Datasheet

LTC3862-1
7
38621f
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Current Sense
Threshold vs Duty Cycle
RUN Threshold vs Temperature RUN Threshold vs Input Voltage
RUN (Off) Source Current
vs Temperature
RUN Source Current
vs Input Voltage
RUN (On) Source Current
vs Temperature
Soft-Start Current
vs Soft-Start Voltage
Oscillator Frequency
vs Temperature
Soft-Start Current vs Temperature
TEMPERATURE (°C)
–50
1.10
RUN PIN VOLTAGE (V)
1.15
1.20
1.25
1.30
–25 0 25 50
38612 G19
75
ON
OFF
100 125 150
INPUT VOLTAGE (V)
0
RUN PIN VOLTAGE (V)
1.3
1.4
1.5
15 25 40
38621 G20
1.2
1.1
1.0
510
20
ON
OFF
30 35
TEMPERATURE (°C)
–50
–1.0
RUN PIN CURRENT (µA)
–0.9
–0.7
–0.6
–0.5
0
–0.3
0
50
75
38621 G21
–0.8
–0.2
–0.1
–0.4
–25 25
100
125
150
TEMPERATURE (°C)
–50
RUN PIN CURRENT (µA)
–4
–2
150
38621 G22
–6
–8
0
50
100
–25
25
75
125
0
–5
–3
–7
–1
INPUT VOLTAGE (V)
8
RUN PIN CURRENT (µA)
–3
–2
–1
28
38621 G23
–4
–5
12 16 20
32
24 36
–6
–7
0
TEMPERATURE (°C)
–50
–5.6
SOFT-START CURRENT (µA)
–5.5
–5.4
–5.3
–5.2
050
100
150
38621 G24
–5.1
–5.0
–25 25
75
125
SOFT-START VOLTAGE (V)
0
–6
SOFT-START CURRENT (µA)
–5
–4
–3
–2
12
3
4
38621 G25
–1
0
0.5 1.5
2.5
3.5
TEMPERATURE (°C)
–50
FREQUENCY (kHz)
302
303
304
305
150
38621 G26
301
300
298
0
50
100
–25
25
75
125
299
307
306
DUTY CYCLE (%)
0
30
MAXIMUM CURRENT SENSE THRESHOLD (mV)
35
45
50
55
80
65
20
5040
7060
38621 G18
40
70
75
60
10 30
80
90
100
SLOPE = 0.625
SLOPE = 1
SLOPE = 1.66