LTC3862 LINER [Linear Technology], LTC3862 Datasheet - Page 5

• Manufacturer Part Number: LTC3862
• Description: Multi-Phase Current Mode Step-Up DC/DC Controller
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
500mV/DIV
1A TO 5A
5A/DIV
5A/DIV
5A/DIV
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
I
V
LOAD
OUT
–50
I
I
L1
L2
Quiescent Current vs Temperature
Load Step
V
V
IN
OUT
–25
= 24V
= 48V
0
TEMPERATURE (°C)
100
25
60
55
50
95
90
85
80
75
70
65
10
Effi ciency vs Output Current
500μs/DIV
V
50
OUT
V
IN
= 48V
= 12V
75
V
LOAD CURRENT (mA)
100
IN
100
= 24V
125
V
IN
3862 G06
3862 G03
= 35V
150
1000
50V/DIV
50V/DIV
2A/DIV
2A/DIV
SW1
SW2
35
30
20
45
40
25
15
10
I
I
5
0
L1
L2
3862 G01
4
Shutdown Quiescent Current vs
Input Voltage
Inductor Current at Light Load
V
V
I
10000
LOAD
IN
OUT
= 12V
8
= 48V
= 100mA
12
INPUT VOLTAGE (V)
16
1μs/DIV
20
24
96
95
94
93
92
91
90
28
0
Effi ciency and Power Loss vs
Input Voltage
V
I
OUT
OUT
32
= 1A
3862 G07
= 48V
3862 G04
10
36
INPUT VOLTAGE (V)
POWER LOSS
EFFICIENCY
20
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
50
40
20
30
10
0
–50
0
Shutdown Quiescent Current vs
Temperature
Quiescent Current vs Input
Voltage
4
V
IN
–25
= 12V
30
8
0
12
3862 G02
TEMPERATURE (°C)
INPUT VOLTAGE (V)
25
40
16
4000
3500
3000
2500
2000
1500
LTC3862
50
20
75
24
100 125
28
32
3862 G08
3862 G05
3862fb
5
150
36