Datasheet

4
LTC3402
3402fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Converter Efficiency 1.2V to 3.3V
OUTPUT CURRENT (mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3402 G07
0
1
300kHz
3MHz
1MHz
Burst Mode
OPERATION
OUTPUT CURRENT (mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3402 G08
0
1
300kHz
3MHz
1MHz
Burst Mode
OPERATION
V
IN
(V)
0.8
0
OUTPUT CURRENT (mA)
100
200
300
0.9
1
1.1 1.2
3402 G09
1.3
400
500
1.4
T
A
= 25°C
Converter Efficiency 2.4V to 3.3V
Start-Up Voltage
vs I
OUT
Converter Efficiency 3.6V to 5V
LOAD CURRENT (mA)
0.1
0
EFFICIENCY (%)
10
30
40
50
100
70
3402 G10
20
80
90
60
110
100
1000
1MHz
FIXED
FREQUENCY
Burst Mode OPERATION
V
IN
= 3.6V
Efficiency Loss Without Schottky
vs Frequency
FREQUENCY (MHz)
0.2
8
10
14
1.4 2.2
3402 G11
6
4
0.6 1.0
1.8 2.6 3.0
2
0
12
EFFICIENCY LOSS (%)
T
A
= 25°C
Current Limit
TEMPERATURE (°C)
–55
CURRENT (A)
2.6
2.8
3.0
65
125
3402 G12
2.4
2.2
2.0
–15 25 105
3.2
3.4
(T
A
= 25°C unless otherwise noted)
EA FB Voltage
Oscillator Frequency Accuracy
TEMPERATURE (°C)
–55
VOLTAGE (V)
1.23
1.24
1.25
65
125
3402 G13
1.22
–15 25 105
1.26
1.27
1.28
TEMPERATURE (°C)
–55
FREQUENCY (MHz)
2.00
65
125
3402 G14
1.95
1.90
–15 25 105
2.05
2.10
R
t
= 15k
NMOS R
DS(ON)
TEMPERATURE (°C)
–55
RESISTANCE (Ω)
0.15
65
125
3402 G22
0.10
0.05
–15 25 105
0.20
0.25
0.30
V
OUT
= 3.3V