ltc3862gn-1 Linear Technology Corporation, ltc3862gn-1 Datasheet - Page 7

• Manufacturer Part Number: ltc3862gn-1
• Description: Multi-phase Current Mode Step-up Dc/dc Controller
• Manufacturer: Linear Technology Corporation

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