LTC1735I-1 Linear Technology, LTC1735I-1 Datasheet - Page 5

• Manufacturer Part Number: LTC1735I-1
• Description: High Efficiency Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
–100
–10
–20
–50
–30
100
50
90
80
70
60
50
40
10
80
70
60
50
40
30
20
10
30
20
0
0
0
0
0
0
Maximum Current Sense Threshold
vs Normalized Output Voltage
(Foldback)
Maximum Current Sense Voltage
vs I
SENSE Pins Total Source Current
V
TH
NORMALIZED OUTPUT VOLTAGE (%)
SENSE
0.5
Voltage
25
COMMON MODE VOLTAGE (V)
2
1
V
ITH
50
(V)
1.5
4
75
W
2
1735-1 G10
1735-1 G16
1735-1 G13
U
100
2.5
6
2.5
0.5
2.0
1.5
1.0
60
20
80
75
70
65
60
80
40
0
0
–40
0
Maximum Current Sense Threshold
vs Temperature
0
Maximum Current Sense Threshold
vs V
I
TH
V
V
V
V
R
f
O
CONTINUOUS
SENSE(CM)
SENSE(CM)
IN
OUT
SENSE
= 300kHz
–15
Voltage vs Load Current
RUN/SS
= 10V
1
= 3.3V
1
= 0.01
MODE
10
TEMPERATURE ( C)
= 1.6V
= 1.6V
LOAD CURRENT (A)
Burst Mode
OPERATION
2
2
V
RUN/SS
35
SYNCHRONIZED f = f
3
3
60
(V)
4
4
85
110
5
5
1735-1 G11
1735-1 G18
1735-1 G17
O
135
6
6
100
2.5
2.0
1.5
1.0
0.5
20
80
76
64
80
60
40
72
68
60
0
0
0
0
Output Current vs Duty Cycle
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
V
0
f
V
SYNC
ITH
OSENSE
vs V
= f
1
(SYNCHRONIZED)
20
COMMON MODE VOLTAGE (V)
1
O
= 0.7V
RUN/SS
DUTY CYCLE (%)
2
LTC1735-1
I
OUT
V
40
2
RUN/SS
/I
MAX
3
(FREE RUN)
I
(V)
OUT
60
3
/I
4
MAX
80
4
5
1735-1 G14
1735-1 G15
1735-1 G12
5
100
5
6