LTC3423 LINEAR [Linear Integrated Systems], LTC3423 Datasheet - Page 4

• Manufacturer Part Number: LTC3423
• Description: Low Output Voltage 3MHz Micropower Synchronous Boost Converters
• Manufacturer: LINEAR [Linear Integrated Systems]

LTC3423/LTC3424
TYPICAL PERFOR A CE CHARACTERISTICS
4
1.28
1.27
1.26
1.25
1.24
1.23
1.22
100
90
80
70
60
50
40
30
20
10
0
–55
0.1
Converter Efficiency 1.2V to 1.8V
EA FB Voltage
OPERATION
Burst Mode
–15
1
OUTPUT CURRENT (mA)
TEMPERATURE ( C)
WITH MBRM120T3 SCHOTTKY
300MHz
0.40
0.35
0.30
0.25
0.20
0.15
25
10
–55
PMOS R
V
V
1MHz
OUT
DD
65
= 3.3V
= 1.8V
100
–15
W
3MHz
DS(ON)
TEMPERATURE ( C)
3223/24 G05
3423/24 G08
105
U
1000
25
125
65
2.05
2.00
1.95
1.90
2.10
2.8
3.4
3.2
3.0
2.6
2.4
2.0
2.2
–55
–55
Oscillator Frequency Accuracy
LTC3424 Current Limit
3423/24 G11
105
R
T
= 15k
125
–15
–15
TEMPERATURE ( C)
TEMPERATURE ( C)
25
25
65
65
14
12
10
3423/24 G06
3423/24 G09
105
105
8
6
4
2
0
0.2
Efficiency Loss Without Schottky
vs Frequency
T
A
125
125
= 25 C
0.6
1.0
FREQUENCY (MHz)
1.60
1.50
1.40
1.80
1.75
1.70
1.65
1.55
1.45
0.15
0.10
0.05
0.30
0.25
0.20
1.4
–55
–55
LTC3423 Current Limit
NMOS R
V
V
OUT
DD
1.8
= 3.3V
= 1.8V
–15
–15
2.2
DS(ON)
TEMPERATURE ( C)
TEMPERATURE ( C)
2.6
3423/24 G12
25
25
3.0
65
65
3423/24 G07
3423/24 G10
105
105
34234f
125
125