Datasheet

LTC3458L
4
3458lfa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
3458L G123458L G11
3458L G13
3458L G07 3458L G08
FREQUENCY (kHz)
500
EFFICIENCY (%)
95
93
91
89
87
85
1300
700
900
1100
1500
TEMPERATURE (°C)
–40
R
DS(ON)
(Ω)
0.5
0.3
0.2
0.1
0
60
3458L G09
–15
10
35
85
V
IN
(V)
MAX LOAD CURRENT (mA)
3458L G10
1600
1400
1200
1000
800
600
400
200
0
1.5
2.5
3.5
4.0
2.0 3.0
4.5
5.0
5.5
3.3V
OUT
5V
OUT
P-CHANNEL
N-CHANNEL
1.8 to 5.5V
IN
at 1MHz
R
ILIM
= 84.5k
V
IN
= 3.3V
V
OUT
= 5V
V
IN
= 3.3V
V
OUT
= 5V at 200mA
L = 7.4μH
TEMPERATURE (°C)
–45
0.95
FREQUENCY (MHz)
0.97
1.01
1.03
1.05
–15
15
30 90
0.99
–30 0
45
60
75
TEMPERATURE (°C)
–45 –15
15
30 90
–30 0
45
60
75
TEMPERATURE (°C)
–45 –15
15
30 90
–30 0
45
60
75
0.5
VOLTAGE (V)
0.6
0.8
0.9
1.0
0.7
1.20
VOLTAGE (V)
1.21
1.23
1.24
1.25
1.22
TEMPERATURE (°C)
–45 –15
15
30 90
–30 0
45
60
75
VOLTAGE (V)
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
OPERATING
SHUTDOWN
RT = 200k
Efficiency vs Frequency
Maximum Load Current
N-Channel and P-Channel R
DS(ON)
(T
A
= 25°C unless otherwise specified)
SHDN Pin Threshold and
Hysteresis
SYNC Pin Threshold
FB Voltage
Frequency Accuracy