LTC3402_15 Datasheet, PDF (4/16 Pages) Linear Technology – 2A, 3MHz Micropower Synchronous Boost Converter

LTC3402
TYPICAL PERFOR A CE CHARACTERISTICS (T_A = 25°C unless otherwise noted)
Converter Efficiency 1.2V to 3.3V
100
90
300kHz
80
Burst Mode
OPERATION
70
60
3MHz
1MHz
50
40
30
20
10
0
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
3402 G07
Start-Up Voltage
vs I_OUT
500
T_A = 25°C
400
300
200
100
0
0.8 0.9
1 1.1 1.2
V_IN (V)
1.3 1.4
3402 G09
EA FB Voltage
1.28
1.27
1.26
1.25
1.24
1.23
1.22
–55
–15
25
65
TEMPERATURE (°C)
105 125
3402 G13
Converter Efficiency 2.4V to 3.3V
100
90
Burst Mode
OPERATION
80
70
300kHz
60
3MHz
1MHz
50
40
30
20
10
0
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
3402 G08
Efficiency Loss Without Schottky
vs Frequency
14
T_A = 25°C
12
10
8
6
4
2
0
0.2 0.6
1.0 1.4 1.8 2.2
FREQUENCY (MHz)
2.6 3.0
3402 G11
Oscillator Frequency Accuracy
2.10
R_t = 15k
2.05
2.00
1.95
1.90
–55
–15
25
65
TEMPERATURE (°C)
105 125
3402 G14
Converter Efficiency 3.6V to 5V
100
Burst Mode OPERATION
90
80
70
1MHz
60
FIXED
FREQUENCY
50
40
30
20
10
V_IN = 3.6V
0
0.1
1
10
100
LOAD CURRENT (mA)
1000
3402 G10
Current Limit
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
–55
–15
25
65
TEMPERATURE (°C)
NMOS R_DS(ON)
0.30
V_OUT = 3.3V
0.25
105 125
3402 G12
0.20
0.15
0.10
0.05
–55
–15
25
65
TEMPERATURE (°C)
105 125
3402 G22
3402fb
4