ltc3608ewkg Linear Technology Corporation, ltc3608ewkg Datasheet - Page 5

• Manufacturer Part Number: ltc3608ewkg
• Description: 18v, 8a Monolithic Synchronous Step-down Dc/dc Converter
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
700
600
500
400
300
200
100
300
250
200
150
100
–10
50
25
20
15
10
–5
0
0
5
0
–50
Frequency vs Load Current
0
0
On-Time vs Temperature
Load Current
vs I
I
V
ION
VON
–25
TH
= 30μA
0.5
= 0V
2
Voltage and V
DISCONTINUOUS MODE
0
TEMPERATURE (°C)
LOAD CURRENT (A)
1.0
I
TH
4
25
VOLTAGE (V)
CONTINUOUS MODE
1.5
50
V
6
RNG
RNG
2.0
75
=
8
1V
0.7V
0.5V
2.5
100
3608 G13
3608 G07
3608 G10
125
3.0
10
10000
–0.20
–0.40
–0.60
–0.80
1000
0.80
0.60
0.40
0.20
100
10
25
20
15
10
0
5
0.5
0
Load Regulation
1
Maximum Valley Current Limit
vs V
On-Time vs I
FIGURE 6 CIRCUIT
RNG
0.6
2
Voltage
LOAD CURRENT (A)
V
I
ON
RNG
0.7
ON
4
CURRENT (μA)
VOLTAGE (V)
Current
10
0.8
6
V
0.9
8
VON
3608 G08
3608 G14
= 0V
3608 G11
100
10
1.0
1000
800
600
400
200
2.5
2.0
1.5
1.0
0.5
15
12
9
6
3
0
0
0
1.65
0
0
I
Maximum Valley Current Limit
vs RUN/SS Voltage
On-Time vs V
TH
I
ON
Voltage vs Load Current
CONTINUOUS
1.90 2.15
= 30μA
DISCONTINUOUS
MODE
MODE
RUN/SS VOLTAGE (V)
LOAD CURRENT (A)
V
1
ON
2.40
ON
VOLTAGE (V)
LTC3608
Voltage
5
2.65 2.90 3.15 3.40
2
3608 G09
3608 G12
3608 G15
3608fa
5
10
3