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LTC3458LEDE#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
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
LTC3458L
5
3458lfa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
SW
1V/DIV
I
L
100mA/DIV
SW
1V/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
500ns/DIV
1μs/DIV
500ns/DIV
50μs/DIV
2ms/DIV2μs/DIV
V
IN
= 3.3V
V
OUT
= 5V
L = 7.4μH
V
IN
= 3.3V
V
OUT
= 5V
L = 7.4μH
V
IN
= 2.25V
V
OUT
= 5V
L = 7.4μH
R
ILIM
= 84.5k
V
IN
= 3.3V
V
OUT
= 5V
L = 7.4μH
C
OUT
= 22μF
C
FF
= 22pF*
R
ILIM
= 84.5k
*C
FF
: FEED FORWARD CAPACITOR CONECTED BETWEEN V
OUT
AND FB.
GND
0mA
0mA
0mA
0mA
V
IN
= 3.3V
V
OUT
= 5V
L = 7.4μH
C
OUT
= 22μF
C
FF
= 22pF
R
ILIM
= 84.5k
V
IN
= 3.3V
V
OUT
= 5V
L = 7.4μH
C
SS
= 0.1μF
3458L G14 3458L G15
3458L G16 3458L G17
3458L G18 3458L G19
Fixed Frequency (FF)
Discontinuous Current
Fixed Frequency (FF)
Continuous Current
Over-Current with 2A I
LIMIT
Burst Mode Operation
Burst Mode Operation Close-Up Soft-Start into 20Ω Load
(T
A
= 25°C unless otherwise specified)
LTC3458L
6
3458lfa
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
= 5V
R
T
= 200k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
OUT
= 22μF
R
ILIM
= 110k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015μF
R
BURST
= 133k
R
ILIM
= 110k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015μF
R
BURST
= 133k
R
ILIM
= 110k
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
R
ILIM
= 110k
L = 10μH
F = 1MHz
3458L G20 3458L G21
3458L G22 3458L G23
3458L G24 3458L G25
(T
A
= 25°C unless otherwise specified)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC3458LEDE#TRPBF

Mfr. #:
Buy LTC3458LEDE#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 1.7A, 1.5MHz Synch Boost Converter in DFN
Lifecycle:
New from this manufacturer.
Delivery:
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