LTC3401 Linear Technology, LTC3401 Datasheet - Page 4

• Manufacturer Part Number: LTC3401
• Description: 1A/ 3MHz Micropower Synchronous Boost Converter
• Manufacturer: Linear Technology

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