ltc3713 Linear Technology Corporation, ltc3713 Datasheet - Page 5

• Manufacturer Part Number: ltc3713
• Description: Low Input Voltage, High Power, No Rsense Synchronous Buck Dc/dc Controller
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
1000
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
800
300
250
200
150
100
600
400
200
50
0
0
0
0.5
0
On-Time vs V
0
Load Regulation
Maximum Current Sense
Threshold vs V
I
ION
1
= 30 A
0.75
2
3
LOAD CURRENT (A)
V
1.0
V
RNG
1
ON
4
ON
VOLTAGE (V)
VOLTAGE (V)
RNG
1.25
Voltage
5
FIGURE 1 CIRCUIT
Voltage
6
1.5
2
7
W
8
1.75
3713 G14
3713 G17
3713 G11
9
U
2.0
10
3
350
300
250
200
150
100
300
250
150
125
100
200
150
100
50
75
50
25
50
0
0
0
–50
1.5
1.5
On-Time vs Temperature
Maximum Current Sense
Threshold vs RUN/SS Voltage
Frequency vs Input Voltage
V
I
ION
RNG
–25
2.0
= 30 A
= 1V
LOAD = 6A
2
2.5
RUN/SS VOLTAGE (V)
0
INPUT VOLTAGE (V)
TEMPERATURE ( C)
3.0
25
2.5
3.5
50
FIGURE 1 CIRCUIT
LOAD = 0A
4.0
75
3
100
4.5
3713 G12
3713 G15
3713 G18
125
3.5
5.0
100
10k
150
125
100
150
140
130
120
110
100
10
1k
75
50
25
0
–50 –25
1
On-Time vs I
0
Current Limit Foldback
Maximum Current Sense
Threshold vs Temperature
V
V
RNG
RNG
= 1V
= 1V
0.2
0
TEMPERATURE ( C)
I
ON
ON
CURRENT ( A)
25
V
Current
FB
10
0.4
(V)
LTC3713
50
75
0.6
V
VON
100
3713 G13
3713 G16
= 0V
3713 G19
3713fa
5
100
125
0.8