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Part Name
Description
LTC3458EDE View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC3458EDE
1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
Linear Technology
LTC3458EDE Datasheet PDF : 16 Pages
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LTC3458
TYPICAL PERFOR A CE CHARACTERISTICS
Sync Operation at 1.33MHz
FF Mode 100-300mA Load Step
SW
5V/DIV
SYNC
2V/DIV
I
L
200mA/DIV
0mA
V
IN
= 3.3V
V
OUT
= 7V
R
OSC
= 200k
500ns/DIV
Burst Mode Operation 10mA to
50mA Load Step
V
OUT
200mV/DIV
BURST
500mV/DIV
LOAD
50mA
10mA
V
OUT
200mV/DIV
COMP
500mV/DIV
I
L
0.5A/DIV
0mA
V
IN
= 3.3V
V
OUT
= 5V
R
Z
= 33K
CC1 = 270pF
CC2 = 10pF
C
OUT
= 22
μ
F
200
μ
s/DIV
L = 10
μ
H
F = 1MHz
Auto Mode 10mA to 100mA Load
Step
V
OUT
200mV/DIV
BURST
1V/DIV
LOAD
100mA
10mA
I
L
200mA/DIV
I
L
200mA/DIV
V
IN
= 3.3V
V
OUT
= 5V
L = 10
μ
H
C
OUT
= 22
μ
F
200
μ
s/DIV
10mA to 200mA Load Step
Showing UV Trip
V
IN
= 3.3V
500
μ
s/DIV
V
OUT
= 5V
L = 10
μ
H
C
BURST
= 0.015
μ
F
R
BURST
= 133k
Forced BURST to FF Mode
Switch with 50mA Load
V
OUT
200mV/DIV
I
L
200mA/DIV
6
– 4%
200
μ
s/DIV
V
IN
= 3.3V
V
OUT
= 5V
L = 10
μ
H
C
BURST
= 0.015
μ
F
R
BURST
= 133k
V
OUT
200mV/DIV
FIXED
FREQUENCY
BURST
I
L
500mA/DIV
200
μ
s/DIV
V
IN
= 3.3V
V
OUT
= 5V
L = 10
μ
H
R
Z
= 33k
CC1 = 270pF
CC2 = 10pF
C
OUT
= 22
μ
F
3458fa
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