LTC3458EDE View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC3458EDE Datasheet PDF : 16 Pages
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LTC3458
TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25°C unless otherwise specified)
Frequency Accuracy
1.05
RT = 200k
1.03
1.01
0.99
0.97
0.95
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3458 G07
Maximum Load Current
1200
1000
1.8 to 5.5VIN at 700kHz
RILIM = 124k
5VOUT
800
3.3VOUT
600
7.5VOUT
400
200
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
3458 G10
Efficiency vs Frequency
95
VIN = 3.3V
VOUT = 5V at 100mA
93
91
89
87
85
500
700 900 1100 1300 1500
FREQUENCY (kHz)
3458 G08
SHDN Pin Threshold and
Hysteresis
1.0
0.9
OPERATING
0.8
0.7
SHUTDOWN
0.6
0.5
–45 –30 –15 0 15 30 45 60
TEMPERATURE (°C)
75 90
3458 G11
N-Channel and P-Channel RDS(ON)
0.5
VIN = 3.3V
VOUT = 5V
0.4
P-CHANNEL
0.3
N-CHANNEL
0.2
0.1
0
–40 –15 10
35
60
85
TEMPERATURE (°C)
3458 G09
SYNC Pin Threshold
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
–45 –30 –15 0 15 30 45 60
TEMPERATURE (°C)
75 90
3458 G12
FB Voltage
1.25
1.24
1.23
1.22
1.21
1.20
–45 –30 –15 0 15 30 45 60
TEMPERATURE (°C)
75 90
3458 G13
3458fa
4
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