LTC3458L Linear Technology, LTC3458L Datasheet - Page 4

• Manufacturer Part Number: LTC3458L
• Description: 1.7A/ 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
• Manufacturer: Linear Technology

LTC3458L
4
TYPICAL PERFOR A CE CHARACTERISTICS
1600
1400
1200
1000
1.03
1.01
0.99
0.95
1.05
0.97
800
600
400
200
0
–45
1.5
Frequency Accuracy
Maximum Load Current
1.8 to 5.5V
R
RT = 200k
–30
ILIM
2.0
= 84.5k
–15
2.5
IN
TEMPERATURE (°C)
0
at 1MHz
3.0
15
V
IN
3.5
(V)
30
4.0
45
3.3V
5V
4.5
OUT
60
W
OUT
5.0
75
3458L G10
3458L G07
U
90
5.5
1.25
1.24
1.23
1.22
1.20
1.21
0.9
0.7
0.5
1.0
0.8
0.6
95
93
91
89
87
85
500
–45
–45
Efficiency vs Frequency
SHDN Pin Threshold and
Hysteresis
FB Voltage
V
V
L = 7.4µH
IN
OUT
–30
–30
= 3.3V
= 5V at 200mA
700
–15
–15
SHUTDOWN
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQUENCY (kHz)
0
0
900
OPERATING
15
15
30
30
1100
45
45
1300
60
60
(T
75
75
3458L G08
3458L G11
3458L G13
A
1500
= 25°C unless otherwise specified)
90
90
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.5
0.3
0.2
0.1
0
–45
–40
N-Channel and P-Channel R
SYNC Pin Threshold
V
V
–30
IN
OUT
= 3.3V
= 5V
–15
–15
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TEMPERATURE (°C)
TEMPERATURE (°C)
0
10
15
N-CHANNEL
30
35
45
P-CHANNEL
60
60
DS(ON)
75
3458L G09
3458L G12
3458lf
90
85