LTC1735 Linear Technology, LTC1735 Datasheet - Page 5

• Manufacturer Part Number: LTC1735
• Description: High Efficiency Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

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