LTC3539 LINER [Linear Technology], LTC3539 Datasheet - Page 4

• Manufacturer Part Number: LTC3539
• Description: 2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters
• Manufacturer: LINER [Linear Technology]

LTC3539/LTC3539-2
TYPICAL PERFORMANCE CHARACTERISTICS
4
10000
100
1000
90
80
70
60
50
40
30
20
10
100
0
0.1
10
0.1
Effi ciency vs Load Current and
V
0.65
IN
Minimum Load Resistance During
Start-Up vs V
, V
OUT
0.75
1
LOAD CURRENT (mA)
= 5V
EFFICIENCY
0.85
100
90
80
70
60
50
40
30
20
10
IN
0
0.1
V
10
Effi ciency vs Load Current and
V
IN
IN
0.95
POWER LOSS
(V)
, V
OUT
100
1.05
1
EFFICIENCY
LOAD CURRENT (mA)
V
V
V
V
= 1.8V
IN
IN
IN
OUT
= 2.4V
= 3.6V
= 4.2V
= 3.3V
1.15
3539 G03
1000
3539 G06
10
1000
100
10
1
0.1
POWER LOSS
100
V
V
V
IN
IN
IN
60
50
40
30
20
10
100
0
= 1V
= 1.2V
= 1.5V
90
80
70
60
50
40
30
20
10
0
0
Burst Mode Threshold Current vs
V
0.5
3539 G01
IN
No Load Input Current vs V
1000
0.5
and V
1.0
1000
100
10
1
0.1
0.01
1.0
1.5
OUT
INPUT VOLTAGE (V)
1.5
2.0
2.0
V
IN
2.5
2.5
(V)
3.0
3.0
100
V
V
V
V
90
80
70
60
50
40
30
20
10
OUT
OUT
OUT
OUT
3.5
0
V
V
V
V
3.5
0.1
OUT
OUT
OUT
OUT
Effi ciency vs Load Current and
V
IN
= 1.8V
= 2.5V
= 3.3V
= 5V
IN
4.0
= 1.8V
= 2.5V
= 3.3V
= 5V
4.0
(T
, V
3539 G11
A
3539 G04
4.5
OUT
= 25°C unless otherwise noted)
4.5
1
LOAD CURRENT (mA)
= 3.3V
EFFICIENCY
2000
1800
1600
1400
1200
1000
1.10
1.05
1.00
0.95
0.90
0.85
0.80
800
600
400
200
10
0
1.0
0.5
Maximum Output Current vs V
Normalized Current Limit vs V
POWER LOSS
1.0
1.5
100
1.5
2.0
V
V
V
IN
IN
IN
2.0
= 1.2V
= 1.8V
= 3V
2.5
3539 G02
V
1000
2.5
V
OUT
IN
3.0
1000
100
10
1
0.1
(V)
3.0
(V)
3.5
3.5
V
V
V
V
4.0
OUT
OUT
OUT
OUT
4.0
= 1.8V
= 2.5V
= 3.3V
= 5V
4.5
4.5
IN
OUT
3539 G05
3539 G16
3539f
5.0
5.0