LTC3709 Linear Technology, LTC3709 Datasheet - Page 6

• Manufacturer Part Number: LTC3709
• Description: No RSENSE Synchronous DC/DC Controller
• Manufacturer: Linear Technology

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LTC3709
6
TYPICAL PERFOR A CE CHARACTERISTICS
–20
–25
–30
–35
–40
–45
–50
4.5
4.3
4.1
3.9
3.7
3.5
45
40
35
30
25
20
15
–40
–40
–40
Shutdown Current at V
V
UVLO Threshold
FB
Pin Input Current
–20
–20
–20
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
0
20
20
20
40
40
40
CC
= 5V
W
60
60
60
3709 G10
3709 G13
3709 G16
80
80
80
U
10000
1000
100
10
1.4
1.4
1.6
1.5
1.3
1.2
1.8
1.6
1.2
1.0
0.8
10
–40
–40
On-Time vs I
Error Amplifier g
RUN/SS Threshold
–20
–20
I
TEMPERATURE (°C)
TEMPERATURE (°C)
ON
0
0
ON
CURRENT (µA)
Current
100
20
20
m
40
40
60
60
3709 G17
3709 G11
3709 G14
1000
80
80
–150
–100
150
300
250
200
100
–50
50
0.2
3.0
2.0
0.4
0.3
0.1
4.0
3.5
2.5
0
0
0
Current Sense Threshold
vs I
–40
–40
EA Load Regulation
Armed Threshold
TH
–20
–20
Voltage
0.6
V
TEMPERATURE (°C)
TEMPERATURE (°C)
I
RNG
TH
0
0
VOLTAGE (V)
V
= 0V
RNG
1.2
20
20
V
= 1V
RNG
= V
40
40
V
V
CC
RNG
1.8
RNG
= 0.5V
60
60
= 2V
3709 G18
3709 G12
3709 G15
3709f
80
80
2.4