ltc3728legn-1-tr Linear Technology Corporation, ltc3728legn-1-tr Datasheet - Page 5

• Manufacturer Part Number: ltc3728legn-1-tr
• Description: Dual, 550khz, 2-phase Synchronous Regulator
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
1000
800
600
400
200
5.1
5.0
4.9
4.8
4.7
4.6
4.5
4.4
60
20
80
40
0
0
0
0
0
Supply Current vs Input Voltage
and Mode (Figure 13)
Internal 5V LDO Line Regulation
Maximum Current Sense Threshold
vs V
I
V
LOAD
SENSE(CM)
RUN/SS
5
5
1
= 1mA
SHUTDOWN
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 1.6V
10
10
2
(Soft-Start)
V
BOTH
CONTROLLERS ON
RUN/SS
15
15
3
(V)
20
20
4
25
25
5
3728L1 G04
3728L1 G07
3728L1 G10
30
30
6
200
150
100
50
75
50
25
80
76
68
64
60
72
0
0
0
0
EXTV
Maximum Current Sense Threshold
vs Duty Factor
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
0
CC
20
COMMON MODE VOLTAGE (V)
1
10
Voltage Drop
DUTY FACTOR (%)
CURRENT (mA)
40
2
20
60
3
30
80
4
3728L1 G05
3728L1 G08
3728L1 G11
40
100
5
4.75
4.70
5.05
5.00
4.95
4.90
4.85
4.80
–10
–20
–30
90
80
70
60
50
40
10
80
70
60
50
40
30
20
10
30
20
0
0
–50
0
0
INTV
Voltage vs Temperature
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
Current Sense Threshold
vs I
–25
TH
CC
0.5
EXTV
Voltage
and EXTV
25
LTC3728L-1
0
TEMPERATURE (°C)
CC
SWITCHOVER THRESHOLD
INTV
1
25
V
ITH
50
CC
CC
(V)
50
VOLTAGE
1.5
Switch
75
75
2
100
3728L1 G06
3728L1 G09
3728L1 G12
3728l1fc
5
125
100
2.5