Duty Cycle
80
75
SLOPE = 0.625
70
SLOPE = 1
SLOPE = 1.66
65
60
55
50
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
3862 G18
RUN (Off) Source Current vs
Temperature
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3862 G21vv
Soft-Start Current vs Temperature
–5.0
–5.1
–5.2
–5.3
–5.4
–5.5
–5.6
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3862 G24
RUN Threshold vs Temperature
1.30
ON
1.25
1.20
OFF
1.15
1.10
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3862 G09
RUN (On) Source Current vs
Temperature
0
–1
–2
–3
–4
–5
–6
–7
–8
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1344 G06
Soft-Start Current vs
Soft-Start Voltage
0
–1
–2
–3
–4
–5
–6
0 0.5 1 1.5 2 2.5 3 3.5 4
SOFT-START VOLTAGE (V)
3862 G25
LTC3862
RUN Threshold vs Input Voltage
1.5
1.4
1.3
ON
1.2
OFF
1.1
1.0
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3862 G20
RUN Source Current vs
Input Voltage
0
–1
–2
–3
–4
–5
–6
–7
4 8 12 16 20 24 28 32 36
INPUT VOLTAGE (V)
3862 G23
Oscillator Frequency vs
Temperature
307
306
305
304
303
302
301
300
299
298
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3862 G26
3862fb
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