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LTC3401 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3401
Description  1A, 3MHz Micropower Synchronous Boost Converter
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3401 Datasheet(HTML) 4 Page - Linear Technology

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LTC3401
3401fa
Transient Response 50mA to 500mA
TYPICAL PERFOR A CE CHARACTERISTICS
Burst Mode Operation
Burst Mode Operation
VOUT
200mV/DIV
550mA
50mA
IOUT
COUT = 22µF
200
µs/DIV
3401 G04
L = 3.3
µH
fOSC = 1MHz
VOUT
AC
100mV/DIV
VIN = 1.2V
5ms/DIV
3401 G05
VOUT = 3.3V
COUT = 100µF
IOUT = 250µA
MODE/SYNC PIN = HIGH
SW
1V/DIV
VOUT
AC
100mV/DIV
VIN = 1.2V
200
µs/DIV
3401 G06
VOUT = 3.3V
COUT = 100µF
IOUT = 20mA
MODE/SYNC PIN = HIGH
SW
1V/DIV
Converter Efficiency 1.2V to 3.3V
OUTPUT CURRENT (mA)
80
100
60
0
40
20
70
90
50
30
10
0.1
10
100
1000
3401 G07
1
Burst Mode
OPERATION
3MHz
300kHz
1MHz
OUTPUT CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3401 G08
0
1
300kHz
3MHz
1MHz
Burst Mode
OPERATION
VIN (V)
0.8
0
100
200
300
0.9
1
1.1
1.2
3401 G09
1.3
400
500
1.4
TA = 25°C
Converter Efficiency 2.4V to 3.3V
Start-Up Voltage
vs IOUT
LOAD CURRENT (mA)
0.1
0
10
30
40
50
100
70
3401 G10
20
80
90
60
110
100
1000
1MHz
FIXED
FREQUENCY
Burst Mode OPERATION
Converter Efficiency 3.6V to 5V
Efficiency Loss Without Schottky
vs Frequency
FREQUENCY (MHz)
0.2
8
10
14
1.4
2.2
3401 G11
6
4
0.6
1.0
1.8
2.6
3.0
2
0
12
TA = 25°C
Current Limit
TEMPERATURE (
°C)
–55
1.55
1.60
1.65
65
125
3401 G12
1.50
1.45
1.40
–15
25
105
1.70
1.75
1.80



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