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LTC3458EDE#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC3458
4
3458fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
3458 G123458 G11
3458 G13
3458 G07 3458 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
0.4
0.3
0.2
0.1
0
60
3458 G09
–15
10
35
85
V
IN
(V)
MAX LOAD CURRENT (mA)
3458 G10
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
7.5V
OUT
P-CHANNEL
N-CHANNEL
1.8 to 5.5V
IN
at 700kHz
R
ILIM
= 124k
V
IN
= 3.3V
V
OUT
= 5V
V
IN
= 3.3V
V
OUT
= 5V at 100mA
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
LTC3458
5
3458fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
SW
2V/DIV
I
L
100mA/DIV
SW
2V/DIV
SW
5V/DIV
I
L
200mA/DIV
V
OUT
100mV/DIV
I
L
200mA/DIV
SW
5V/DIV
V
OUT
100mV/DIV
I
L
200mA/DIV
SS
200mV/DIV
V
OUT
2V/DIV
2V/DIV
V
IN
I
L
200mA/DIV
SW
2V/DIV
I
L
0.5A/DIV
0mA
200ns/DIV
1μs/DIV
200ns/DIV
50μs/DIV
5ms/DIV2μs/DIV
V
IN
= 3.3V
V
OUT
= 7V
L = 10μH
V
IN
= 3.3V
V
OUT
= 7V
L = 10μH
V
IN
= 3.3V
V
OUT
= 7V
L = 10μH
R
ILIM
= 133k
V
IN
= 3.3V
V
OUT
= 7V
L = 10μH
C
OUT
= 22μF
C
FF
= 22pF
0mA
0mA
0mA
0mA
V
IN
= 3.3V
V
OUT
= 7V
L = 10μH
C
OUT
= 22μF
C
FF
= 22pF
V
IN
= 3.3V
V
OUT
= 7V
L = 10μH
Fixed Frequency (FF)
Discontinuous Current
Fixed Frequency (FF)
Continuous Current
Over-Current with 1.5A I
LIMIT
Burst Mode Operation
Burst Mode Operation Close-Up Soft-Start into 50Ω Load
LTC3458
6
3458fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
FF Mode 100-300mA Load StepSync Operation at 1.33MHz
Burst Mode Operation 10mA to
50mA Load Step
Auto Mode 10mA to 100mA Load
Step
10mA to 200mA Load Step
Showing UV Trip
Forced BURST to FF Mode
Switch with 50mA Load
BURST
1V/DIV
V
OUT
200mV/DIV
LOAD
I
L
200mA/DIV
500μs/DIV
100mA
10mA
V
OUT
200mV/DIV
V
OUT
200mV/DIV
I
L
200mA/DIV
I
L
500mA/DIV
200μs/DIV 200μs/DIV
FIXED
FREQUENCY
BURST
–4%
SW
5V/DIV
SYNC
2V/DIV
I
L
200mA/DIV
500ns/DIV
COMP
500mV/DIV
BURST
500mV/DIV
V
OUT
200mV/DIV
V
OUT
200mV/DIV
LOAD
I
L
200mA/DIV
I
L
0.5A/DIV
200μs/DIV
200μs/DIV
50mA
10mA
V
IN
= 3.3V
V
OUT
= 7V
R
OSC
= 200k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
OUT
= 22μF
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015μF
R
BURST
= 133k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015μF
R
BURST
= 133k
V
IN
= 3.3V
V
OUT
= 5V
R
Z
= 33K
CC1 = 270pF
CC2 = 10pF
C
OUT
= 22μF
0mA
0mA
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
R
Z
= 33k
CC1 = 270pF
CC2 = 10pF
C
OUT
= 22μF
L = 10μH
F = 1MHz
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC3458EDE#PBF

Mfr. #:
Buy LTC3458EDE#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 1.4A, 1.5MHz Sync Boost DC/DC Conv w/ Ou
Lifecycle:
New from this manufacturer.
Delivery:
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